CN1014211B - Method for producing roller chain with low-carbon low-alloy steel - Google Patents
Method for producing roller chain with low-carbon low-alloy steelInfo
- Publication number
- CN1014211B CN1014211B CN 88104188 CN88104188A CN1014211B CN 1014211 B CN1014211 B CN 1014211B CN 88104188 CN88104188 CN 88104188 CN 88104188 A CN88104188 A CN 88104188A CN 1014211 B CN1014211 B CN 1014211B
- Authority
- CN
- China
- Prior art keywords
- low
- steel
- chain
- alloy steel
- steel strips
- 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
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a method for using a cold-rolled common low-carbon low-alloy steel strip to produce a high-strength bicycle chain or an industrial roller chain by continuous heating quenching and tempering treatment, which is characterized in that low-carbon low-alloy steel is firstly cold-rolled into steel strips of 0.85 to 1.0mm; then, the steel strips are quenched and tempered by a special strip steel continuous heat treating furnace. The technical schedule comprises the aspects that the quenching temperature is from 870 to 890 DEG C, the heating time is from 2 minutes to 3 minutes, and the steel strips are quenched by oil injection of a press machine; then, the steel strips are tempered, and the tempering temperature is from 200 to 350 DEG C. The tensile strength of the steel strips is as high as 150 to 160 kg/mm <2>. The method has the advantages that the method saves more than 25% of materials and lightens 20% of the total weight of the chain.
Description
The present invention is a kind of with common low carbon low-alloy cold rolled strip, through the novel method of continuous heating quenching, temper production high strength bicycle and industrial roller chain.
Roller chain is bike and the chaindriven major parts of other many industrial equipmentss.It is mainly by interior sheet, outer plate, and interior cover, five portion partss such as roll sleeve and little axle are formed.According to service condition, main destructive part is outer plate or interior sheet.The bike that China produces at present and the chain sheet of industrial small size roller chain mainly are to use the steel band of low alloy steel through cold rolling working hardening, directly are washed into, so its intensity is lower.For the high-quality chain standard that reaches bike (pull-off force 〉=817kg), the thickness of chain sheet all 〉=1.2mm, even reached more than the 1.3mm.The ordinary bicycle chain of selling on the present world market, it is thick that the chain sheet mostly is 1.0mm, but its pull-off force is about 950kg all greater than 817kg as West Germany's product, and taiwan products is about 850kg.The bicycle shift chain that the world market needs in a large number, its chain sheet thickness is 1.0mm.Its production technique of experimental analysis is after adopting the quenching and tempering steel band to be washed into type, to quench with the controlled atmosphere continuous heat treating furnace per sample, and temper is to reach the high strength requirement.
Technology related to the present invention by literature search has Japanese Patent J79032091, and its material of J50126530 is suitable with the present invention, but production method is a carburizing and quenching after the punching, and its technology is different with the present invention.
French Patent FR2482233, Deutsches Reichs-Patent 3161481 is the inventions of saving chain sheet materials, its method is to change chain sheet geometrical shape and stamping and discharging standard.Adopting this invention is clout minimizing after the punching, and recovery rate improves, but the variation of chain gross weight is very little, does not alleviate deadweight substantially.
In recent years, quench after China most bicycle chain factory all continues to use external quenched and tempered steel moulding, the tempered thermal treatment process, but this technology needs special-purpose atmosphere controlled heat treatment furnace, domestic amorphous products still, by external introducing equipment expense costliness, in addition, the quenching and tempering steel band does not have supply channel at bicycle trade.Though, all do not form throughput so present trial production person is many.
The invention reside in and providing a kind of is raw material with the low-carbon low-alloy steel, and the production high strength approaches the chain sheet, not only saves material but also alleviate the novel method of chain deadweight.
The present invention adopts the widely used C of the containing ≈ 0.15～0.25% of bicycle chain industry, the low-carbon low-alloy steel of alloying element≤3% is a raw material, the general chain of earlier cold rolling one-tenth 0.85(with)～the 1.0mm(speed-changing chain with) steel band, adopt then that special-purpose band steel continuous heat treating furnace quenches, low-temperaturetempering is handled.This heat treatment furnace is band steel thermal treatment general-purpose equipment, and its technological process is:
Steel grade: 20MnSi
Heating temperature: 870～890 ℃
Heat-up time: 2～3 minutes or rate of heating 2.8～3.1m/ branch.
The press oil spout is quenched, tempering then, and 200～350 ℃ of steel band intensity of producing through this art breading of tempering temperature are up to 150～160kg/mm
2Directly be washed into the chain sheet, be assembled into chain.
Advantage of the present invention is to improve chain intensity, satisfy the needs of speed-changing chain, alleviate the deadweight of chain, economical with materials, save chain sheet materials more than 25% if produce common chain, make the chain gross weight alleviate 20%, calculate (throughput that is equivalent to a stove) to produce 1,500,000 chains, can save 300 tons of steel, close 600,000 yuan of Renminbi.
Embodiment 1
The thick heating heating quenching of preface mode tempering tension chain
Number degree temperature-time temperature strength pull-off force
200 ℃ of 162 951kg of 1 0.9 870 ℃ of 2.0 press oil spout
Mm quenching kgf/mm
2
2 0.9 880℃ 2.5 〃 350℃ 134 883kg
mm kgf/mm
2
3 0.95 880℃ 3.0 〃 200℃ 160 916kg
mm kgf/mm
2
4 1.0 890℃ 3.0 〃 200℃ 〃 101.0kg
mm
5 1.0 890℃ 3.0 〃 320℃ 138 843kg
mm kgf/mm
2
Claims (1)
1, a kind of usefulness contains C ≈ 0.15～0.25%, the low-carbon low-alloy steel of alloying element＜3% is the production method of the thin Chain link for chain grate of raw material production high strength, it is characterized in that steel band, handle with the quenching of special-purpose band steel continuous heat treating furnace, low-temperaturetempering then the cold rolling one-tenth 0.85-1.0mm of low-carbon low-alloy steel elder generation:
Heating temperature: 870～890 ℃,
Heat-up time: 2～3 minutes (or rate of heating is 2.8～3.1m/ branch),
Press oil spout quenching then, tempering again, tempering temperature is 200～350 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104188 CN1014211B (en) | 1988-07-12 | 1988-07-12 | Method for producing roller chain with low-carbon low-alloy steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104188 CN1014211B (en) | 1988-07-12 | 1988-07-12 | Method for producing roller chain with low-carbon low-alloy steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039265A CN1039265A (en) | 1990-01-31 |
| CN1014211B true CN1014211B (en) | 1991-10-09 |
Family
ID=4832912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104188 Expired CN1014211B (en) | 1988-07-12 | 1988-07-12 | Method for producing roller chain with low-carbon low-alloy steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014211B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0153482B1 (en) * | 1994-08-16 | 1998-11-16 | 코오타니 토모카쭈 | Method for producing a vehicular endless track link |
| CN101121957B (en) * | 2007-09-14 | 2011-03-30 | 南京利民机械有限责任公司 | Link joint strengthening method for bicycle chain under weak carbon potential atmosphere |
| CN101121956B (en) * | 2007-09-14 | 2010-12-08 | 南京利民机械有限责任公司 | Heat treatment method for using common carbon steel Q235 as link joint of bicycle chain |
| CN101649378B (en) * | 2009-09-11 | 2011-04-20 | 中冶南方(武汉)威仕工业炉有限公司 | Method for low-temperature tempering heat treatment by using steel plate continuous heat-treating furnace |
| CN102205482B (en) * | 2011-05-13 | 2013-06-12 | 山东良达发兴圆环链有限公司 | Method for producing round-link chain |
| CN103114196B (en) * | 2013-01-18 | 2015-02-04 | 浙江建宏链传动材料有限公司 | Continuous production technology of chain sleeve material |
| CN103433419B (en) * | 2013-08-06 | 2015-12-09 | 浙江诸暨建设链条制造有限公司 | A kind of processing technology of chain |
| CN106884076A (en) * | 2015-12-16 | 2017-06-23 | 常熟宝升精冲材料有限公司 | A kind of destressing tempering method of SPCC-1B materials |
| CN115261565B (en) * | 2022-06-29 | 2023-11-21 | 河钢股份有限公司 | Heat treatment method suitable for 35MnB steel wear-resistant piece |
-
1988
- 1988-07-12 CN CN 88104188 patent/CN1014211B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039265A (en) | 1990-01-31 |
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |