CN102345072A - High-strength cast steel for coal cutter rocking arm and heat treatment process thereof - Google Patents
High-strength cast steel for coal cutter rocking arm and heat treatment process thereof Download PDFInfo
- Publication number
- CN102345072A CN102345072A CN2011102846995A CN201110284699A CN102345072A CN 102345072 A CN102345072 A CN 102345072A CN 2011102846995 A CN2011102846995 A CN 2011102846995A CN 201110284699 A CN201110284699 A CN 201110284699A CN 102345072 A CN102345072 A CN 102345072A
- Authority
- CN
- China
- Prior art keywords
- foundry goods
- heat treatment
- insulation
- cast steel
- treatment process
- 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.)
- Withdrawn
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a high-strength cast steel for a coal cutter rocking arm and a heat treatment process thereof. The high-strength cast steel comprises the following chemical components in part by weight: 0.30-0.37 part of C, 0.45-0.60 part of Si, 0.90-1.10 part of Mn, 1.40-1.60 part of Cr, 1.40-1.60 parts of Ni, 0.20-0.30 part of Mo, not more than 0.020 part of P and not more than 0.020 part of S. The heat treatment process of the high-strength cast steel for the coal cutter rocking arm comprises the steps of: carrying out diffusion annealing at 1,040-1,060 DEG C; and then sequentially carrying out normalizing at 890-910 DEG C and tempering at 590-610 DEG C. In the invention, because the technical scheme is adopted, the mechanical property of the product is improved, meanwhile the wearing resistance is favorable, the surface rigidity reaches HB260-285, the surface wearing capability is improved, the service life of the product is prolonged, the deformation in the use process is reduced, and the operation reliability of a device is enhanced.
Description
Technical field
The present invention relates to the rocker arm of coal mining machine high-strength cast steel, and thermal treatment process.
Background technology
Rocker arm of coal mining machine adopts ZG270-500, ZG30Mn2 and ZG25MnNi cast steel more at present, and tensile strength of mechanical property is not high, is generally 550MPa, thereby easy deformation influences inner transmission in the use, influences the works better of coalcutter; And its wear resistance is not enough, and surface hardness HB～170 are caused wearing and tearing easily and influenced works better.
Summary of the invention
The object of the present invention is to provide the rocker arm of coal mining machine high-strength cast steel, it is characterized in that: the chemical ingredients that comprises following mass parts:
C：0.30～0.37；
Si：0.45～0.60；
Mn：0.90～1.10；
Cr：1.40～1.60；
Ni：1.40～1.60；
Mo：0.20～0.30；
P≤0.020；
S≤0.020。
Be used for the thermal treatment process of above-mentioned rocker arm of coal mining machine, it is characterized in that: carry out 1040～1060 ℃ " diffusion annealing " earlier, carry out 890～910 ℃ " normalizing " and 590～610 ℃ " tempering " more successively with high-strength cast steel.
Further, " diffusion annealing " technology is warmed up to 1040～1060 ℃ for to heat up with 110～130 ℃ of speed hourly; Press the wall thickness of foundry goods, per 20～30mm insulation was incubated in 2.5～3.5 hours, after waiting to be incubated completion; Stop heating, foundry goods is at the heat treatment furnace internal cooling.
Further; Said " normalizing and tempering " technology is for to heat up with 110～130 ℃ of speed hourly; Be warmed up to 890～910 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 1.5～2.5 hours; After treating that insulation is accomplished, open fire door, foundry goods is pulled out in heat treatment furnace; Carry out air cooling; To be cooledly again foundry goods is put into heat treatment furnace, be warmed up to 590～610 ℃ again to 190～210 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 1～2 hour; After treating that insulation is accomplished, stop heating, make foundry goods at the heat treatment furnace internal cooling.
The present invention makes product mechanics tensile strength reach 804～902Mpa owing to adopted technique scheme, has improved the mechanical property of product, and wear resistance is good simultaneously, and surface hardness reaches HB260～285, increases the surface abrasion resistance ability; And improve product work-ing life, reduce the distortion of use, increase the equipment serviceability.Technology of the present invention is easy, and cost is low, remarkable in economical benefits.
Embodiment
The invention discloses the rocker arm of coal mining machine high-strength cast steel, comprise the chemical ingredients of following mass parts: C:0.30～0.37; Si:0.45～0.60; Mn:0.90～1.10; Cr:1.40～1.60; Ni:1.40～1.60; Mo:0.20～0.30; P≤0.020; S≤0.020.
Be used for the thermal treatment process of above-mentioned rocker arm of coal mining machine, carry out 1040～1060 ℃ " diffusion annealing " earlier, carry out 890～910 ℃ " normalizing " and 590～610 ℃ " tempering " more successively with high-strength cast steel.
" diffusion annealing " technology is warmed up to 1040～1060 ℃ for to heat up with 110～130 ℃ of speed hourly, presses the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 2.5～3.5 hours; After treating that insulation is accomplished, stop heating, foundry goods is at the heat treatment furnace internal cooling." normalizing and tempering " technology is for to heat up with 110～130 ℃ of speed hourly; Be warmed up to 890～910 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 1.5～2.5 hours; After treating that insulation is accomplished; Open fire door; Foundry goods is pulled out in heat treatment furnace, carry out air cooling, to be cooled to 190～210 ℃; Again foundry goods is put into heat treatment furnace; Again be warmed up to 590～610 ℃, be incubated in 1～2 hour, after waiting to be incubated completion by the wall thickness of foundry goods, per 20～30mm insulation; Stop heating, make foundry goods at the heat treatment furnace internal cooling.
Only be specific embodiment of the present invention below, but technical characterictic of the present invention is not limited thereto.Any is the basis with the present invention, for realizing essentially identical technique effect, has done the ground simple change, has been equal to replacement or modification etc., all is covered by among protection scope of the present invention.
Claims (4)
1. rocker arm of coal mining machine high-strength cast steel is characterized in that: the chemical ingredients that comprises following mass parts:
C：0.30～0.37；
Si：0.45～0.60；
Mn：0.90～1.10；
Cr：1.40～1.60；
Ni：1.40～1.60；
Mo：0.20～0.30；
P≤0.020；
S≤0.020。
2. be used for the thermal treatment process of the described rocker arm of coal mining machine of claim 1, it is characterized in that: carry out 1040～1060 ℃ " diffusion annealing " earlier, carry out 890～910 ℃ " normalizing " and 590～610 ℃ " tempering " more successively with high-strength cast steel.
3. thermal treatment process according to claim 2; It is characterized in that: said " diffusion annealing " technology is for to heat up with 110～130 ℃ of speed hourly; Be warmed up to 1040～1060 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 2.5～3.5 hours; After treating that insulation is accomplished, stop heating, foundry goods is at the heat treatment furnace internal cooling.
4. thermal treatment process according to claim 2; It is characterized in that: said " normalizing and tempering " technology is for to heat up with 110～130 ℃ of speed hourly; Be warmed up to 890～910 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 1.5～2.5 hours; After treating that insulation is accomplished, open fire door, foundry goods is pulled out in heat treatment furnace; Carry out air cooling; To be cooledly again foundry goods is put into heat treatment furnace, be warmed up to 590～610 ℃ again to 190～210 ℃; Press the wall thickness of foundry goods; Per 20～30mm insulation was incubated in 1～2 hour; After treating that insulation is accomplished, stop heating, make foundry goods at the heat treatment furnace internal cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102846995A CN102345072A (en) | 2011-09-22 | 2011-09-22 | High-strength cast steel for coal cutter rocking arm and heat treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102846995A CN102345072A (en) | 2011-09-22 | 2011-09-22 | High-strength cast steel for coal cutter rocking arm and heat treatment process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345072A true CN102345072A (en) | 2012-02-08 |
Family
ID=45544142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102846995A Withdrawn CN102345072A (en) | 2011-09-22 | 2011-09-22 | High-strength cast steel for coal cutter rocking arm and heat treatment process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102345072A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014528A (en) * | 2012-12-10 | 2013-04-03 | 张家港市鼎力铸钢有限公司 | High-strength cast steel |
| CN105008554A (en) * | 2012-11-14 | 2015-10-28 | 电子冶金股份有限公司 | Method for the production of high-wear-resistance martensitic cast steel and steel with said characteristics |
| CN105112784A (en) * | 2015-09-16 | 2015-12-02 | 常熟天地煤机装备有限公司 | Method for machining low-temperature traveling cases of coal cutters |
| CN105154780A (en) * | 2015-08-24 | 2015-12-16 | 洛阳洛北重工机械有限公司 | Formula and heat treatment process for high strength and high weldability steel casting |
| CN105420454A (en) * | 2015-12-15 | 2016-03-23 | 共享铸钢有限公司 | Heat treatment method for large heat-resisting high alloy steel castings |
| CN105506452A (en) * | 2015-12-10 | 2016-04-20 | 湖州中联机械制造有限公司 | New material of high-strength coal mining machine rocker arm and thermal treatment technology of new material |
| CN105537533A (en) * | 2015-12-10 | 2016-05-04 | 湖州中联机械制造有限公司 | Casting process of rocking arm of coal mining machine |
| CN106636598A (en) * | 2016-11-30 | 2017-05-10 | 共享铸钢有限公司 | Anti-deformation process for large low-strength conical ring-shaped plate type steel casting |
| CN107119176A (en) * | 2017-04-20 | 2017-09-01 | 共享铸钢有限公司 | Improve the heat treatment method and steel-casting of steel-casting mechanical property |
| CN111394548A (en) * | 2020-04-18 | 2020-07-10 | 天地科技股份有限公司上海分公司 | Preparation method of large shell of coal mining machine |
| CN111534667A (en) * | 2020-05-18 | 2020-08-14 | 杭州汽轮铸锻有限公司 | Vanadium steel casting treatment method |
-
2011
- 2011-09-22 CN CN2011102846995A patent/CN102345072A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105008554A (en) * | 2012-11-14 | 2015-10-28 | 电子冶金股份有限公司 | Method for the production of high-wear-resistance martensitic cast steel and steel with said characteristics |
| CN103014528A (en) * | 2012-12-10 | 2013-04-03 | 张家港市鼎力铸钢有限公司 | High-strength cast steel |
| CN105154780A (en) * | 2015-08-24 | 2015-12-16 | 洛阳洛北重工机械有限公司 | Formula and heat treatment process for high strength and high weldability steel casting |
| CN105112784A (en) * | 2015-09-16 | 2015-12-02 | 常熟天地煤机装备有限公司 | Method for machining low-temperature traveling cases of coal cutters |
| CN105112784B (en) * | 2015-09-16 | 2017-05-03 | 常熟天地煤机装备有限公司 | Method for machining low-temperature traveling cases of coal cutters |
| CN105537533A (en) * | 2015-12-10 | 2016-05-04 | 湖州中联机械制造有限公司 | Casting process of rocking arm of coal mining machine |
| CN105506452A (en) * | 2015-12-10 | 2016-04-20 | 湖州中联机械制造有限公司 | New material of high-strength coal mining machine rocker arm and thermal treatment technology of new material |
| CN105420454A (en) * | 2015-12-15 | 2016-03-23 | 共享铸钢有限公司 | Heat treatment method for large heat-resisting high alloy steel castings |
| CN106636598A (en) * | 2016-11-30 | 2017-05-10 | 共享铸钢有限公司 | Anti-deformation process for large low-strength conical ring-shaped plate type steel casting |
| CN106636598B (en) * | 2016-11-30 | 2018-09-18 | 共享铸钢有限公司 | A kind of anti-deformation process of large size low-intensity conical ring plate class steel-casting |
| CN107119176A (en) * | 2017-04-20 | 2017-09-01 | 共享铸钢有限公司 | Improve the heat treatment method and steel-casting of steel-casting mechanical property |
| CN111394548A (en) * | 2020-04-18 | 2020-07-10 | 天地科技股份有限公司上海分公司 | Preparation method of large shell of coal mining machine |
| CN111394548B (en) * | 2020-04-18 | 2024-01-30 | 天地科技股份有限公司上海分公司 | Preparation method of large shell of coal mining machine |
| CN111534667A (en) * | 2020-05-18 | 2020-08-14 | 杭州汽轮铸锻有限公司 | Vanadium steel casting treatment method |
| CN111534667B (en) * | 2020-05-18 | 2022-01-18 | 杭州汽轮铸锻有限公司 | Vanadium steel casting treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102345072A (en) | High-strength cast steel for coal cutter rocking arm and heat treatment process thereof | |
| CN102363859B (en) | Method for producing wear-resisting steel plate | |
| CN101403032B (en) | Thermal treatment process for quick cutting steel composite roll | |
| CN104988435B (en) | Low-carbon high-tenacity super-thick steel plate and manufacturing method thereof | |
| CN102146547B (en) | Alloy steel roller and manufacturing process thereof | |
| UA101743C2 (en) | method for producing seamless pipes (Variants) | |
| MX2011013403A (en) | Method for producing a hot press cured component, use of a steel product for producing a hot press cured component, and hot press cured component. | |
| CN101691640A (en) | High strength low alloy wear resistance steel plate and preparation method thereof | |
| CN101880828B (en) | Preparation method of low-alloy manganese martensite wear resistant cast steel | |
| CN102011047A (en) | Production method of steel plate for pressure vessel with low cost and high performance | |
| CN103882344A (en) | Vanadium, chromium and molybdenum added steel plate and production method thereof | |
| CN106119731B (en) | A kind of gas turbine blower blade Steel material and preparation method thereof | |
| CN101948987A (en) | High-strength and high-toughness steel plate and manufacturing method thereof | |
| CN104762559A (en) | Method for producing steel plate for hydrogen-contacting equipment | |
| CN102094112B (en) | Heat treatment process of alloy steel product | |
| CN102703822A (en) | Preparation method of high-speed steel for composite roll collar | |
| CN103334064B (en) | Low yield ratio chromium-molybdenum steel plate and production method thereof | |
| CN101864546A (en) | High heat-resistance abrasion-resistance alloy roller | |
| CN103320721A (en) | Chrome-molybdenum steel plate requiring to keep yield and strength lower limits under thickness stretching and high stretching and production method thereof | |
| CN104532147A (en) | S460G2+QT steel plate for fixed offshore platform and production method of steel plate | |
| CN103498103A (en) | High-hardenability big-diameter 65MnCr grinding ball and preparation method thereof | |
| CN103510005A (en) | Method for manufacturing middle-grade cold-rolled non-oriented electrical steel | |
| CN104561817B (en) | A kind of high chrome backing roll and preparation method | |
| CN102383050A (en) | Cr-Ni based high temperature-resistant oxyaustenitic heat-resistant steel bar and preparation method thereof | |
| CN102321852B (en) | Nanostructure carbide-free bainite medium-carbon alloy steel and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20120208 |