JPH0158247B2 - - Google Patents
Info
- Publication number
- JPH0158247B2 JPH0158247B2 JP5701288A JP5701288A JPH0158247B2 JP H0158247 B2 JPH0158247 B2 JP H0158247B2 JP 5701288 A JP5701288 A JP 5701288A JP 5701288 A JP5701288 A JP 5701288A JP H0158247 B2 JPH0158247 B2 JP H0158247B2
- Authority
- JP
- Japan
- Prior art keywords
- composition
- iron
- less
- martensite
- chilled
- 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.)
- Expired
Links
- 239000000203 mixture Substances 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 229910001018 Cast iron Inorganic materials 0.000 claims description 12
- 229910000734 martensite Inorganic materials 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 11
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 238000005121 nitriding Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 239000013043 chemical agent Substances 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 238000005496 tempering Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- CDRCPXYWYPYVPY-UHFFFAOYSA-N iron(2+) oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+2].[Fe+2].[Fe+2] CDRCPXYWYPYVPY-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、内燃機関のロツカアーム、タペツト
等のバルブリフターまたはカムシヤフト等におい
て、耐摩耗性、負荷能力その他の機械的性質の向
上を図ることを目的とし、炭化物を晶出した組成
と、機械的性質に富むソルバイト組成とから成
る、耐摩耗性の表面を有する耐摩耗表面鋳鉄を得
ようとするものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention aims to improve the wear resistance, load capacity and other mechanical properties of a valve lifter or camshaft such as a rocker arm or tappet of an internal combustion engine. The present invention aims to obtain a wear-resistant surface cast iron having a wear-resistant surface composed of a carbide crystallized composition and a sorbite composition rich in mechanical properties.
従来技術
近来、自動車等の内燃機関の性能が著しく向上
し、そのためにロツカアーム、タペツト等のバル
ブリフターまたはカムシヤフト等において、耐摩
耗性、負荷能力その他の機械的性質の向上が要求
されて来た。BACKGROUND OF THE INVENTION In recent years, the performance of internal combustion engines for automobiles and the like has significantly improved, and therefore valve lifters such as rocker arms and tappets, camshafts, etc. have been required to have improved wear resistance, load capacity, and other mechanical properties.
従来のチル化したチル鋳鉄では、堅硬度が低く
耐摩耗性も乏しく、また機械的性能に劣る欠点が
あるために、そのチル鋳鉄の組成中に一層硬質の
マルテンサイト組成を形成させることが行なわれ
ている。 Conventional chilled cast iron has low hardness, poor wear resistance, and poor mechanical performance, so it has been difficult to form a harder martensitic composition in the chilled cast iron composition. It is.
発明が解決しようとする問題点
本発明は上述のごとき問題点を解決しようとす
るものであつて、上述のマルテンサイト組成の鋳
鉄では堅硬性には富むが、その強靭性等の機械的
性質に乏しく、繰り返し応力によつて機械的疲労
を生ずる欠点がある。これに対して、ソルバイト
組成は堅硬性に富むと共に、強靭性及び繰り返し
応力による機械的疲労を生じさせない等の機械的
性質に優れたものである。Problems to be Solved by the Invention The present invention attempts to solve the above-mentioned problems. Cast iron with the above-mentioned martensitic composition has high hardness, but has poor mechanical properties such as toughness. It has the disadvantage of being poor and causing mechanical fatigue due to repeated stress. On the other hand, the sorbite composition is rich in hardness and has excellent mechanical properties such as toughness and not causing mechanical fatigue due to repeated stress.
問題点を解決するための手段
本発明は上述のごとき問題点を解決するため、
チル化鋳鉄組織中にソルバイト組成を析出させた
もので、第１の発明は、
炭素 3.0〜4.0wt％
ケイ素 1.5〜2.5wt％
マンガン 0.5〜1.0wt％
リン 0.20wt％以下
イオウ 0.20wt％以下
ニツケル 1.0〜5.0wt％
クロム 0.7〜2.5wt％
モリブデン 0.4〜1.2wt％
バナジウム 0.1〜0.5wt％
鉄 82.0〜92.0wt％
の組成から成る、溶解したフエロ合金銑鉄を鋳型
内に注入し、冷し金によつて、耐摩耗性を必要と
する表面に、多量の炭化物を晶出した組成と、マ
ルテンサイト組成から成るチル化層を形成し、こ
れを500℃〜600℃で焼戻しして、そのマルテンサ
イト組成をソルバイト組成に変成することを特徴
として成るものである。Means for Solving the Problems The present invention solves the above problems by:
The first invention is one in which a sorbite composition is precipitated in a chilled cast iron structure, and the first invention is as follows: Carbon 3.0-4.0wt% Silicon 1.5-2.5wt% Manganese 0.5-1.0wt% Phosphorus 0.20wt% or less Sulfur 0.20wt% or less Nickel Molten ferroalloy pig iron with a composition of 1.0 to 5.0 wt%, chromium 0.7 to 2.5 wt%, molybdenum 0.4 to 1.2 wt%, vanadium 0.1 to 0.5 wt%, and iron 82.0 to 92.0 wt% is poured into a mold and cooled into a metal. Therefore, a chilled layer consisting of a large amount of crystallized carbides and a martensite composition is formed on the surface that requires wear resistance, and this is tempered at 500°C to 600°C to transform the martensite. It is characterized by transforming the composition into a sorbite composition.
また第２の発明は、
炭素 3.0〜4.0wt％
ケイ素 1.5〜2.5wt％
マンガン 0.5〜1.0wt％
リン 0.2wt％以下
イオウ 0.2wt％以下
ニツケル 1.0〜5.0wt％
クロム 0.7〜2.5wt％
モリブデン 0.4〜1.2wt％
バナジウム 0.1〜0.5wt％
鉄 82.0〜92.0wt％
の組成から成る溶解したフエロ合金銑鉄を鋳型内
に注入し、冷し金によつて、耐摩耗性を必要とす
る表面に、多量の炭化物を晶出した組成と、マル
テンサイト組成から成るチル化層を形成し、これ
を500℃〜600℃で焼戻しして、マルテンサイト組
成をソルバイト組成に変成する処理を施した素材
の表面を研磨して、表面の粗さを1μ以下の平滑
面にし、その表面に、窒化炉にて、窒化処理を施
して窒化物層を形成し、更に、その表面に初期潤
滑として、化成薬剤処理または水蒸気雰囲気処理
によつて、四、三酸化鉄の酸化鉄層を形成させる
ことを特徴として成るものである。 The second invention is as follows: Carbon 3.0-4.0wt% Silicon 1.5-2.5wt% Manganese 0.5-1.0wt% Phosphorus 0.2wt% or less Sulfur 0.2wt% or less Nickel 1.0-5.0wt% Chromium 0.7-2.5wt% Molybdenum 0.4- Molten ferroalloy pig iron with a composition of 1.2wt% vanadium, 0.1~0.5wt% iron, and 82.0~92.0wt% iron is injected into a mold, and a large amount is applied to the surface requiring wear resistance by cooling. A chilled layer consisting of a carbide crystallized composition and a martensitic composition is formed, and this is tempered at 500℃ to 600℃, and the surface of the material is polished to transform the martensite composition into a sorbite composition. The surface is made smooth with a roughness of 1μ or less, and the surface is nitrided in a nitriding furnace to form a nitride layer.The surface is then treated with chemical agents or steam as initial lubrication. It is characterized by forming an iron oxide layer of iron tetraoxide and trioxide through atmospheric treatment.
上記方法により、きわめて簡易、確実に多量の
炭化物を晶出した組成とソルバイト組成とを混在
させた耐摩耗の表面を有する鋳鉄を得る事ができ
るものとなる。 By the above method, it is possible to obtain cast iron having a wear-resistant surface in which a composition in which a large amount of carbide crystallized and a sorbite composition are mixed can be obtained very simply and reliably.
実施例
以下本発明の一実施例を図面に於いて説明すれ
ば、前記原素材を図示しない電気炉またはキユー
ポラ等の溶解炉内において溶解し、これを取り鍋
に採り、直ちに第１図に示すごとき砂型１内に湯
道２を通して砂型１の型洞３内に注湯し、凝固さ
せる。EXAMPLE An example of the present invention will be described below with reference to the drawings.The raw material is melted in an electric furnace or a melting furnace such as a cupola (not shown), and then poured into a ladle and immediately shown in FIG. The molten metal is passed through a runner 2 into a sand mold 1 and poured into a mold cavity 3 of the sand mold 1, and solidified.
その場合に、その注湯は型洞３の底部にセツト
した冷し金４によつて急冷却されて凝固すると同
時に、炭素を多量に固溶した炭化物が晶出され
て、その部分の表面がチル化されて、チル化層５
が形成される。この際、他の部分は砂型１の地肌
によつて徐冷却されるので、炭化物の晶出は少な
く、チル化されることがない。その鋳放しのチル
化層５は、その配合材の特性から多量の炭化物を
晶出した組成となり、その他の基地はマルテンサ
イト組成から成つている。 In that case, the poured metal is rapidly cooled and solidified by the chiller 4 set at the bottom of the mold cavity 3, and at the same time, carbide containing a large amount of carbon in solid solution is crystallized, and the surface of that part is Chilled, chilled layer 5
is formed. At this time, other parts are slowly cooled by the surface of the sand mold 1, so that less carbides crystallize and are not chilled. The as-cast chilled layer 5 has a composition in which a large amount of carbide is crystallized due to the characteristics of its compounding material, and the other bases have a martensite composition.
この組成原素材を使用したチル化鋳鉄は、基地
がマルテンサイト組成から成るので、これを直ち
に500℃〜600℃で焼戻しして、ソルバイト組成化
する。 Chilled cast iron using this raw material has a martensitic base, so it is immediately tempered at 500°C to 600°C to create a sorbite composition.
次いで、このチル化鋳鉄の表面を、第３図に示
すごとく研磨して、粗さが1μ以下の平滑面６と
し、これを窒化炉で500℃〜600℃において深さが
30μ以下で窒化して第４図に示すごとく窒化層７
を構成させる。更にこの窒化層７の表面に初期潤
滑として化成薬剤処理または水蒸気雰囲気処理に
よつて、四、三酸化鉄等の酸化鉄層８を第５図に
示すごとく構成して、その製品の処理を完了す
る。 Next, the surface of this chilled cast iron is polished to a smooth surface 6 with a roughness of 1μ or less as shown in Fig. 3, and this is polished in a nitriding furnace at 500°C to 600°C to a depth.
The nitrided layer 7 is formed by nitriding at a thickness of 30μ or less as shown in Fig. 4.
be configured. Furthermore, an iron oxide layer 8 such as iron tetraoxide or trioxide is formed on the surface of this nitrided layer 7 as shown in FIG. 5 by chemical chemical treatment or steam atmosphere treatment for initial lubrication, and the treatment of the product is completed. do.
また、本発明方法に係る鋳鉄の成分組成は、第
１、第２の発明において、炭素が3.0wt％より少
ないとチル化しないし、4.0wt％多いと遊離黒鉛
を生じ材料の強度が弱くなる。またケイ素は、
1.5wt％より少ないと硬度が弱くなるし、2.5wt％
よりも多いと脆い材質となる。またマンガン、リ
ン、イオウは、不可避的に含まれるものである。
またニツケルは1.0wt％より少ないと、硬度が出
ないし5.0wt％より多くなつても硬度が出ないも
のとなる。またクロムは、0.7wt％より少ないと
炭化物の量が少なく柔らかく成るし、2.5wt％よ
りも多いと硬く成りすぎる。また、モリブデン
は、0.4wt％より少ないと、結晶を粗くし靭性が
無くなるし、1.2wt％よりも多いと硬く成りすぎ
加工が困難となる。またバナジウムも、0.1wt％
よりも少ないと結晶を粗くし靭性が無くなるし、
0.5wt％よりも多いと硬く成りすぎ加工が困難と
なる。 Further, in the first and second aspects of the composition of the cast iron according to the method of the present invention, if carbon is less than 3.0 wt%, it will not be chilled, and if it is more than 4.0 wt%, free graphite will be generated and the strength of the material will be weakened. Also, silicon is
If it is less than 1.5wt%, the hardness will be weaker, and 2.5wt%
If the amount is more than that, the material becomes brittle. Furthermore, manganese, phosphorus, and sulfur are unavoidably included.
Also, if nickel is less than 1.0wt%, it will not exhibit hardness, and even if it exceeds 5.0wt%, it will not exhibit hardness. Furthermore, when chromium is less than 0.7wt%, the amount of carbides is small and becomes soft, and when it is more than 2.5wt%, it becomes too hard. Furthermore, if molybdenum is less than 0.4 wt%, the crystals become rough and toughness is lost, and if it is more than 1.2 wt%, it becomes too hard and difficult to process. Vanadium is also 0.1wt%
If it is less than , the crystals will become coarse and toughness will be lost.
If it is more than 0.5wt%, it will become too hard and difficult to process.
発明の効果
本発明は上述のごとく構成したものであるか
ら、多量の炭化物を晶出した組成とソルバイト組
成とから、耐磨耗性の表面を有する耐摩耗表面鋳
鉄が得られ、これの表面に窒化層および酸化鉄層
が構成されることになるので、堅硬、強靭にして
機械的性能に優れた製品となり、ロツカアーム、
タペツト等のバルブリフターまたはカムシヤフト
等において、耐摩耗性、負荷能力その他の機械的
性質の向上を得ることができる。Effects of the Invention Since the present invention is configured as described above, a wear-resistant surface cast iron having a wear-resistant surface is obtained from the composition in which a large amount of carbide is crystallized and the sorbite composition. Since it is composed of a nitride layer and an iron oxide layer, the product is hard, strong, and has excellent mechanical performance.
Improved wear resistance, load capacity and other mechanical properties can be obtained in valve lifters such as tappets or camshafts.
図面は本発明の一実施例を示すものであつて、
第１図は鋳造砂型の断面図、第２図は鋳造砂型内
のチル化層部分の拡大断面図、第３図はチル化層
部分を研磨した状態を示す拡大断面図、第４図は
窒化層形成された状態を示す拡大断面図、第５図
は窒化層の表面に酸化鉄層を形成した状態の拡大
断面図である。
１…砂型、４…冷し金、５…チル化層、６…平
滑面、７…窒化層、８…酸化鉄層。
The drawings show one embodiment of the invention,
Figure 1 is a cross-sectional view of the casting sand mold, Figure 2 is an enlarged cross-sectional view of the chilled layer part in the casting sand mold, Figure 3 is an enlarged cross-sectional view showing the chilled layer part polished, and Figure 4 is the nitrided layer. FIG. 5 is an enlarged cross-sectional view showing the state in which the layers are formed. FIG. 5 is an enlarged cross-sectional view showing the state in which the iron oxide layer is formed on the surface of the nitride layer. 1...Sand mold, 4...Cold metal, 5...Chilled layer, 6...Smooth surface, 7...Nitrided layer, 8...Iron oxide layer.
Claims (1)
に注入し、冷し金によつて、耐摩耗性を必要とす
る表面に、多量の炭化物を晶出した組成と、マル
テンサイト組成から成るチル化層を形成し、これ
を500℃〜600℃で焼戻しして、そのマルテンサイ
ト組成をソルバイト組成に変成することを特徴と
する耐摩耗表面鋳鉄の処理法。 ２ 炭素 3.0〜4.0wt％ ケイ素 1.5〜2.5wt％ マンガン 0.5〜1.0wt％ リン 0.2wt％以下 イオウ 0.2wt％以下 ニツケル 1.0〜5.0wt％ クロム 0.7〜2.5wt％ モリブデン 0.4〜1.2wt％ バナジウム 0.1〜0.5wt％ 鉄 82.0〜92.0wt％ の組成から成る溶解したフエロ合金銑鉄を鋳型内
に注入し、冷し金によつて、耐摩耗性を必要とす
る表面に、多量の炭化物を晶出した組成と、マル
テンサイト組成から成るチル化層を形成し、これ
を500℃〜600℃で焼戻しして、マルテンサイト組
成をソルバイト組成に変成する処理を施した素材
の表面を研磨して、表面の粗さを1μ以下の平滑
面にし、その表面に、窒化炉にて、窒化処理を施
して窒化物層を形成し、更に、その表面に初期潤
滑として、化成薬剤処理または水蒸気雰囲気処理
によつて、四、三酸化鉄の酸化鉄層を形成させる
ことを特徴とする耐摩耗表面鋳鉄の処理法。[Claims] 1 Carbon 3.0-4.0wt% Silicon 1.5-2.5wt% Manganese 0.5-1.0wt% Phosphorus 0.2wt% or less Sulfur 0.2wt% or less Nickel 1.0-5.0wt% Chromium 0.7-2.5wt% Molybdenum 0.4- Molten ferroalloy pig iron with a composition of 1.2wt% vanadium, 0.1~0.5wt% iron, and 82.0~92.0wt% iron is injected into a mold, and a large amount is applied to the surface requiring wear resistance by cooling. A wear-resistant surface characterized by forming a chilled layer consisting of a crystallized carbide composition and a martensite composition, and tempering this at 500°C to 600°C to transform the martensite composition into a sorbite composition. How to treat cast iron. 2 Carbon 3.0-4.0wt% Silicon 1.5-2.5wt% Manganese 0.5-1.0wt% Phosphorus 0.2wt% or less Sulfur 0.2wt% or less Nickel 1.0-5.0wt% Chromium 0.7-2.5wt% Molybdenum 0.4-1.2wt% Vanadium 0.1- Molten ferroalloy pig iron with a composition of 0.5 wt% iron and 82.0 to 92.0 wt% iron was poured into a mold, and a large amount of carbide was crystallized on the surface requiring wear resistance by cooling. Then, a chilled layer consisting of a martensite composition is formed, and this is tempered at 500℃ to 600℃, and the surface of the material is polished to transform the martensite composition into a sorbite composition. A smooth surface with a thickness of 1μ or less is formed, and the surface is nitrided in a nitriding furnace to form a nitride layer.The surface is then treated with a chemical agent or steam atmosphere for initial lubrication. A method for treating cast iron with a wear-resistant surface, which is characterized by forming an iron oxide layer of tetra-iron trioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701288A JPS63317622A (en) | 1988-03-10 | 1988-03-10 | Treatment of cast iron having wear resistant surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701288A JPS63317622A (en) | 1988-03-10 | 1988-03-10 | Treatment of cast iron having wear resistant surface |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10110980A Division JPS5726120A (en) | 1980-07-25 | 1980-07-25 | Treatment of cast iron having abrasion resistant surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63317622A JPS63317622A (en) | 1988-12-26 |
| JPH0158247B2 true JPH0158247B2 (en) | 1989-12-11 |
Family
ID=13043528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5701288A Granted JPS63317622A (en) | 1988-03-10 | 1988-03-10 | Treatment of cast iron having wear resistant surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63317622A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4165857B2 (en) | 2001-09-27 | 2008-10-15 | 本田技研工業株式会社 | Method for producing cast iron member |
| CN112888796A (en) | 2018-10-29 | 2021-06-01 | 日本制铁株式会社 | Nitrided component rough material and nitrided component |
-
1988
- 1988-03-10 JP JP5701288A patent/JPS63317622A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63317622A (en) | 1988-12-26 |
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