CN104841842A - Forging process of multi-crank crankshaft - Google Patents
Forging process of multi-crank crankshaft Download PDFInfo
- Publication number
- CN104841842A CN104841842A CN201510261827.2A CN201510261827A CN104841842A CN 104841842 A CN104841842 A CN 104841842A CN 201510261827 A CN201510261827 A CN 201510261827A CN 104841842 A CN104841842 A CN 104841842A
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- China
- Prior art keywords
- fire
- angle square
- close
- pressure
- mulit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/08—Making machine elements axles or shafts crankshafts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
Abstract
The invention relates to a forging process of a multi-crank crankshaft. The forging process includes steps of 1), clamping, chewing and chamfering a steel ingot by top fire; 2), upsetting, lengthening, pressing eight corners, marking, pulling a small shaft at the front end, cutting off clout and pulling the small shaft again by medium fire; 3) pressing an intermediate crank to be the technical size by bottom fire, positioning an angle square, pressing a water gap end to crank to the technical size, finally positioning the angle square, pressing a riser end to the technical size, rounding a flange to the technical size, finishing, straightening, and completing; after size is set, checking the relative angles of various cranks by the angle square, using the intermediate crank as reference, and adjusting the relative angles of the cranks by a spanner. The forging process is material saving, high in production efficiency and low in cost.
Description
Technical field
The invention belongs to technical field of forging, particularly relate to a kind of Forging Technology of mulit-turning crankshaft.
Background technology
Mulit-turning crankshaft is used for big-block engine, its major function is carry-over moment, much stressed, the performance special due to it and structure, add its forging difficulty, the conventional forging method adopted at home at present have full combined type, semi-built-up and solid forging method due to crank throw and labyrinth integrated, to forge fiber continuous, but solid forging is shaping more difficult, forging quality requires high, and thus forging difficulty is larger, complex-shaped in forging process, be easy to occur quality problems.During current domestic forging mulit-turning crankshaft, many employings offset, angle is preset, and mostly only carry out integral forged crankshaft to complicated technologies such as six sides by garden to six side or all directions, forging process fire is secondary many, and deformation process is complicated, and cost is high, productivity ratio is low.
Summary of the invention
Object of the present invention, in order to solve the problems of the technologies described above, provides a kind of Forging Technology of mulit-turning crankshaft, and these technique materials are saved, and production efficiency simple to operation is high.Its technical scheme is as follows: a kind of Forging Technology of mulit-turning crankshaft, it is characterized in that, described mulit-turning crankshaft is made up of following component by weight percentage: carbon 0.38-0.43 silicon 0.15-0.35 manganese 0.75-1.00 phosphorus <0.035 sulphur <0.04 chromium 0.80-1.10 molybdenum 0.15-0.25, and surplus is Fe; Described Forging Technology comprises the steps: 1), the first fire will have an above-mentioned composition steel ingot pressing tongs material, gnaw the end, chamfered edge; 2), the second fire: jumping-up, pulls out pressure anistree, and number print, pulls out the little axle in front end, cut clout, then pull out little axle; 3), the 3rd fire: first turn in the middle of pressure to close to process, then with angle square location, setting-out mouth end turns to close to process, finally locate with angle square, pressure-pad mouth end turns to close to process, rounding flange to process, finishing, alignment, completion, after size puts in place, the relative angle respectively turned with angle square inspection, turn as benchmark with centre, the relative angle between respectively turning with spanner adjustment.
Compared with prior art, advantage of the present invention is: materials are saved, and production efficiency simple to operation is high, and cost is low.
Detailed description of the invention
Embodiment one
A Forging Technology for mulit-turning crankshaft, is characterized in that, described mulit-turning crankshaft is made up of following component by weight percentage: carbon 0.38 silicon 0.15 manganese 0.75 phosphorus 0.015 sulphur 0.01 chromium 0.80 molybdenum 015, and surplus is Fe; Described Forging Technology comprises the steps: 1), the first fire will have an above-mentioned composition steel ingot pressing tongs material, gnaw the end, chamfered edge; 2), the second fire: jumping-up, pulls out pressure anistree, and number print, pulls out the little axle in front end, cut clout, then pull out little axle; 3), the 3rd fire: first turn in the middle of pressure to close to process, then with angle square location, setting-out mouth end turns to close to process, finally locate with angle square, pressure-pad mouth end turns to close to process, rounding flange to process, finishing, alignment, completion, after size puts in place, the relative angle respectively turned with angle square inspection, turn as benchmark with centre, the relative angle between respectively turning with spanner adjustment.
Embodiment two
A Forging Technology for mulit-turning crankshaft, is characterized in that, described mulit-turning crankshaft is made up of following component by weight percentage: carbon 0.40 silicon 0.30 manganese 0.90 phosphorus 0.030 sulphur 0.03 chromium 0.90 molybdenum 0.20, and surplus is Fe; Described Forging Technology comprises the steps: 1), the first fire will have an above-mentioned composition steel ingot pressing tongs material, gnaw the end, chamfered edge; 2), the second fire: jumping-up, pulls out pressure anistree, and number print, pulls out the little axle in front end, cut clout, then pull out little axle; 3), the 3rd fire: first turn in the middle of pressure to close to process, then with angle square location, setting-out mouth end turns to close to process, finally locate with angle square, pressure-pad mouth end turns to close to process, rounding flange to process, finishing, alignment, completion, after size puts in place, the relative angle respectively turned with angle square inspection, turn as benchmark with centre, the relative angle between respectively turning with spanner adjustment.
Embodiment three
A Forging Technology for mulit-turning crankshaft, is characterized in that, described mulit-turning crankshaft is made up of following component by weight percentage: carbon 0.43 silicon 0.35 manganese 1.00 phosphorus 0.035 sulphur 0.04 chromium 1.10 molybdenum 0.25, and surplus is Fe; Described Forging Technology comprises the steps: 1), the first fire will have an above-mentioned composition steel ingot pressing tongs material, gnaw the end, chamfered edge; 2), the second fire: jumping-up, pulls out pressure anistree, and number print, pulls out the little axle in front end, cut clout, then pull out little axle; 3), the 3rd fire: first turn in the middle of pressure to close to process, then with angle square location, setting-out mouth end turns to close to process, finally locate with angle square, pressure-pad mouth end turns to close to process, rounding flange to process, finishing, alignment, completion, after size puts in place, the relative angle respectively turned with angle square inspection, turn as benchmark with centre, the relative angle between respectively turning with spanner adjustment.
Claims (1)
1. the Forging Technology of a mulit-turning crankshaft, it is characterized in that, described mulit-turning crankshaft is made up of following component by weight percentage: carbon 0.38-0.43 silicon 0.15-0.35 manganese 0.75-1.00 phosphorus <0.035 sulphur <0.04 chromium 0.80-1.10 molybdenum 0.15-0.25, and surplus is Fe; Described Forging Technology comprises the steps: 1), the first fire will have an above-mentioned composition steel ingot pressing tongs material, gnaw the end, chamfered edge; 2), the second fire: jumping-up, pulls out pressure anistree, and number print, pulls out the little axle in front end, cut clout, then pull out little axle; 3), the 3rd fire: first turn in the middle of pressure to close to process, then with angle square location, setting-out mouth end turns to close to process, finally locate with angle square, pressure-pad mouth end turns to close to process, rounding flange to process, finishing, alignment, completion, after size puts in place, the relative angle respectively turned with angle square inspection, turn as benchmark with centre, the relative angle between respectively turning with spanner adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261827.2A CN104841842A (en) | 2015-05-21 | 2015-05-21 | Forging process of multi-crank crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261827.2A CN104841842A (en) | 2015-05-21 | 2015-05-21 | Forging process of multi-crank crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104841842A true CN104841842A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510261827.2A Pending CN104841842A (en) | 2015-05-21 | 2015-05-21 | Forging process of multi-crank crankshaft |
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| CN (1) | CN104841842A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087795A (en) * | 2016-12-15 | 2019-08-02 | 日本制铁株式会社 | The manufacturing method of crankshaft forging |
| CN110918863A (en) * | 2019-12-12 | 2020-03-27 | 山东钢铁股份有限公司 | Forging method of three-throw eccentric crankshaft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3569158B2 (en) * | 1999-06-21 | 2004-09-22 | 本田技研工業株式会社 | Billet for cold forging |
| CN101733347A (en) * | 2008-11-17 | 2010-06-16 | 中国第一重型机械集团公司 | Process for forging pressing jaw of ingot body of steel ingot |
| CN101979179A (en) * | 2010-09-16 | 2011-02-23 | 江苏金源锻造股份有限公司 | Method for forging thin and short shaft section at end of large-scale step shaft |
| CN103691873A (en) * | 2013-12-31 | 2014-04-02 | 江苏金源锻造股份有限公司 | Forging process of engine crankshaft |
| CN104550594A (en) * | 2015-01-14 | 2015-04-29 | 重庆焱炼重型机械设备股份有限公司 | Supporting hinged shaft forging technology |
-
2015
- 2015-05-21 CN CN201510261827.2A patent/CN104841842A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3569158B2 (en) * | 1999-06-21 | 2004-09-22 | 本田技研工業株式会社 | Billet for cold forging |
| CN101733347A (en) * | 2008-11-17 | 2010-06-16 | 中国第一重型机械集团公司 | Process for forging pressing jaw of ingot body of steel ingot |
| CN101979179A (en) * | 2010-09-16 | 2011-02-23 | 江苏金源锻造股份有限公司 | Method for forging thin and short shaft section at end of large-scale step shaft |
| CN103691873A (en) * | 2013-12-31 | 2014-04-02 | 江苏金源锻造股份有限公司 | Forging process of engine crankshaft |
| CN104550594A (en) * | 2015-01-14 | 2015-04-29 | 重庆焱炼重型机械设备股份有限公司 | Supporting hinged shaft forging technology |
Non-Patent Citations (2)
| Title |
|---|
| 方军等: "《GB/T3077-1999合金结构钢》", 31 May 1982, 国家质量技术监督局 * |
| 鲍东辉等: "《QC/T481-2005汽车发动机曲轴技术条件》", 14 February 2005, 国家发展和改革委员会 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087795A (en) * | 2016-12-15 | 2019-08-02 | 日本制铁株式会社 | The manufacturing method of crankshaft forging |
| CN110918863A (en) * | 2019-12-12 | 2020-03-27 | 山东钢铁股份有限公司 | Forging method of three-throw eccentric crankshaft |
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| PB01 | Publication | ||
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Application publication date: 20150819 |
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| WD01 | Invention patent application deemed withdrawn after publication |