CN85109476A - Technology for forging and rolling steel ball of high wear resistence and low manganese content - Google Patents
Technology for forging and rolling steel ball of high wear resistence and low manganese content Download PDFInfo
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- CN85109476A CN85109476A CN85109476.7A CN85109476A CN85109476A CN 85109476 A CN85109476 A CN 85109476A CN 85109476 A CN85109476 A CN 85109476A CN 85109476 A CN85109476 A CN 85109476A
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- steel ball
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- low manganese
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Abstract
The ball mill that the present invention is applied to thermal power plant, coal, metallurgical mine, manufacture of cement factory grinds the usefulness of raw material.
Forging and rolling steel ball of high wear resistence and low manganese content adopts a spot of manganeisen element, promptly enters roller-type quenching tank behind shaped steel blanking, the forging of heating loose tool or the roll forming and utilizes immediate quenching, no longer the technology of post bake tempering.The wear resistance of steel ball and impact flexibility coupling rationally makes that the metal material consumption of producing the ton product descends significantly, abrasive forces obviously improves, equipment overhaul cycle prolongs, power consumption reduces, cost reduces.
Description
The ball mill that this steel ball is applied to thermal power plant, coal, metallurgical mine, manufacture of cement factory grinds the usefulness of raw material.
The factory and the kind of producing steel ball at present are a lot of, but hardness impact flexibility is ... 0.2 kilogram-metre/square centimeter.Hardness HRC30～45.Compare low 4～8 times of wear resistance with forging and rolling steel ball of high wear resistence and low manganese content.
Forging and rolling steel ball of high wear resistence and low manganese content has adopted a spot of manganeisen element, shaped steel blanking heating loose tool forging or roll forming had both been gone into roller-type quenching tank and had been utilized immediate quenching, the technology of post bake tempering no longer, the wear resistance of steel ball and impact, both mate rationally, and obtaining working condition needs optimum state.The metal material consumption of producing the ton product is descended significantly, and pulverizer adequacy obviously improves, and equipment is looked into and repaiied cycle stretch-out, and power consumption reduces, and cost reduces.
Forging and rolling steel ball of high wear resistence and low manganese content adopts C0.4～0.52%, Mn0.9～2.0%, Si0.17～0.37%, and the spiegeleisen forging of S=0.045%, P=0.05 is made (rolling) and made immediate quenching, not tempering.
The hardness (HRC) 61 ± 4 of low manganese forged steel ball, impact flexibility (α K)=0.5 kilogram-metre/square centimeter.Reaching steel ball operating mode technical conditions in ball mill is best requirements.Because suitable hot-working character and grain growth and the tearing tendency that has improved low manganese forged steel ball of carbon manganese realized not having fragmentation, solved broken problem.
Utilize forged hardening, the processing method of tempering has no longer been given full play to the potentiality of material, hardens, through hardening, and its hardness reaches HRC61 ± 4, greater than 20 millimeters, and saved for the second time heat, quenching, tempering three process.
Roller-type quenching tank (seeing Fig. 1, Fig. 2 for details) is adopted in the quenching of forging and rolling steel ball of high wear resistence and low manganese content
Cooling medium adopts recirculated water to enter cooling medium groove (3) by cooling water pipe (4), water temperature control 30 ± 10, and the hot water after the work is discharged by cooling outlet pipe (5).Cooling medium groove (3) is made with steel plate, and spin quenching tank (6) adopts 1/2 steel tube bending and the cooling medium groove of φ 159 to be welded as a whole.Forge the back ball and roll into the hole by steel ball and enter and roll out door (2) from steel ball after quenching spin groove (6) uniform hardening and fall into storage ball bucket, wait to store some and hang out quality inspection by lifting guider (8) by lifting appliance.The usefulness of storage ball bucket (9) bottom hole sluicing.Sewage after the quenching (10) discharging.
Ball enters back rolling cooling, and uniform quenching does not exist soft spots, film, has solved the mistake circle problem.
Adopt the low manganese forged steel ball of high abrasion to prolong the sieve ball cycle, can move 25000～30000 hours, than about 10 times of the sieve ball cycle stretch-out of China's " power industry technologies laws and regulations on the management " 3-2-25 bar regulation.
Adopt low manganese forged steel ball to make the iron powder that enters burner hearth reduce nearly 4 times, descend 41.27% when the lime-ash iron-holder is used plain ball than in the past, improved ash melting point, reduced blowing out and beaten burnt number of times, help boiler operatiopn, reduced boiler coke, benefit safety in production.
Tsing-Hua University, Dalian Polytechnic College carry out the failure analysis contrast test to forging and rolling steel ball of high wear resistence and low manganese content in the laboratory, its conclusion is: basic mechanical performance, it is the highest that every index all reaches, combination property is best, because lath martensite even tissue, hardness is the highest, does not take place to select wearing and tearing, so have best wearability.
Claims (2)
1, the steel ball that is rolled into by phosphorus content 0.40～0.52%, manganese content 0.9～2.0%, silicon content 0.17～0.37%, sulfur content 0.045%, phosphorous 0.05% spiegeleisen forging of a kind of its chemical composition, it is characterized in that described steel ball is to adopt loose tool to forge or rolling forming, the technology of not tempering of immediate quenching is made.
2, a kind of low manganess steel ball forging rolling technology as claimed in claim 1 is characterized in that described immediate quenching adopts roller-type quenching tank to carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109476.7A CN1003309B (en) | 1985-12-30 | 1985-12-30 | Roller type quenching tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109476.7A CN1003309B (en) | 1985-12-30 | 1985-12-30 | Roller type quenching tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109476A true CN85109476A (en) | 1987-04-22 |
| CN1003309B CN1003309B (en) | 1989-02-15 |
Family
ID=4796352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85109476.7A Expired CN1003309B (en) | 1985-12-30 | 1985-12-30 | Roller type quenching tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003309B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400945A (en) * | 2015-12-17 | 2016-03-16 | 北京科技大学 | Thermal treatment system for large-diameter skew rolling ball-milling steel balls |
| CN110283970A (en) * | 2019-06-19 | 2019-09-27 | 江阴市凯信模锻有限公司 | It is a kind of bias forging shaft residual forging heat utilize device and its application method |
| CN110951964A (en) * | 2019-12-19 | 2020-04-03 | 北京科技大学 | Skew rolling ball-milling steel ball heat treatment system capable of realizing waste heat utilization |
| CN114085981A (en) * | 2021-11-05 | 2022-02-25 | 黄磊 | Stainless steel ball heat treatment equipment based on gravity conveying |
| CN114292986A (en) * | 2022-01-19 | 2022-04-08 | 孙金华 | Wear-resistant steel ball temperature control tempering container |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049692C (en) * | 1997-12-26 | 2000-02-23 | 清华大学 | Method for extracting mixed rare earth oxide by salmiac roasting black weathering slime |
-
1985
- 1985-12-30 CN CN85109476.7A patent/CN1003309B/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400945A (en) * | 2015-12-17 | 2016-03-16 | 北京科技大学 | Thermal treatment system for large-diameter skew rolling ball-milling steel balls |
| CN110283970A (en) * | 2019-06-19 | 2019-09-27 | 江阴市凯信模锻有限公司 | It is a kind of bias forging shaft residual forging heat utilize device and its application method |
| CN110283970B (en) * | 2019-06-19 | 2020-11-13 | 江阴市凯信模锻有限公司 | Forging waste heat utilization device of eccentric shaft forging and use method thereof |
| CN110951964A (en) * | 2019-12-19 | 2020-04-03 | 北京科技大学 | Skew rolling ball-milling steel ball heat treatment system capable of realizing waste heat utilization |
| CN110951964B (en) * | 2019-12-19 | 2021-05-18 | 北京科技大学 | Skew rolling ball-milling steel ball heat treatment system capable of realizing waste heat utilization |
| CN114085981A (en) * | 2021-11-05 | 2022-02-25 | 黄磊 | Stainless steel ball heat treatment equipment based on gravity conveying |
| CN114085981B (en) * | 2021-11-05 | 2023-09-29 | 郭金福 | Stainless steel ball heat treatment equipment based on gravity conveying |
| CN114292986A (en) * | 2022-01-19 | 2022-04-08 | 孙金华 | Wear-resistant steel ball temperature control tempering container |
| CN114292986B (en) * | 2022-01-19 | 2023-09-08 | 郭金福 | Temperature-control tempering container for wear-resistant steel balls |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1003309B (en) | 1989-02-15 |
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