CN101456058B - Forming method of highway, railway basin type bearing metal structure piece - Google Patents
Forming method of highway, railway basin type bearing metal structure piece Download PDFInfo
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- CN101456058B CN101456058B CN2008102474793A CN200810247479A CN101456058B CN 101456058 B CN101456058 B CN 101456058B CN 2008102474793 A CN2008102474793 A CN 2008102474793A CN 200810247479 A CN200810247479 A CN 200810247479A CN 101456058 B CN101456058 B CN 101456058B
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- forging
- metal structure
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- type bearing
- bearing metal
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Abstract
The invention discloses a shaping method for a basin shaped support metal structure for a highway and a railway, which comprises the following steps: 1) heating a module blank in an ultrasonic heating furnace to the temperature of 1,150 DEG C; 2) taking out the module blank, and removing an oxide coating on vibratory equipment; and 3) then putting the module blank in a die fixed on a hot die forging press in advance, and applying pressure of 11,100 to 13,000 N/cm<2> to the hot die forging press according to a projection area of a forged piece to forge and shape the module blank. The forging preferably comprises pre-forging, middle forging and final forging. The method overcomes the defects of the prior casting technique, and can quickly and efficiently process and shape the basin shaped rubber support metal structures widely applied to large constructional engineering of highways, railways and bridges.
Description
Technical field
The invention belongs to a kind of machine-shaping technology of metal material, relate in particular to the forming method of a kind of highway, railway basin type bearing metal structure piece.
Background technology
The major metal structural member of highway, railroad bridge pot rubber bearing all is the little smelting process Foundry Production that adopts tradition, falls behind all the time, the falling behind relatively of this technology causes that energy consumption height, yield rate are low, internal defect in cast rate height, to make efficient low, the member rate of molten steel per ton has only 60-70%, and the allowance of finished product foundry goods accounts for more than 30% of processed finished products spare, well imagine that the consumption of a finished-product material that obtains has much! And because the surperficial irregular of conventional cast technology product, machined efficient is extremely low, and machine tool consumption is also very big, virtually, all is great waste to manpower and materials.
Minimum the wanting more than 20 hours of production cycle of a cast member of production standard of casting technique so output is low, do not satisfied the needs of current productivity high speed development.
Summary of the invention
The forming method that the purpose of this invention is to provide a kind of highway, railway basin type bearing metal structure piece, international, domestic now advanced forging equipment of its general and process application are in the forming method to highway, railway basin type bearing metal structure piece, can obtain huge economic benefit and social benefit, forming technique to the metal material in this field is a revolution, having changed traditional process, is brand new concept.
For achieving the above object, the present invention takes following design:
A kind of forming method of road and rail basin type bearing metal structure piece, its method step is as follows:
1) the module blank is heated to 1150 ℃ in the ultrasonic wave heating furnace;
2) take out, on vibratory equipment, remove oxide skin;
3) put into then in the mould that is fixed in advance on the hotdie forging press, on hotdie forging press, impose 11100-13000N/cm by the forging projected area
2The pressure forging forming.
Described forging forming is at least through blocking, finish-forging two forging moldings; Better through blocking, middle forging, finish-forging three forging moldings.
The forming method of road and rail basin type bearing metal structure piece of the present invention has overcome the some shortcomings part of conventional cast technology, the pot rubber bearing hardware of machine-shaping highway that can be rapidly and efficiently, railroad bridge, large-scale construction engineering extensive use.
Advantage of the present invention is:
1) a kind of new reform of road and rail basin type bearing metal structure piece forming method can replace the cast member that little smelting process is produced fully, and technology benefits grasp, is beneficial to popularization.
2) forming method of road and rail basin type bearing metal structure piece of the present invention under the situation of equal equipment and energy consumption, can improve the shaping efficiency hundred times than existing Casting Technology.
3) stock utilization, yield rate are high, and machined efficient comparison cast member can significantly improve, and the machined cutter for same life-span can improve more than ten times, thereby have realized energy-conservation, low consumption, high efficiency.
4) save steel, energy savings has greatly improved machined efficient.While forging itself all has significantly raising so this technology to meet our national saving energy and reduce the cost and the STRATEGIES OF SUSTAINABLE DEVELOPMENT policy of advocating at present than the fatigue resistance of cast member, anti-yield strength and surperficial resistance to corrosion.
The specific embodiment
The forming method of road and rail basin type bearing metal structure piece of the present invention, its method step is as follows:
1) the module blank is placed on is heated to 1150 ℃ in the ultrasonic wave heating furnace, this is the only forging molding temperature of this material;
2) take out, on vibratory equipment (polytype vibratory equipment all can be realized), remove oxide skin;
3) the module blank that will handle is then put in the mould that is fixed in advance on the hotdie forging press, imposes 11100-13000N/cm by the forging projected area on hotdie forging press
2Pressure carry out segmented forging and pressing, until the moulding requirement of satisfying the module blank.
Because the forging projected area is bigger, need at least through blocking, finish-forging two-part forging and pressing forging forming.During practice was groped, it was good should imposing three forging moldings to these road and rail basin type bearing metal structure pieces (especially concerning big member), both blocking, middle forging, finish-forging.And a hotdie forging press can only be provided with a station, be difficult to satisfy the technology of implementing three forging moldings, and adopt many hotdie forging presses to increase huge equipment input again, and occupy big quantity space and manpower, so the inventor has adopted the unique design of oneself: a mold has three formpistons of a former, in forming process, are furnished with two manipulators (manipulator), sequentially-operating, twice quick change formpiston, all course of action can be finished in three to five minutes, thereby realized unit, single station, blank once heats unique process of three forging moldings, this method is raised the efficiency hundred times under the equal energy consumption equipment situation of casting technique, because according to minimum the wanting more than 20 hours of production cycle of the cast member of production standard of casting technique, and the forging forming process of Forging Technology has only three to five minutes.Be that closed contour forging technique stock utilization reaches more than 95% because of this process using again, yield rate is 100% (getting rid of under the situation of forging and pressing process device fault) almost, the inner zero defect rate 100% of forging, the high allowance of product dimensional accuracy is minimum simultaneously, and need not according to technological requirement and machined standard forge piece inoperative surface that allowance-the machined efficient comparison cast member of this forge piece can improve three to five times like this, because the cast member of equal specification is wanted about three hours a process time, and only use less than one hour the process time of one of forge piece, and the machined cutter for same life-span can improve more than ten times.
In addition, the member that forges by the forming method of road and rail basin type bearing metal structure piece of the present invention than the casting technique moulding component performance better, its allowable stress [σ]=110-120MPa, anti-yield strength is 345Mpa; And the allowable stress of cast member is [σ]=100-110Mpa, and anti-yield strength is 270Mpa.
Claims (1)
1. the forming method of a road and rail basin type bearing metal structure piece is characterized in that described method step is as follows:
1) the module blank is heated to 1150 ℃ in the ultrasonic wave heating furnace;
2) take out, on vibratory equipment, remove oxide skin;
3) put into then in the mould that is fixed in advance on the hotdie forging press, on hotdie forging press, impose 11100-13000N/cm by the forging projected area
2The pressure forging forming; This forging forming is through blocking, middle forging and finish-forging three forging moldings; Comprise a former in the mold in the described mould that is fixed in advance on the hotdie forging press, this mold comprises a former and three formpistons, when the separate unit hotdie forging press is carried out the forging forming operation, is cooperated by two manipulators, sequentially-operating, twice quick change formpiston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102474793A CN101456058B (en) | 2008-12-31 | 2008-12-31 | Forming method of highway, railway basin type bearing metal structure piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102474793A CN101456058B (en) | 2008-12-31 | 2008-12-31 | Forming method of highway, railway basin type bearing metal structure piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101456058A CN101456058A (en) | 2009-06-17 |
| CN101456058B true CN101456058B (en) | 2010-08-25 |
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ID=40767340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102474793A Expired - Fee Related CN101456058B (en) | 2008-12-31 | 2008-12-31 | Forming method of highway, railway basin type bearing metal structure piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101456058B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769860A (en) * | 2013-11-27 | 2014-05-07 | 山东建筑大学 | Die forging forming method for high-speed railway bridge support |
| CN103691859B (en) * | 2013-12-15 | 2016-05-25 | 无锡透平叶片有限公司 | A kind of die-forging forming method of mount pad |
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2008
- 2008-12-31 CN CN2008102474793A patent/CN101456058B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101456058A (en) | 2009-06-17 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20161231 |