JPH09329541A - Scratching type material surface film strength tester - Google Patents
Scratching type material surface film strength testerInfo
- Publication number
- JPH09329541A JPH09329541A JP18526896A JP18526896A JPH09329541A JP H09329541 A JPH09329541 A JP H09329541A JP 18526896 A JP18526896 A JP 18526896A JP 18526896 A JP18526896 A JP 18526896A JP H09329541 A JPH09329541 A JP H09329541A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- scratching
- film strength
- scratch
- material surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006748 scratching Methods 0.000 title claims abstract description 40
- 230000002393 scratching effect Effects 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims description 23
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 23
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 11
- 239000010452 phosphate Substances 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000003801 milling Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 238000003825 pressing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 239000000344 soap Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 17
- 238000000576 coating method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 238000010273 cold forging Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007739 conversion coating Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012795 verification Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000000573 anti-seizure effect Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【産業上の利用分野】金属材料の表面被覆処理は工業的
に広く利用されており、その方法としては鍍金、合箔、
塗装、化成皮膜などがあげられる。この場合形成された
皮膜が所要の付着強さを満たしているかどうかが問題
で、これを効率よく測定し、皮膜の良否を判定すること
が要求されている。この発明は材料表面の皮膜強さを調
べる試験装置及び、その測定方法に関するものである。[Industrial field of application] The surface coating treatment of metal materials is widely used industrially.
Examples include painting and chemical conversion coatings. In this case, whether or not the formed film satisfies the required adhesion strength is a problem, and it is required to measure this efficiently and judge the quality of the film. The present invention relates to a test device for examining the film strength of a material surface and a measuring method therefor.
【従来の技術】上記のいくつかの表面処理法のうち、化
成皮膜特に燐酸塩皮膜を化学反応によって付着させる方
法は今日、炭素鋼、低合金鋼の冷間鍛造加工において、
潤滑手段として広く用いられている。この皮膜は付着強
さが低いと加工中すぐに剥離して材料表面の潤滑剤キャ
リアとして、又工具と材料の焼き付き防止剤として役に
立たない。しかしこの皮膜の付着強さを簡単に測定する
方法は見あたらず、このため一般に皮膜を付着させる条
件を定めるには実際に多数の鍛造品を加工してみる以外
にないのが現状である。2. Description of the Related Art Among the above-mentioned surface treatment methods, a method of depositing a chemical conversion coating, particularly a phosphate coating, by a chemical reaction is currently used in cold forging of carbon steel and low alloy steel.
Widely used as a lubricating means. If the adhesive strength is low, the film peels off immediately during processing and does not serve as a lubricant carrier on the surface of the material or as an anti-seizure agent for the tool and the material. However, there is no method for easily measuring the adhesion strength of this coating, and therefore, the general condition for determining the conditions for attaching the coating is to actually process a large number of forged products.
【発明が解決しようとする課題】この発明は、上記した
問題点を解消する材料表面の皮膜強さを調べる試験装置
及び、その測定方法を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a test apparatus for examining the film strength of a material surface that solves the above problems, and a measuring method therefor.
【課題を解決するための手段】上記目的を達成するた
め、先の尖った工具にて材料表面を引掻くことで材料表
面に形成された皮膜の付着強さを調べる試験にて引掻時
の垂直力及び接線力を同時に測定可能にするため、Ｎ字
形フレームの２カ所の節部近くにひずみゲージを貼付
し、そのフレームの一端に引掻工具の取り付け部を又、
その他端には回転自由なつかみ部を設けたことにより簡
単で信頼のおける表面皮膜強さを測定する表面皮膜強さ
試験装置及び、その測定方法を提供することを目的とす
る。[Means for Solving the Problems] In order to achieve the above-mentioned object, when a scratch is generated in a test for examining the adhesion strength of a film formed on the material surface by scratching the material surface with a pointed tool. In order to measure the vertical force and the tangential force at the same time, strain gauges are attached near the two nodes of the N-shaped frame, and the scratching tool attachment part is also attached to one end of the frame.
An object of the present invention is to provide a surface film strength tester for measuring the surface film strength which is simple and reliable by providing a grip part which can rotate freely at the other end, and a measuring method therefor.
−構造− 以下図面を参照して説明する。図１で、１はＮ字形フレ
ームを示し、その節部２、３に近いところに凹部分を設
けて、それぞれに抵抗線ひずみゲージ２Ａ、３Ａ、を貼
付し、垂直力Ｎ及び接線力Ｔの２分力を高感度にて同時
に測定できる構造である。このＮ字形フレーム１の一端
には引掻工具取付部４を設け、引掻工具５を組み付け、
又他端部には把手部６を設けられているがこの部分は前
記引掻工具５の接線方向Ｆに引掻きが進行するように回
転自在である。この把手部６は、例えば、竪型フライス
盤のチャックなどに組み付けることも可能な形状とす
る。図４で５は引掻工具の詳細である。この工具の先端
部は材料を引掻きながら工具が移動する進行方向Ｆに対
して側面形状が円弧状をしており、一方正面形状につい
ては略中央部にて稜線５ａを有し、その左方に向かって
は傾斜面５ｂを、更にその右方に向かっては傾斜面５ｃ
を設けてあり、その２つの傾斜面によって刃先に一定の
角度を付けてある。なお、使用する引掻工具の先端形状
は、前記については冷間鍛造の潤滑剤としての燐酸塩皮
膜の付着強度を試験する場合の一例であるがその測定目
的に適応するようにくさび形、円錐形又は、台形などを
選定することになる。図５において、引掻き装置の把手
部６を竪型フライス盤のチャック７に固定し、軟鋼板に
燐酸塩皮膜処理を施し、金属石鹸を塗布した測定試験片
８をテーブル９上に万力等で固定する。この際垂直荷重
が徐々に増加すなわち工具押しつけ力が増加するように
するため、軽い傾斜を付けて固定する。竪フライス盤の
テーブル９を矢印方向Ｆに送り、試験片８の皮膜表面を
引掻くとそのとき生じる垂直力Ｎより求めた反力Ｒと接
線力Ｔを測定する。 −作用− なお、試験の実施に先立ち、引掻工具の垂直押し付け力
Ｎ、接線力Ｔそれぞれの検出用ひずみゲージ２Ａ、３Ａ
が正常に作動するかその比較検定を行う。図６及び、図
７にて、把手部６を万力等１０で固定し、工具先端部に
重りＷを吊し、その検定を行う。図８は垂直力Ｎの荷重
とひずみ量、図９は接線力Ｔとひずみ量の関係であり、
いずれもその出力に対する干渉は少なく、測定精度が極
めて高い結果となっている。次に図１０について説明す
る。前記図５において、竪フライス盤のテーブル９を矢
印方向Ｆに送り、試験片８の皮膜表面を引掻くと、図５
に示すようにそのとき生じる垂直力Ｎより求める反力Ｒ
と接線力Ｔを測定することができる。これらを用いて摩
擦係数に相当する工具と材料間のすべり抵抗の大小を表
す数値、Ｔ／２Ｒが得られる。ひきつづき矢印方向にテ
ーブルを送り、工具押しつけ力を徐々に増加させて測定
を行う。この際、接線力Ｔが急激に上昇する現象を生ず
る。その位置が皮膜破断が起こった場所である。同様の
測定を各種工具形状について行い、得られた皮膜の評価
結果と生産現場の冷間鍛造における皮膜の評価結果を比
較して同様の評価が得られるような工具先端形状に修正
し、適当な形状があればこれを標準工具形状と改定す
る。表１では、燐酸塩皮膜処理された軟鋼板の測定結果
を一例として示されている。ここでは垂直力、接線力を
明確に測定できており、摩擦相当係数を求めることによ
りその結果の検討から皮膜の良否を判定することが出来
る。-Structure- Hereinafter, description will be given with reference to the drawings. In FIG. 1, reference numeral 1 denotes an N-shaped frame, and recesses are provided near the nodes 2 and 3, and resistance wire strain gauges 2A and 3A are attached to each of them, and vertical force N and tangential force T It is a structure that can measure two-component force simultaneously with high sensitivity. A scratching tool mounting portion 4 is provided at one end of the N-shaped frame 1, and a scratching tool 5 is assembled.
Further, a grip portion 6 is provided at the other end, but this portion is rotatable so that scratching proceeds in the tangential direction F of the scratching tool 5. The handle portion 6 has a shape that can be attached to, for example, a chuck of a vertical milling machine. In FIG. 4, 5 is a detail of the scratching tool. The tip portion of this tool has an arcuate side surface shape with respect to the traveling direction F in which the tool moves while scratching the material, while the front shape has a ridge line 5a at the substantially central portion, and on the left side thereof. Toward the right, and further to the right, the slope 5c.
Is provided, and the blade edge is angled at a constant angle by the two inclined surfaces. The tip shape of the scratching tool to be used is an example of the case of testing the adhesive strength of a phosphate coating as a lubricant for cold forging as described above, but a wedge shape or a cone shape is suitable for the purpose of measurement. The shape or trapezoid will be selected. In FIG. 5, the grip portion 6 of the scratching device is fixed to the chuck 7 of the vertical milling machine, the mild steel plate is subjected to the phosphate film treatment, and the measurement test piece 8 coated with metal soap is fixed on the table 9 with a vise or the like. To do. At this time, the vertical load is gradually increased, that is, the tool pressing force is increased, so that the tool is fixed with a slight inclination. When the table 9 of the vertical milling machine is fed in the direction F of the arrow and the coating surface of the test piece 8 is scratched, the reaction force R and the tangential force T obtained from the vertical force N generated at that time are measured. -Operation- Before performing the test, the strain gauges 2A and 3A for detection of the vertical pressing force N and the tangential force T of the scratching tool, respectively.
Operates normally, and the comparison test is performed. 6 and 7, the handle 6 is fixed with a vise 10 and the weight W is hung on the tip of the tool to perform the verification. FIG. 8 shows the relationship between the load of vertical force N and the amount of strain, and FIG. 9 shows the relationship between the tangential force T and the amount of strain.
In both cases, there is little interference with the output, and the measurement accuracy is extremely high. Next, FIG. 10 will be described. In FIG. 5, when the table 9 of the vertical milling machine is fed in the direction of arrow F and the coating surface of the test piece 8 is scratched,
As shown in, the reaction force R obtained from the vertical force N generated at that time
And the tangential force T can be measured. Using these, a numerical value, T / 2R, representing the magnitude of the slip resistance between the tool and the material, which corresponds to the friction coefficient, can be obtained. Continue to feed the table in the direction of the arrow and gradually increase the tool pressing force for measurement. At this time, a phenomenon occurs in which the tangential force T rapidly rises. That position is where the film rupture occurred. The same measurement is performed for various tool shapes, and the evaluation results of the obtained film and the evaluation results of the film in cold forging at the production site are compared, and the tool tip shape is modified so that the same evaluation can be obtained. If there is a shape, it will be revised to the standard tool shape. In Table 1, the measurement results of the mild steel sheet treated with the phosphate coating are shown as an example. Here, the vertical force and the tangential force can be clearly measured, and by determining the coefficient of friction, it is possible to judge the quality of the film from the examination of the results.
【発明の効果】この発明は前記のように、Ｎ字形フレー
ムの２カ所の節部近くにひずみゲージを貼付し、そのフ
レームの一端に引掻工具の取り付け部を又、その他端に
は回転自由なつかみ部を設けた構成とすることにより、
広く生産現場で簡単に操作しやすく、かつきわめて信頼
のおける表面皮膜強さを測定できるなどの効果を有す
る。As described above, according to the present invention, strain gauges are attached near two nodes of an N-shaped frame, a scratching tool mounting portion is provided at one end of the frame, and rotation is freely provided at the other end. By providing a gripping part,
It has the effects of being easy to operate in a wide range of production sites and being able to measure the surface film strength with extremely high reliability.
【図１】 表面皮膜強さ試験装置の側面図。FIG. 1 is a side view of a surface film strength testing device.
【図２】 表面皮膜強さ試験装置の正面図。FIG. 2 is a front view of a surface film strength testing device.
【図３】 表面皮膜強さ試験装置の平面図。FIG. 3 is a plan view of a surface film strength testing device.
【図４】 引掻工具５の詳細図。FIG. 4 is a detailed view of the scratching tool 5.
【図５】 表面皮膜強さ試験装置による引掻方法の一
例。FIG. 5 shows an example of a scratching method using a surface film strength tester.
【図６】 垂直力Ｎ検出ゲージの検定を示した図。FIG. 6 is a diagram showing a test of a vertical force N detection gauge.
【図７】 接線力Ｔ検出ゲージの検定を示した図。FIG. 7 is a diagram showing a test of a tangential force T detection gauge.
【図８】 垂直力Ｎの荷重とひずみ量の関係を示す図。FIG. 8 is a diagram showing the relationship between the load of vertical force N and the amount of strain.
【図９】 接線力Ｔの荷重とひずみ量の関係を示す図。FIG. 9 is a diagram showing the relationship between the load of the tangential force T and the amount of strain.
【図１０】 垂直力Ｎより求める反力Ｒと接線力Ｔの関
係を示す図。FIG. 10 is a diagram showing a relationship between a reaction force R obtained from a vertical force N and a tangential force T.
【表１】 燐酸塩皮膜処理された軟鋼板の摩擦相当係数
の結果。 [Table 1] Results of friction equivalent coefficient of mild steel sheet treated with phosphate coating.
１・・・Ｎ字形フレーム ２、３・・・節部 ２Ａ、３Ａ・・・抵抗線ひずみゲージ ５・・・引掻工
具 ６・・・把手部 ５ａ・・・稜線 ５ｂ、５ｃ・・・傾斜面1 ... N-shaped frame 2, 3 ... Node 2A, 3A ... Resistance wire strain gauge 5 ... Scratching tool 6 ... Handle 5a ... Ridge 5b, 5c ... Inclination surface
【表１】 [Table 1]
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年２月７日[Submission date] February 7, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の詳細な説明[Correction target item name] Detailed description of the invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【発明の詳細な説明】Detailed Description of the Invention
【産業上の利用分野】金属材料の表面被覆処理は工業的
に広く利用されており、その方法としては鍍金、合箔、
塗装、化成皮膜などがあげられる。この場合形成された
皮膜が所要の付着強さを満たしているかどうかが問題
で、これを効率よく測定し、皮膜の良否を判定すること
が要求されている。この発明は材料表面の皮膜強さを調
べる試験装置及び、その測定方法に関するものである。[Industrial field of application] The surface coating treatment of metal materials is widely used industrially.
Examples include painting and chemical conversion coatings. In this case, whether or not the formed film satisfies the required adhesion strength is a problem, and it is required to measure this efficiently and judge the quality of the film. The present invention relates to a test device for examining the film strength of a material surface and a measuring method therefor.
【従来の技術】上記のいくつかの表面処理法のうち、化
成皮膜特に燐酸塩皮膜を化学反応によって付着させる方
法は今日、炭素鋼、低合金鋼の冷間鍛造加工において、
潤滑手段として広く用いられている。この皮膜は付着強
さが低いと加工中すぐに剥離して材料表面の潤滑剤キャ
リアとして、又工具と材料の焼き付き防止剤として役に
立たない。しかしこの皮膜の付着強さを簡単に測定する
方法は見あたらず、このため一般に皮膜を付着させる条
件を定めるには実際に多数の鍛造品を加工してみる以外
にないのが現状である。2. Description of the Related Art Among the above-mentioned surface treatment methods, a method of depositing a chemical conversion coating, particularly a phosphate coating, by a chemical reaction is currently used in cold forging of carbon steel and low alloy steel.
Widely used as a lubricating means. If the adhesive strength is low, the film peels off immediately during processing and does not serve as a lubricant carrier on the surface of the material or as an anti-seizure agent for the tool and the material. However, there is no method for easily measuring the adhesion strength of this coating, and therefore, the general condition for determining the conditions for attaching the coating is to actually process a large number of forged products.
【発明が解決しようとする課題】この発明は、上記の問
題点を解消する材料表面の皮膜強さを調べる試験装置及
び、その測定方法を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a test apparatus for examining the film strength of a material surface that solves the above problems, and a measuring method therefor.
【課題を解決するための手段】上記の目的を達成するた
め、先の尖った工具にて材料表面を引掻くことで材料表
面に形成された皮膜の付着強さを調べる試験にて、引掻
時の垂直力及び接線力を同時に測定可能にするため、Ｎ
字形フレームの２カ所の節部近くにひずみゲージを貼付
し、そのフレームの一端に引掻工具の取り付け部を又、
その他端には回転自由なつかみ部を設けたことにより簡
単で信頼のおける表面皮膜強さを測定する表面皮膜強さ
試験装置及び、その測定方法を提供する。In order to achieve the above object, a scratch is taken in a test for examining the adhesion strength of a film formed on the material surface by scratching the material surface with a pointed tool. In order to measure the vertical force and tangential force at the same time, N
Strain gauges are attached near the two nodes of the character frame, and the scratching tool attachment part is also attached to one end of the frame.
(EN) Provided is a surface film strength tester for measuring the surface film strength which is simple and reliable by providing a grip portion which can freely rotate at the other end, and a measuring method therefor.
【実施例】 −構造− 以下図面を参照して説明する。図１で、１はＮ字形フレ
ームを示し、その節部２、３に近いところに凹部分を設
けて、それぞれに抵抗線ひずみゲージ２Ａ、３Ａ、を貼
付し、垂直力Ｎ及び接線力Ｔの２分力を高感度にて同時
に測定できる構造である。このＮ字形フレーム１の一端
には引掻工具取付部４を設け、引掻工具５を組み付け、
又他端部には把手部６を設けられているがこの部分は前
記引掻工具５の接線方向Ｆに引掻きが進行するように回
転自在である。この把手部６は、例えば、堅型フライス
盤のチャックなどに組み付けることも可能な形状とす
る。図４で５は引掻工具の詳細である。この工具の先端
部は材料を引掻きながら工具が移動する進行方向Ｆに対
して側面形状が円弧状をしており、一方正面形状につい
ては略中央部にて稜線５ａを有し、その左方に向かって
は傾斜面５ｂを、更にその右法に向かっては傾斜面５ｃ
を設けてあり、その２つの傾斜面によって刃先に一定の
角度を付けてある。なお、使用する引掻工具の先端形状
は、前記については冷間鍛造の潤滑剤としての燐酸塩皮
膜の付着強度を試験する場合の一例であるがその測定目
的に適応するようにくさび形、円錐形又は、台形などを
選定することになる。図５において、引掻き装置の把手
部６を堅型フライス盤のチャック７に固定し、軟鋼板に
燐酸塩皮膜処理を施し、金属石鹸を塗布した測定試験片
８をテーブル９上に万力等で固定する。この際垂直荷重
が徐々に増加すなわち工具押しつけ力が増加するように
するため、軽い傾斜を付けて固定する。堅型フライス盤
のテーブル９を矢印方向Ｆに送り、試験片８の皮膜表面
を引掻くとそのとき生じる垂直力Ｎより求めた反力Ｒと
接線力Ｔを測定する。 −作用− なお、試験の実施に先立ち、引掻工具の垂直押し付け力
Ｎ、接線力Ｔそれぞれの検出用ひずみゲージ２Ａ、３Ａ
が正常に作動するかその比較検定を行う。図６及び、図
７にて、把手部６を万力等１０で固定し、工具先端部に
重りＷを吊し、その検定を行う。図８は垂直力Ｎの荷重
とひずみ量、図９は接線力Ｔとひずみ量の関係であり、
いずれもその出力に対する干渉は少なく、測定精度が極
めて高い結果となっている。次に図１０について説明す
る。前記図５において、堅型フライス盤のテーブル９を
矢印方向Ｆに送り、試験片８の皮膜表面を引掻くと、図
５に示すようにそのとき生じる垂直力Ｎより求める反力
Ｒと接線力Ｔを測定することができる。これらを用いて
摩擦係数に相当する工具と材料間のすべり抵抗の大小を
表す数値、Ｔ／２Ｒが得られる。ひきつづき矢印方向に
テーブルを送り、工具押しつけ力を徐々に増加させて測
定を行う。この際、接線力Ｔが急激に上昇する現象を生
ずる。その位置が皮膜破断が起こった場所である。同様
の測定を各種工具形状について行い、得られた皮膜の評
価結果と生産現場の冷間鍛造における皮膜の評価結果を
比較して同様の評価が得られるような工具先端形状に修
正し、適当な形状があればこれを標準工具形状と改定す
る。表１では、燐酸塩皮膜処理された軟鋼板の測定結果
を一例として示されている。ここでは垂直力、接線力を
明確に測定できており、摩擦相当係数を求めることによ
りその結果の検討から皮膜の良否を判定することが出来
る。[Embodiment] -Structure-A description will be given below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an N-shaped frame, which is provided with concave portions near its nodes 2 and 3, and resistance wire strain gauges 2A and 3A are attached to each of them, and vertical force N and tangential force T are applied. It is a structure that can measure two-component force simultaneously with high sensitivity. A scratching tool mounting portion 4 is provided at one end of the N-shaped frame 1, and a scratching tool 5 is assembled.
Further, a grip portion 6 is provided at the other end, but this portion is rotatable so that scratching proceeds in the tangential direction F of the scratching tool 5. The handle portion 6 has a shape that can be attached to, for example, a chuck of a rigid milling machine. In FIG. 4, 5 is a detail of the scratching tool. The tip portion of this tool has an arcuate side surface shape with respect to the traveling direction F in which the tool moves while scratching the material, while the front shape has a ridge line 5a at the substantially central portion and is located on the left side thereof. Toward the right side, and further to the right of the slope 5c.
Is provided, and the blade edge is angled at a constant angle by the two inclined surfaces. The tip shape of the scratching tool used is an example of the case of testing the adhesive strength of a phosphate coating as a lubricant for cold forging as described above. The shape or trapezoid will be selected. In FIG. 5, the grip 6 of the scratching device is fixed to the chuck 7 of the rigid milling machine, the mild steel plate is subjected to the phosphate film treatment, and the measurement test piece 8 coated with metal soap is fixed on the table 9 with a vise or the like. To do. At this time, the vertical load is gradually increased, that is, the tool pressing force is increased, so that the tool is fixed with a slight inclination. When the table 9 of the rigid milling machine is fed in the direction of arrow F and the coating surface of the test piece 8 is scratched, the reaction force R and the tangential force T obtained from the vertical force N generated at that time are measured. -Operation- Before performing the test, the strain gauges 2A and 3A for detection of the vertical pressing force N and the tangential force T of the scratching tool, respectively.
Operates normally, and the comparison test is performed. 6 and 7, the handle 6 is fixed with a vise 10 and the weight W is hung on the tip of the tool to perform the verification. FIG. 8 shows the relationship between the load of vertical force N and the amount of strain, and FIG. 9 shows the relationship between the tangential force T and the amount of strain.
In both cases, there is little interference with the output, and the measurement accuracy is extremely high. Next, FIG. 10 will be described. In FIG. 5, when the table 9 of the rigid milling machine is fed in the direction of arrow F and the coating surface of the test piece 8 is scratched, as shown in FIG. 5, the reaction force R and the tangential force T obtained from the vertical force N generated at that time are obtained. Can be measured. Using these, a numerical value, T / 2R, representing the magnitude of the slip resistance between the tool and the material, which corresponds to the friction coefficient, can be obtained. Continue to feed the table in the direction of the arrow and gradually increase the tool pressing force for measurement. At this time, a phenomenon occurs in which the tangential force T rapidly rises. That position is where the film rupture occurred. The same measurement is performed for various tool shapes, and the evaluation results of the obtained film and the evaluation results of the film in cold forging at the production site are compared, and the tool tip shape is modified so that the same evaluation can be obtained. If there is a shape, it will be revised to the standard tool shape. In Table 1, the measurement results of the mild steel sheet treated with the phosphate coating are shown as an example. Here, the vertical force and the tangential force can be clearly measured, and by determining the coefficient of friction, it is possible to judge the quality of the film from the examination of the results.
【表１】 [Table 1]
【発明の効果】この発明は前記のように、Ｎ字形フレー
ムの２カ所の節部近くにひずみゲージを貼付し、そのフ
レームの一端に引掻工具の取り付け部を又、その他端に
は回転自由なつかみ部を設けた構成とすることにより、
広く生産現場で簡単に操作しやすく、かつきわめて信頼
のおける表面皮膜強さを測定できるなどの効果を有す
る。As described above, according to the present invention, strain gauges are attached near two nodes of an N-shaped frame, a scratching tool mounting portion is provided at one end of the frame, and rotation is freely provided at the other end. By providing a gripping part,
It has the effects of being easy to operate in a wide range of production sites and being able to measure the surface film strength with extremely high reliability.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of drawings]
【図１】 表面皮膜強さ試験装置の側面図FIG. 1 Side view of surface film strength tester
【図２】 表面皮膜強さ試験装置の正面図FIG. 2 is a front view of a surface film strength test device.
【図３】 表面皮膜強さ試験装置の平面図FIG. 3 is a plan view of a surface film strength test device.
【図４】 引掻工具５の詳細図FIG. 4 is a detailed view of the scratching tool 5.
【図５】 表面皮膜強さ試験装置による引掻方法の一
例FIG. 5: An example of a scratching method using a surface film strength tester
【図６】 垂直力Ｎ検出ゲージの検定を示した図FIG. 6 is a diagram showing verification of a vertical force N detection gauge.
【図７】 接線力Ｔ検出ゲージの検定を示した図FIG. 7 is a diagram showing a test of a tangential force T detection gauge.
【図８】 垂直力Ｎの荷重とひずみ量の関係を示す図FIG. 8 is a diagram showing the relationship between the load of vertical force N and the amount of strain.
【図９】 接線力Ｔの荷重とひずみ量の関係を示す図FIG. 9 is a diagram showing the relationship between the load of the tangential force T and the amount of strain.
【図１０】 垂直力Ｎより求める反力Ｒと接線力Ｔの関
係を示す図FIG. 10 is a diagram showing a relationship between a reaction force R obtained from a vertical force N and a tangential force T.
【符号の説明】 １・・・・・・・Ｎ字形フレーム ２、３・・・・・節部 ２Ａ、３Ａ・・・抵抗線ひずみゲージ ５・・・・・・・引掻工具 ５ａ・・・・・・稜線 ５ｂ、５ｃ・・・傾斜面 ６・・・・・・・把手部[Explanation of Codes] 1 ... N-shaped frame 2, 3 ... Nodes 2A, 3A ... Resistance wire strain gauge 5 ... Scratching tool 5a ... .... Ridge lines 5b, 5c ... Slopes 6 ...
Claims (4)
とで材料表面に形成された皮膜の付着強さを調べる試験
にて引掻時の垂直力及び接線力を同時に測定可能にする
ためＮ字形フレームの２カ所の節部近くにひずみゲージ
を貼付し、そのフレームの一端に引っ掻工具の取り付け
部を、又その他端には回転自由なつかみ部を設けたこと
を特徴とする引掻式材料表面皮膜強さ試験装置。1. A vertical force and a tangential force at the time of scratching can be simultaneously measured in a test for examining the adhesion strength of a film formed on the material surface by scratching the material surface with a pointed tool. For this purpose, strain gauges are attached near the two nodes of the N-shaped frame, the scratch tool attachment part is provided at one end of the frame, and the rotatable grip part is provided at the other end. Scratch-type material surface film strength tester.
固定して操作、ないしは手動にて操作が可能であり、あ
るいは各種機械器具の一部として組み込むことにより２
分力測定荷重センサーとなることを特徴とする、引掻式
材料表面皮膜強さ試験装置。2. In the scratch test, the grip portion can be fixed to a machine for operation, or can be manually operated, or by being incorporated as a part of various machine tools.
A scratch type material surface film strength tester, which is a load measuring sensor.
皮膜付着強さを調べる表面皮膜強さ試験装置の引掻工具
においてその先端形状が工具引掻方向から視て、側面形
状が円弧状をし、正面形状が中央部にて稜線を有しま
た、左右方向に向かって一定角度でそれぞれ傾斜面を有
する工具形状をしていることを特徴とする、引掻式材料
表面皮膜強さ試験装置。3. A scratch tool of a surface film strength tester for investigating the film adhesion strength of a cold forged product subjected to a phosphate film treatment, the tip shape of which is a circle when viewed from the tool scratching direction. Scratch-type material surface film strength, characterized by an arc shape, a front shape having a ridgeline at the center, and a tool shape having inclined surfaces at a certain angle in the left-right direction Test equipment.
料表面皮膜強さ試験装置の工具の移動面に対して軽く傾
斜を付けて固定することで皮膜強さを計測することを特
徴とする引掻方法。4. The film strength is measured by slightly fixing the measuring surface of the test piece with respect to the moving surface of the tool of the scratch type material surface film strength testing device according to claim 1, and measuring the film strength. A scratching method characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18526896A JP3528160B2 (en) | 1996-06-11 | 1996-06-11 | Scratch-type material surface film strength test apparatus and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18526896A JP3528160B2 (en) | 1996-06-11 | 1996-06-11 | Scratch-type material surface film strength test apparatus and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09329541A true JPH09329541A (en) | 1997-12-22 |
| JP3528160B2 JP3528160B2 (en) | 2004-05-17 |
Family
ID=16167862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18526896A Expired - Fee Related JP3528160B2 (en) | 1996-06-11 | 1996-06-11 | Scratch-type material surface film strength test apparatus and test method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3528160B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356351A (en) * | 2001-03-30 | 2002-12-13 | Toray Ind Inc | Glass material, display member and display |
| KR100915905B1 (en) * | 2007-07-20 | 2009-09-07 | (주)에이이엠테크 | Automatic Hardness and Wear Resistance Tester |
| JP2012168102A (en) * | 2011-02-16 | 2012-09-06 | Tokyo Institute Of Technology | Scratch testing machine and scratch testing method |
| KR101255794B1 (en) * | 2010-11-19 | 2013-04-17 | 한국건설기술연구원 | Equipment for testing shearing force of secure mesh window for building construction using knife |
| CN115683914A (en) * | 2022-11-11 | 2023-02-03 | 浙江省特种设备科学研究院 | An elevator traction sheave wear performance testing equipment |
-
1996
- 1996-06-11 JP JP18526896A patent/JP3528160B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356351A (en) * | 2001-03-30 | 2002-12-13 | Toray Ind Inc | Glass material, display member and display |
| KR100915905B1 (en) * | 2007-07-20 | 2009-09-07 | (주)에이이엠테크 | Automatic Hardness and Wear Resistance Tester |
| KR101255794B1 (en) * | 2010-11-19 | 2013-04-17 | 한국건설기술연구원 | Equipment for testing shearing force of secure mesh window for building construction using knife |
| JP2012168102A (en) * | 2011-02-16 | 2012-09-06 | Tokyo Institute Of Technology | Scratch testing machine and scratch testing method |
| CN115683914A (en) * | 2022-11-11 | 2023-02-03 | 浙江省特种设备科学研究院 | An elevator traction sheave wear performance testing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3528160B2 (en) | 2004-05-17 |
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