JPS609712A - Ejector pin with favorable toughness and wear-proofness - Google Patents
Ejector pin with favorable toughness and wear-proofnessInfo
- Publication number
- JPS609712A JPS609712A JP11802383A JP11802383A JPS609712A JP S609712 A JPS609712 A JP S609712A JP 11802383 A JP11802383 A JP 11802383A JP 11802383 A JP11802383 A JP 11802383A JP S609712 A JPS609712 A JP S609712A
- Authority
- JP
- Japan
- Prior art keywords
- treatment
- less
- steel
- wear
- age
- 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
- 230000002349 favourable effect Effects 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 8
- 238000003483 aging Methods 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000011282 treatment Methods 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000010137 moulding (plastic) Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 16
- 238000005121 nitriding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
ンに関するものであり、とくに精密プラスチック成形金
型用のφθｑ〜φユθ論の細径の押出ピンに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small diameter extrusion pin of φθq to φyuθ theory for precision plastic molds.
従来，プラスチック成形金型用押出ピンとしては．一般
に８に８２／，８ＫＤ／／などの工具鋼を８１０６０前
後の硬さに焼入・焼もどししたもの。Traditionally, as an extrusion pin for plastic molds. Generally, tool steel such as 8 to 82/, 8KD// is hardened and tempered to a hardness of around 81060.
および中炭素鋼の８ＫＤ Ａ ／全焼入・焼もどし後。and medium carbon steel 8KD A/after full quenching and tempering.
窒化処理をほどこしたものが用いられている。しかし８
Ｋ ８ 、２／、ＳＫＤ／／は靭性が低く，折損事故を
おこすのでφユθ調以下の細径ピンには使用できない。A nitrided material is used. But 8
K8, 2/, and SKD// cannot be used for small diameter pins of φ, θ, or smaller because they have low toughness and may cause breakage.
また８ＫＤ Ａ ／は，ｌ−ＩＲＯ＆ｊ 前後の硬さに
調質後、５０６〜５７０℃で窒化処理をして使用するが
，窒化処理によって膨張するため．細径ビンの直径の寸
法精度を（θ，ーθθθ！； ｔｅｎ ）に高めること
が困難であり，また靭性も若干不足するという欠点があ
った。In addition, 8KD A/ is used after being tempered to a hardness of around l-IRO&j and then nitrided at 506 to 570°C, but it expands due to the nitriding process. It was difficult to increase the dimensional accuracy of the diameter of the small-diameter bottle to (θ, -θθθ!; ten ), and the toughness was also slightly insufficient.
本発明は、これらの問題に鑑みてなされたものであシ、
従来の押出ピンよりも靭性が優れており２しかも耐摩耗
性は同等であって、φθゲ〜φユθ謹の極細の押出ピン
として使用できるものを提供することを目的とするもの
である。The present invention has been made in view of these problems.
The object of the present invention is to provide an extruded pin that is superior in toughness to conventional extruded pins, has the same wear resistance, and can be used as an ultra-fine extruded pin of φθ to φY θ.
すなわち１本発明は重量饅で０θθ３％以下。In other words, the present invention has a weight of 0θθ3% or less.
Ｓｉθ２θチ以下、Ｍｎ０−２θチ以下、Ｎｉ／ｊθ〜
２θθチ、Ｍｏ ｌθ〜コ、７チ、Ａ２θθコ〜θコｊ
％、Ｔｉ１．２θ〜ユθチ、残部鉄および不純物からな
る低炭素マルテンサイト鋼の溶体化処理済の棒材を所定
の形状に加工した後、９７０℃前後の温度で窒化処理を
ほどこして１表面硬化と同時に、内部に時効硬化を生じ
させたことを特徴とする靭性ならびに耐摩耗性の良好な
プラスチ・ツク用押出ピンである。前記の如く構成する
ことにより靭性が非常に良好であると同時に耐摩耗性、
耐焼付性にも優れた性能を有する押出ピンを提供するこ
とができる。また本発明の押出ピンは、窒化処理による
膨張が時効硬化による収縮によって打消されるため１寸
法変化がほとんどなく、細径ビンの直径の寸法精度を高
めることが容易であるという特徴も有する。Siθ2θchi or less, Mn0-2θchi or less, Ni/jθ~
2θθchi, Mo lθ～ko, 7chi, A2θθko～θkoj
%, Ti1.2θ~Yθ, balance iron and impurities. After processing a solution-treated bar of low carbon martensitic steel into a predetermined shape, it is nitrided at a temperature of around 970°C. This is an extruded pin for plastic that has good toughness and wear resistance, and is characterized by surface hardening and internal age hardening. By having the structure as described above, it has very good toughness and at the same time has excellent wear resistance and
It is possible to provide an extrusion pin that also has excellent seizure resistance. Furthermore, the extrusion pin of the present invention has the feature that there is almost no change in one dimension because the expansion caused by the nitriding treatment is canceled out by the contraction caused by age hardening, and it is easy to improve the dimensional accuracy of the diameter of the small diameter bottle.
次に１本発明押出ピンの組成限定理由を述べる。Next, the reasons for limiting the composition of the extrusion pin of the present invention will be described.
Ｃは低炭素マルテンサイトの靭性を害するので。Because C impairs the toughness of low carbon martensite.
６０３％以下とし、 ８ｉおよびＭｎは脱酸効果を有す
るが、６．２％をこえると靭性を低下するので。8i and Mn have a deoxidizing effect, but if they exceed 6.2%, the toughness decreases.
それぞれθ−２％以下とした。Ｎｉはマルテンサイト組
織とするために必要であり、またマルテンサイトを時効
温度まで安定化させるのに必要である。Each was set to θ-2% or less. Ni is necessary to form a martensitic structure, and is also necessary to stabilize martensite up to the aging temperature.
（３）
しかし、／Ｓθ係未満ではその効果少々り、マた２θ係
ヲこえると残留オーステナイトがあられれるので、／フ
θ〜λθθチの範囲が良い。ＭＯはＦｅおよびＮｉと金
属間化合物をつくり１時効処理によって、析出硬化を生
ずるのに必要であるが。(3) However, if the ratio is less than /Sθ, the effect will be less, and if it exceeds 2θ, retained austenite will be formed, so a range of /Fθ to λθθ is preferable. MO is necessary to form intermetallic compounds with Fe and Ni and to cause precipitation hardening after one aging treatment.
／θチ未満ではその効′果少なく、また２７％をこえる
と靭性を低下するので、７０〜２７％に限定した。Ａμ
は脱酸剤として添加し、ま九時効硬化性を改善するもの
で、成分比はθθコ〜θコｊチとし、 Ｔｉは金属間化
合物Ｎ１ａＴｉ’ｅ形成し１時効硬化を生ずるのに必要
で、／、２θ係未満ではその効果少なく、また２、０チ
をこえると靭性を低下する。If it is less than /θ, the effect is small, and if it exceeds 27%, the toughness decreases, so it is limited to 70 to 27%. Aμ
is added as a deoxidizing agent to improve age hardenability, and the component ratio is θθ to θkoj, and Ti is necessary to form an intermetallic compound N1aTi'e and cause age hardening. If the coefficient is less than , /, 2θ, the effect is small, and if it exceeds 2.0, the toughness decreases.
本発明の組成に係る鋼は、溶体化処理すなわち。The steel according to the composition of the invention can be solution treated, i.e.
約ｇ、２θ℃から空冷することによって硬さはｌ−１１
０３θ〜３．２に軟化するため切削加工が容易であり。About g, the hardness is l-11 by air cooling from 2θ℃
Since it softens to 03θ~3.2, it is easy to cut.
（４）
また時効処理すなわち４ｉｇθ℃に３ｈ加熱することに
よって、低炭素マルテンサイト基質に金属間化合物が析
出してＨＲＣ！ｊθ前後に時効硬化するが。(4) Also, by aging treatment, that is, heating at 4igθ℃ for 3 hours, intermetallic compounds are precipitated in the low carbon martensite matrix, resulting in HRC! Age hardening occurs around jθ.
そのまま押出ピンとして使用する場合には耐摩耗性が不
足するので窒化による表面硬化処理をほどこしたもので
ある。一般に鋼は窒化処理によって膨張を示すが１本発
明鋼の場合には窒化温度が時効処理温度に一致し、窒化
による膨張が析出硬化による収縮によって打ち消される
ので１本発明押出ピンは寸法変化がほとんど生じないと
いう長所を有する。If used as an extrusion pin as it is, the wear resistance would be insufficient, so the surface was hardened by nitriding. Generally, steel exhibits expansion due to nitriding treatment, but in the case of the steel of the present invention, the nitriding temperature matches the aging temperature, and the expansion due to nitriding is canceled out by contraction due to precipitation hardening. It has the advantage that it does not occur.
つぎに本発明の効果を実施例によって説明する。Next, the effects of the present invention will be explained using examples.
第１表は本発明押出ピンと従来製押出ビンの化学組成を
示す。また第−表は、第１表に示す化学成分の鋼で製作
したφθに圏の段付押出ピンの耐久試験結果を示したも
のである。記号Ａの本発明押出ピンは、グアθ℃、ｇｈ
のガス窒化処理により。Table 1 shows the chemical compositions of the extrusion pin of the present invention and the conventional extrusion bottle. Table 1 shows the results of durability tests of stepped extrusion pins of φθ made of steel having the chemical composition shown in Table 1. The extrusion pin of the present invention with symbol A has a guar θ°C, gh
by gas nitriding treatment.
表面硬さＨｖｇ９θ、内部硬さＨＲＣｊｏを示した。Surface hardness Hvg9θ and internal hardness HRCjo were shown.
第１表 押出ピン化学成分
第２表 押出ピン耐久試験結果
すなわち、第３表は、ＩＣのパッケージ用プラスチック
の精密金型にて試験した場合、／４θ０θショットおよ
び３；ａθθθショット後の押出ピンの折損の有無を示
したものであり、記号Ａの本発明押出ピンは、ｊθ、θ
θθショット後も折損せず。Table 1 Extrusion pin chemical composition Table 2 Extrusion pin durability test results In other words, Table 3 shows the results of the extrusion pin after /4θ0θ shot and 3;aθθθ shot when tested in a precision mold made of plastic for IC packaging. This shows the presence or absence of breakage, and the extrusion pin of the present invention with symbol A has jθ, θ
No breakage even after θθ shot.
きわめて靭性の優れていることが確認された。また摩耗
についても全く問題はなかった。It was confirmed that the toughness was extremely high. There were also no problems with wear.
以上説明したごとく１本発明押出ビンは、Ｃθθ３チ以
下、Ｓｉｏ、２θチ以下、Ｍｎ （２，２θチ以下、Ｎ
ｉ／ｉθ〜２θθ％、Ｍｏｌθ〜２．７％、ｉθθ２〜
θコ３；ｑ６．Ｔｔｌ、２θ〜：２０％残部鉄および不
純物からなる鋼を所定の形状に加工したのち。As explained above, one extrusion bottle of the present invention has a Cθθ of 3 or less, Sio, 2θ or less, Mn (2, 2θ or less, N
i/iθ~2θθ%, Molθ~2.7%, iθθ2~
θko3;q6. Ttl, 2θ~: After processing steel consisting of 20% balance iron and impurities into a predetermined shape.
′ｌｔ７θ℃前後で数時間ガス窒化処理をほどこしたも
ので、優れた靭性ならびに耐犀耗性をそなえてお）、ま
た窒化処理と時効硬化処理が同時に行わ（７）
れるため５寸法変化がほとんど無く、直径の寸法精度が
非常に高く、φユθ閣以下の極細用押出ピンとして最適
のものである。It is gas nitrided for several hours at around 7θ℃, giving it excellent toughness and corrosion resistance), and because the nitriding and age hardening treatments are performed simultaneously (7), there is almost no dimensional change. The dimensional accuracy of the diameter is extremely high, making it ideal as an extrusion pin for ultra-fine pins smaller than φ Yu θ.
（８）(8)
Claims (1)
ｉθ〜、２．７チ、ｉθθコ〜θコＳチ、’ｒｔ／、２
θ〜ユθチ、残部鉄および不純物からなる低炭素マルテ
ンサイト鋼の溶体化処理済の棒材を所定の形状に加工し
た後、グ２θ℃前後の温度で窒化処理をほどこして１表
面硬化と同時に、内部に時効硬化を生じさせたことを特
徴とする靭性ならびに耐摩耗性の良好なプラスチック用
押出ピン。[Claims] Cθθ3 or less in weight % Si/2 or less θ. Mn0.2! θchi or less, Ni/iθ~, 2θθ%, Mo
iθ～, 2.7chi, iθθko～θkoSchi, 'rt/, 2
After processing a solution-treated bar of low carbon martensitic steel consisting of θ~Yθ, the balance being iron and impurities into a predetermined shape, it is nitrided at a temperature of around 2θ°C to harden the surface. At the same time, this extruded pin for plastics has good toughness and wear resistance, and is characterized by age hardening inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11802383A JPS609712A (en) | 1983-06-29 | 1983-06-29 | Ejector pin with favorable toughness and wear-proofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11802383A JPS609712A (en) | 1983-06-29 | 1983-06-29 | Ejector pin with favorable toughness and wear-proofness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS609712A true JPS609712A (en) | 1985-01-18 |
| JPH0214418B2 JPH0214418B2 (en) | 1990-04-09 |
Family
ID=14726152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11802383A Granted JPS609712A (en) | 1983-06-29 | 1983-06-29 | Ejector pin with favorable toughness and wear-proofness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10125840B2 (en) | 2014-10-17 | 2018-11-13 | Continental Automotive Systems, Inc. | Air spring hybrid piston assembly |
| CN109663906A (en) * | 2017-10-13 | 2019-04-23 | 株式会社沙迪克 | The metal powder material of metal powder lamination appearance |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487326U (en) * | 1990-11-30 | 1992-07-29 | ||
| JPH0491223U (en) * | 1990-12-25 | 1992-08-10 | ||
| JP7306089B2 (en) | 2019-06-17 | 2023-07-11 | 株式会社リコー | Image processing system, imaging system, image processing device, imaging device, and program |
-
1983
- 1983-06-29 JP JP11802383A patent/JPS609712A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10125840B2 (en) | 2014-10-17 | 2018-11-13 | Continental Automotive Systems, Inc. | Air spring hybrid piston assembly |
| CN109663906A (en) * | 2017-10-13 | 2019-04-23 | 株式会社沙迪克 | The metal powder material of metal powder lamination appearance |
| JP2019073752A (en) * | 2017-10-13 | 2019-05-16 | 株式会社ソディック | Metal powder material for metal powder lamination molding |
| US11000894B2 (en) | 2017-10-13 | 2021-05-11 | Sodick Co., Ltd. | Metal powder material for metal powder lamination molding |
| CN109663906B (en) * | 2017-10-13 | 2021-07-16 | 株式会社沙迪克 | Metal powder material for metal powder laminate molding and three-dimensional molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0214418B2 (en) | 1990-04-09 |
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