JP2002294396A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2002294396A5 JP2002294396A5 JP2001105083A JP2001105083A JP2002294396A5 JP 2002294396 A5 JP2002294396 A5 JP 2002294396A5 JP 2001105083 A JP2001105083 A JP 2001105083A JP 2001105083 A JP2001105083 A JP 2001105083A JP 2002294396 A5 JP2002294396 A5 JP 2002294396A5
- Authority
- JP
- Japan
- Prior art keywords
- test piece
- cooling
- value
- nos
- seen
- 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
Images
Description
No.1〜3は本発明例である。試験片の成分組成が同一（Ｓ1値＝3.51）で、試験片の等価直径が同一（Ｄｅｑ＝25mm）の場合は、試験片を冷却する際に用いるＨｅガスの吹き付け圧力によって端面の平坦度が大きく変化することが分かる。つまり、試験片を焼入れする際に、該試験片の芯部温度が少なくともＡｒ3変態点〜600℃の範囲を、3〜25barの範囲内で制御したＨｅガスを用いて冷却すると、Ｋ1値が50以下となるので、熱処理歪が少なく寸法精度の高い部品を提供できることが分かる。 Nos. 1 to 3 are examples of the present invention. In the component composition of the test piece are identical (S 1 value = 3.51), in the case of the equivalent diameter same specimen (Deq = 25 mm), the flatness of the end face by blowing the pressure of He gas used for cooling the test piece It can be seen that changes greatly. That is, when the test piece is quenched, when the core temperature of the test piece is cooled by using He gas controlled at least in the range of the Ar 3 transformation point to 600 ° C. within the range of 3 to 25 bar, the K 1 value is obtained. Is less than or equal to 50, it can be seen that it is possible to provide a component with less heat treatment distortion and high dimensional accuracy.
No.9〜11，15，16，20，21，24，28は本発明例であり、No.32〜34は比較例である。 Nos. 9 to 11, 15, 16, 20, 21, 24 and 28 are examples of the present invention, and Nos. 32 to 34 are comparative examples.
No.9〜11，No.15，16，No.20，21，No.24，No.28から明らかな様に、試験片の等価直径（Ｄｅｑ）と冷却時のガス圧力（Ｐ）が同じであったとしても、部品の鋼種成分（Ｓ1またはＳ2値）によって、Ｋ1またはＫ2値が大きく影響を受けることが分かる。そして、Ｋ1またはＫ2値が50以下であると、軸の曲がりが小さく、熱処理による歪の発生が少ないことが分かる。 As is clear from Nos. 9 to 11, No. 15, 16, No. 20, 21, No. 24 and No. 28, the equivalent diameter (Deq) of the test piece and the gas pressure during cooling (P) are the same. It can be seen that the K 1 or K 2 value is greatly affected by the steel type component (S 1 or S 2 value) of the part. When the K 1 or K 2 value is 50 or less, it can be seen that the bending of the shaft is small and the occurrence of distortion due to the heat treatment is small.
また、No.32〜34を見ると、試験片の形状を同一（Ｄｅｑが20mm）とし、本発明の要件を満たすように冷却時のガス圧力を制御したとしても、部品を形成する鋼材の化学成分組成によって試験片の冷却のされやすさは大きく変化するので、Ｋ1またはＫ2値が50を超える。尚、No.32とNo.33は、ガス圧力が本発明の要件を満足しており、且つＫ1またはＫ2値も50以下であるが、これらの鋼の化学成分組成は本発明の要件を満足していない。従って、この様な鋼は、衝風冷却または放冷でも部品は十分冷却され、熱処理歪を低減することができる。よって、浸炭処理後の冷却に非酸化性のガスを加圧して用いる必要はない。 Looking at No. 32 to No. 34, even if the shape of the test piece is the same (Deq is 20 mm) and the gas pressure at the time of cooling is controlled so as to satisfy the requirements of the present invention, the chemical of the steel material forming the part is Since the easiness of cooling of the test piece varies greatly depending on the component composition, the K 1 or K 2 value exceeds 50. No. 32 and No. 33 have gas pressures satisfying the requirements of the present invention and K 1 or K 2 values of 50 or less, but the chemical composition of these steels is Not satisfied. Therefore, in such a steel, the parts are sufficiently cooled even by the blast cooling or the cooling, and the heat treatment distortion can be reduced. Therefore, it is not necessary to use a non-oxidizing gas under pressure for cooling after carburizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001105083A JP4778626B2 (en) | 2001-04-03 | 2001-04-03 | Manufacturing method of steel parts with low heat treatment strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001105083A JP4778626B2 (en) | 2001-04-03 | 2001-04-03 | Manufacturing method of steel parts with low heat treatment strain |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002294396A JP2002294396A (en) | 2002-10-09 |
| JP2002294396A5 true JP2002294396A5 (en) | 2008-05-15 |
| JP4778626B2 JP4778626B2 (en) | 2011-09-21 |
Family
ID=18957837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001105083A Expired - Fee Related JP4778626B2 (en) | 2001-04-03 | 2001-04-03 | Manufacturing method of steel parts with low heat treatment strain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4778626B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177815A (en) * | 2010-02-26 | 2011-09-15 | Vessel Industrial Co Ltd | Rotary tool bit and method for manufacturing rotary tool bit |
| CN110284071A (en) * | 2019-08-02 | 2019-09-27 | 宜兴市佳信数控科技有限公司 | A kind of rotary kiln super large gear and preparation method thereof |
| JP2022126017A (en) * | 2021-02-18 | 2022-08-30 | 株式会社日立製作所 | Sliding member, method for producing the same, and apparatus for producing the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59123743A (en) * | 1982-12-28 | 1984-07-17 | Kobe Steel Ltd | Carburizing steel producing slight strain due to heat treatment |
| JP2973006B2 (en) * | 1989-02-02 | 1999-11-08 | 本田技研工業株式会社 | Sliding member and manufacturing method thereof |
| JP2614653B2 (en) * | 1989-03-14 | 1997-05-28 | 株式会社神戸製鋼所 | Manufacturing method of carburized parts with little heat treatment distortion |
-
2001
- 2001-04-03 JP JP2001105083A patent/JP4778626B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2442299A1 (en) | Steel and steel tube for high-temperature use | |
| JP2007239060A (en) | Surface hardened ferritic stainless steel sheet | |
| JP2002294396A5 (en) | ||
| JP5273952B2 (en) | Hot forging die and manufacturing method thereof | |
| TW201522662A (en) | Process for the production of articles made of iron-cobalt-molybdenum / tungsten-nitrogen-alloys | |
| KR101696733B1 (en) | Cold-rolled ferritic stainless steel sheet having excellent surface quality and method of manufacturing the same | |
| BRPI0406731A (en) | Very high strength hot rolled steel and strip manufacturing process | |
| JP2010209449A (en) | Stainless steel sheet having excellent shape fixability and workability, method for producing the same and article | |
| Birol | Response to thermal cycling of plasma nitrided hot work tool steel at elevated temperatures | |
| JP2001131688A (en) | Air-hardened low or medium carbon steel for improving heat treatment | |
| JPH1017927A (en) | Production of containing delta-ferrite-austenitic stainless steel | |
| JP3112195B2 (en) | Manufacturing method of polished finish ferritic stainless steel sheet with excellent oxidation resistance | |
| JP2003105502A (en) | Stainless steel for metal gasket having excellent high temperature setting resistance, and metal gasket | |
| JP4799291B2 (en) | Alloy steel and manufacturing method thereof | |
| JP2020056075A (en) | Low thermal expansion alloy | |
| JP5366571B2 (en) | Iron-based alloy surface modification material, iron-based alloy surface modification method, and casting mold | |
| JP3339795B2 (en) | Method for manufacturing linear motion bearing member | |
| JP2008075138A (en) | Method for producing maraging steel material | |
| JP2008088448A (en) | Method for annealing low-carbon steel containing cr | |
| JP2907011B2 (en) | Method for producing nitrided steel member with less heat treatment distortion | |
| JPS60204873A (en) | Knockout pin having high toughness | |
| EP3077553B1 (en) | Precipitation hardening of tantalum coated metals | |
| JPS61177358A (en) | Steel for knockout pin | |
| Wang et al. | Effect of nitrogen on mechanical properties of martensitic stainless steel 0 Cr 13 Ni 4 Mo | |
| KR960023169A (en) | Manufacturing method of austenitic heat resistant steel |