CN102042297A - Alloy steel hollow car axle and manufacturing process thereof - Google Patents
Alloy steel hollow car axle and manufacturing process thereof Download PDFInfo
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- CN102042297A CN102042297A CN2009100445606A CN200910044560A CN102042297A CN 102042297 A CN102042297 A CN 102042297A CN 2009100445606 A CN2009100445606 A CN 2009100445606A CN 200910044560 A CN200910044560 A CN 200910044560A CN 102042297 A CN102042297 A CN 102042297A
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Abstract
The invention relates to an alloy steel hollow car axle and a manufacturing process thereof. The manufacturing process comprises the following process steps of: blank forging, milling an end by a saw, rough turning, thermal refining, deep hole drilling and deep hole boring. The manufacturing process is characterized in that: blank material is 35CrMoA alloy steel, the forging ratio of blank is 8 to 12 in the step of blank forging, and the forged blank is subjected to normalizing treatment. By using the 35CrMoA alloy steel to manufacture a hollow car axle, the invention reduces the material cost of the hollow car axle, greatly improves the performance ratio of the hollow car axle, and reaches requirements of related standards on product quality by improving the manufacturing process. The alloy steel hollow car axle has good toughness, improved inner and outer surface quality and improved fatigue resistance performance and has no over-standard defect by magnetic powder inspection.
Description
Technical field
The present invention relates to a kind of axletree and production technology thereof of track traffic locomotive, particularly a kind of alloyed steel hole-bored axle from end to end and manufacturing process thereof are specifically related to 35CrMoA alloyed steel hole-bored axle from end to end and manufacturing process thereof.
Background technique
High-speed railway rolling stock such as rail motor set are when high speed operation, and its wheel is to impact anxious brush reinforcement with the raising of speed of rail.In order to improve the working life of rail, should reduce the impact of wheel to railway track, thus must reduce the following component weight of rolling stock bogie spring, and take turns the major part that weight is accounted for this part weight, so the design of hole-bored axle from end to end is arisen at the historic moment.In the prior art, be advanced technology with European axletree Acceptance criteria and method of manufacturing technology, the traditional performance parameter that EN 13261 (version in 2005) has worked out axletree, as chemical composition, mechanical property etc., the material that it adopted is EA4T.Because the alloyed steel of this material costs an arm and a leg, and method and apparatus of the prior art institute product processed up-to-standard rate is low, the production cost is too high, has limited it and has applied.Those skilled in the art once attempted adopting the quite lower alloyed steel of price for low EA4T, but it adopts processing technology of the prior art to be difficult to reach product standard.
In sum, hole-bored axle from end to end of the prior art and processing method thereof still have problems, and need further to improve.
Summary of the invention
The object of the present invention is to provide a kind of alloyed steel hole-bored axle from end to end manufacturing process, it can make the toughness of products of being produced good, and the cost performance height satisfies the usage requirement of bullet train.
Another object of the present invention is to provide a kind of alloyed steel hole-bored axle from end to end, it adopts said method production, has good toughness, the advantage that cost performance is high.
Technological scheme of the present invention is:
A kind of alloyed steel hole-bored axle from end to end manufacturing process, it comprises that blank forging, saw mill termination, rough turn, modified heat treatment, deep hole drill, boring process step, it is characterized in that: the material of its used blank is the 35CrMoA alloyed steel.
As to further improvement of the present invention, the forging ratio of blank is 8-12 in the described blank forging step.
As to further improvement of the present invention, described blank carries out normalized treatment after carrying out the blank forging step.
A kind of alloyed steel hole-bored axle from end to end, it adopts above-mentioned alloyed steel hole-bored axle from end to end fabrication process.
Beneficial effect of the present invention is: the present invention selects for use the 35CrMoA alloyed steel to produce hole-bored axle from end to end, reduced the cost of material of hole-bored axle from end to end, its cost performance is greatly enhanced, and the improvement by processing technology, make the quality of product reach the requirement of relevant criterion, as: be limited to more than 8 by adding up forging ratio, the metallographic structure that can make 35CrMoA alloyed steel hole-bored axle from end to end is uniform and delicate more, and satisfy vertically, the side knock performance requirement.Carry out normalizing heat treatment technique after forging at blank, improve the preceding interior tissue of the modified heat treatment of axletree, crystal grain thinning is for modified heat treatment is got ready.
In a word, the 35CrMoA axletree that provides of the present invention, its good toughness, performance reaches the axletree requirement of European norm, and the inner and outer surface quality improves, and does not have excessive defect after the magnetic particle flaw detection, has improved the anti-fatigue performance of axletree.
Embodiment
Embodiment 1:
A kind of alloyed steel empty wagons axle is made heart technology, and the material of its used blank is the 35CrMoA alloyed steel, and its production stage comprises blank forging, saw, mill the termination, rough turn, modified heat treatment, half finish turning, radially flaw detection, deep hole drill, boring, the deep hole honing, finish turning, magnetic is visited, correct grinding, roll extrusion, surface anticorrosion is handled, above-mentioned steps is undertaken by conventional method of the prior art, and wherein the forging ratio of blank is 8 in the blank forging step, and blank carries out normalized treatment after carrying out the blank forging step.
Adopt the alloyed steel hole-bored axle from end to end performance of above-mentioned explained hereafter to meet the requirement of company standard, its leading indicator reaches the requirement of European norm EN 13261, good toughness, and the inner and outer surface quality is good, does not have excessive defect after the magnetic particle flaw detection, has higher anti-fatigue performance.
Embodiment 1:
A kind of alloyed steel empty wagons axle is made heart technology, and the material of its used blank is the 35CrMoA alloyed steel, and its production stage comprises blank forging, saw, mill the termination, rough turn, modified heat treatment, half finish turning, radially flaw detection, deep hole drill, boring, the deep hole honing, finish turning, magnetic is visited, correct grinding, roll extrusion, surface anticorrosion is handled, above-mentioned steps is undertaken by conventional method of the prior art, and wherein the forging ratio of blank is 12 in the blank forging step, and blank carries out normalized treatment after carrying out the blank forging step.
Adopt the alloyed steel hole-bored axle from end to end performance of above-mentioned explained hereafter to meet the requirement of company standard, its leading indicator reaches the requirement of European norm EN 13261, good toughness, and the inner and outer surface quality is good, does not have excessive defect after the magnetic particle flaw detection, has higher anti-fatigue performance.
Claims (4)
1. alloyed steel hole-bored axle from end to end manufacturing process, it comprises that blank forging, saw mill termination, rough turn, modified heat treatment, deep hole drill, boring process step, it is characterized in that: the material of its used blank is the 35CrMoA alloyed steel.
2. alloyed steel hole-bored axle from end to end manufacturing process according to claim 1 is characterized in that: the forging ratio of blank is 8-12 in the described blank forging step.
3. alloyed steel hole-bored axle from end to end manufacturing process according to claim 2 is characterized in that: described blank carries out normalized treatment after carrying out the blank forging step.
4. an alloyed steel hole-bored axle from end to end is characterized in that: its each described alloyed steel hole-bored axle from end to end fabrication process of employing claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100445606A CN102042297A (en) | 2009-10-19 | 2009-10-19 | Alloy steel hollow car axle and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100445606A CN102042297A (en) | 2009-10-19 | 2009-10-19 | Alloy steel hollow car axle and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042297A true CN102042297A (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100445606A Pending CN102042297A (en) | 2009-10-19 | 2009-10-19 | Alloy steel hollow car axle and manufacturing process thereof |
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| CN (1) | CN102042297A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104588A (en) * | 2011-11-10 | 2013-05-15 | 天佑电器（苏州）有限公司 | Hollow shaft for gardening tool and processing method thereof |
| CN103161817A (en) * | 2013-04-07 | 2013-06-19 | 唐山德泰机械制造有限公司 | Hollow axle for high-speed locomotive and method for manufacturing hollow axle |
| CN103341735A (en) * | 2013-07-09 | 2013-10-09 | 中联重科股份有限公司 | Hollow shaft and method for producing same |
| CN103624498A (en) * | 2013-12-09 | 2014-03-12 | 北京机电研究所 | Forming method of hollow-shaft type part |
| CN111893256A (en) * | 2020-08-10 | 2020-11-06 | 湖南人文科技学院 | Manufacturing and strengthening method of high-performance core-setting connecting rod |
| CN112643296A (en) * | 2020-12-22 | 2021-04-13 | 太原重工轨道交通设备有限公司 | Manufacturing method for forge welding shaft bridge |
-
2009
- 2009-10-19 CN CN2009100445606A patent/CN102042297A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104588A (en) * | 2011-11-10 | 2013-05-15 | 天佑电器（苏州）有限公司 | Hollow shaft for gardening tool and processing method thereof |
| CN103104588B (en) * | 2011-11-10 | 2015-08-12 | 天佑电器（苏州）有限公司 | A kind of hollow shaft for garden instrument and processing method thereof |
| CN103161817A (en) * | 2013-04-07 | 2013-06-19 | 唐山德泰机械制造有限公司 | Hollow axle for high-speed locomotive and method for manufacturing hollow axle |
| CN103341735A (en) * | 2013-07-09 | 2013-10-09 | 中联重科股份有限公司 | Hollow shaft and method for producing same |
| CN103341735B (en) * | 2013-07-09 | 2016-06-08 | 中联重科股份有限公司 | Hollow shaft and method for producing same |
| CN103624498A (en) * | 2013-12-09 | 2014-03-12 | 北京机电研究所 | Forming method of hollow-shaft type part |
| CN111893256A (en) * | 2020-08-10 | 2020-11-06 | 湖南人文科技学院 | Manufacturing and strengthening method of high-performance core-setting connecting rod |
| CN111893256B (en) * | 2020-08-10 | 2021-02-23 | 湖南人文科技学院 | Manufacturing and strengthening method of high-performance core-setting connecting rod |
| CN112643296A (en) * | 2020-12-22 | 2021-04-13 | 太原重工轨道交通设备有限公司 | Manufacturing method for forge welding shaft bridge |
| CN112643296B (en) * | 2020-12-22 | 2022-09-20 | 太原重工轨道交通设备有限公司 | Manufacturing method for forge welding shaft bridge |
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Application publication date: 20110504 |