CN1111224C - Steel rail extruding technology using complex blocks - Google Patents
Steel rail extruding technology using complex blocks Download PDFInfo
- Publication number
- CN1111224C CN1111224C CN 98107800 CN98107800A CN1111224C CN 1111224 C CN1111224 C CN 1111224C CN 98107800 CN98107800 CN 98107800 CN 98107800 A CN98107800 A CN 98107800A CN 1111224 C CN1111224 C CN 1111224C
- Authority
- CN
- China
- Prior art keywords
- rail
- complex blocks
- rails
- extruding
- die
- 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 - Fee Related
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Abstract
The present invention relates to a combined type loose piece extrusion technology method for rails, and serial products which realize the change moulding of the cross section of a rail. The method is suitable for producing 22 products, such as irregular rails, AT rails, waist deviation wing rails, etc., and forging fork cores. The technology method has the outstanding characteristics that a combined type loose piece is used, a preforging working procedure is cancelled and full fibre heat processing moulding without cutting is kept.
Description
Technical field steel rail extruding technology using complex blocks method is applicable to forges the series of products that all rail profiles of railway change moulding.That is: be applicable to the heterotypic rail that two kinds of different rail connect; The tapered AT rail of the heel end that the dwarf forms special heavy section switch rail is connected with the standard rail; The wing rail of the local waist manomelia partially of pin-connected panel movable-point crossing and different rail are the forging fork heart etc. of the fixed railway frog of jack per line number not.
The technical background China railways begins to produce the AT rail from the seventies, successively adopts air forging hammer die forging, the special-shaped roll forging of large-sized rolling mills, hydraulic press loose piece (single entry) die forging and bundle around four kinds of processes such as formula forcing press die forgings.The eighties begins to produce heterotypic rail, successively adopts flame to cut the web of the rail and presses short rail height, welding and two kinds of processes of hydraulic press loose piece (single entry) die forging of the welding web of the rail.The moulding section that these processes have needs machine; The moulding section that has is nonstandard, presents the rail head pulling-down, and the flange of rail is not fully filled; The more mold exchange difficulty that has, labour intensity is big, and the passage of die forging is many; A kind of mould that has only is applicable to a kind of rail product, changes a kind of rail product needed and changes whole moulds, and number of molds is many, the expense height; When the appearance mould that has wears away, can not adjust, the mould consumption is big; The welding procedure imperfection that has can not be by rail fatigue test in kind.
Along with the railroad track development of modernization, the rail product order of the different instructions for uses of railway is by increasing.The above-mentioned many processes that adopt can not be suitable for the product that all rail profiles change moulding at present.
Summary of the invention the purpose of this invention is to provide a kind of process that is applicable to whole series of products of using complex blocks extruding railway section variation moulding rail, and the most outstanding characteristics of this process are to use the using complex blocks cancellation to give the maintenance of forger preface does not have the full fiber thermo forming of cutting.
The present invention is further described below in conjunction with accompanying drawing and example for description of drawings:
Fig. 1: the rail of 1 extruding; 2 bed dies; 3 using complex blocks moulds; 4 waist moulds;
5 upper bolsters; 6 die shoes.
Fig. 1 is the general assembly drawing of rail using complex blocks extrusion die.
Fig. 2 is the side view of rail using complex blocks extrusion die.
The object of the present invention is achieved like this for the specific embodiment, it adopts the single cylinder hydraulic press is the power source of extrusion forging, with the cover die holder up and down of increasing or making up lengthening capable of being combined, putting into the waist mould in the die holder up and down, using complex blocks and bed die extruding are adopted using complex blocks not need to give and are forged the waist mould, save the mould fabricating cost, alleviate the labour intensity of die change, increase extrusion process, reduce the number of times of rail heating.
The technological process of rail using complex blocks extruding of the present invention is:
1, the adherence pressure machine is placed upside down in the rail that is heated to 1050 ℃ in the die shoe rail head groove;
2, left and right sides waist mould is placed on the platform of die shoe, using complex blocks is placed on the work side of waist mould;
3, bed die is placed on the flange of rail of heating rail;
4, forcing press presses down matched moulds and pressurizes 1000～1200T, 2 seconds of pressurize at least;
5, the rail moulding of adherence pressure machine extruding.
The technology of rail using complex blocks extruding of the present invention can be accomplished: short rail is pressed high, press high rail short, the compression of the rail flange of rail is shortened, the calendering of the rail flange of rail is increased, asymmetric rail is pressed into the rail of symmetry, the rail of symmetry is pressed into asymmetric rail, certain section or certain size billet is pressed into complicated " scholar " swaged forging makes the fork heart.
Steel rail extruding technology using complex blocks of the present invention, an available mold are produced following 22 series of products:
1, AT rail heel end extruding: a 75AT left side, the 75AT right side, a 60AT left side, the 60AT right side, totally six kinds on a 50AT left side, the 50AT right side;
2, heterotypic rail extruding: 75/60,60/50,50/43 totally three kinds;
3, local waist manomelia wing rail partially extruding: 75,60 totally two kinds;
4, forge the extruding of the fork heart: 75#18,75#12,75#9,60#18,60#9,50#18,50#12,50#9,43#12, totally nine kinds.
Adopt when of the present invention, the mould and the frock drawing of 20 products can be provided.
Claims (5)
- One, a kind of steel rail extruding technology using complex blocks, it is characterized in that: processing step is as follows:1, adherence pressure machine is placed upside down in the rail that is heated to 1050 ℃ in the die shoe rail head groove;
- 2, left and right sides waist mould is placed on the platform of die shoe, using complex blocks is placed on the work side of waist mould;
- 3, bed die is placed on the flange of rail of heating rail;
- 4, forcing press presses down matched moulds and pressurizes 1000～1200t, 2 seconds of pressurize at least;
- 5, the rail moulding of adherence pressure machine extruding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98107800 CN1111224C (en) | 1998-04-20 | 1998-04-20 | Steel rail extruding technology using complex blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98107800 CN1111224C (en) | 1998-04-20 | 1998-04-20 | Steel rail extruding technology using complex blocks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1232901A CN1232901A (en) | 1999-10-27 |
| CN1111224C true CN1111224C (en) | 2003-06-11 |
Family
ID=5219452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98107800 Expired - Fee Related CN1111224C (en) | 1998-04-20 | 1998-04-20 | Steel rail extruding technology using complex blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111224C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912945B (en) * | 2010-07-29 | 2012-04-18 | 中国铁建重工集团有限公司道岔分公司 | Method for forging and pressing heel of AT steel rail |
-
1998
- 1998-04-20 CN CN 98107800 patent/CN1111224C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1232901A (en) | 1999-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |