CN2177729Y - Blast-cooling device for heat treatment of fracture surface of rail - Google Patents
Blast-cooling device for heat treatment of fracture surface of rail Download PDFInfo
- Publication number
- CN2177729Y CN2177729Y CN 93242062 CN93242062U CN2177729Y CN 2177729 Y CN2177729 Y CN 2177729Y CN 93242062 CN93242062 CN 93242062 CN 93242062 U CN93242062 U CN 93242062U CN 2177729 Y CN2177729 Y CN 2177729Y
- Authority
- CN
- China
- Prior art keywords
- cooling
- rail
- air
- cooling device
- wind spraying
- 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 - Lifetime
Links
Images
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The utility model relates to a heat treatment device which is used for producing high-strength variable cross-section steel rails. The utility model is composed of a (or a set of) three-dimensional wind spraying cooling device and a (or a set of) one-dimensional wind spraying cooling device. The wind spraying cooling device is composed of a wind spraying device and a spaying mouth. The surface included angle of the spaying mouth and the wind spraying device is 79 to 30DEG, which are distributed in the shape of a plum blossom. The head stepping surface and the two side surfaces of the variable cross-section steel rail are carried out wind spraying cooling, which are cooled to 600 to 300DEG DGE C at a definite cooling velocity. Thus, homogeneous fine pearlite tissues can be obtained. The device can adjust the cooling velocity and cooling parts according to the rail head cross-sections, having the advantages of little compressed air consumption, cost reducing and noise decreasing.
Description
The utility model belongs to the heat treatment technics equipment used.It is a kind of heat treated spray air-cooling device of special change section rail that is used for.
In order to improve the work-ing life of railway track, both at home and abroad the rail heat treatment technics is developed, produce and have high-intensity rail, to satisfy the needs of transportation by railroad.Wherein, the special rail of tongue that railway switch is used and so on also proposes high tough performance requriements.
Point tongue belongs to special change section rail, and because of its rail head cross-section changes, this will bring certain difficulty to the thermal treatment of this type of rail.As the heat treated refrigerating unit of above-mentioned special rail, commonly used now is a kind of spray cooling device that adopts water and pressurized air mixing heat-eliminating medium.But this type refrigerating unit, the instability that is difficult to overcome when having spraying " is breathed " the phenomenon, and is also excessive because of speed of cooling, and is not easy to controlled chilling position and scope, to adapt to the shortcomings such as variation of rail head cross-section, directly influenced the performance of the stable of technology and assurance product.Occurred class spray air-cooling device subsequently, it is to be heat-eliminating medium with pressurized air, to the rail heat-treating apparatus after heating.(China patent No. ZL92241881.0).It is only as the heat treated refrigerating unit of ordinary fixed section rail, and inapplicable for the spray air-cooling device of the special rail of point tongue and so on.
The purpose of this utility model is to provide a thermal treatment refrigerating unit that is applicable to special cross section such as point tongue, make spray at a high speed air-flow with from do not disturb mutually between the air-flow of rail return reflection surface, the pressurized air consumption is low, good cooling results, can adjust the spray air-cooling device of cooling end position and adjusting speed of cooling.
The utility model is achieved in that this device is made up of two-part (or multi-stage type) spray forced air cooler.Wherein, one section refrigerating unit is made up of the air jetting device of the special rail's end portion tread of one (or one group) cooling and the air jetting device that two (or two groups) cool off the rail head two sides respectively: another section refrigerating unit is made up of the air jetting device of the special rail's end portion tread of one (or one group) cooling.This installs a plurality of high-velocity nozzles that quincunx distributes that are in each air jetting device, each nozzle shaft is 79～30 ° to the angle α with the formation of air jetting device surface.Pressurized air is sprayed to the special rail's end portion of behind heating and certain natural air cooling (or after carrying out certain water-cooled again) at a high speed through air jetting device, make it be cooled to certain temperature with certain speed of cooling.Simultaneously, owing in the air jetting device of cooling rail head tread, be added with two dividing plates, after the rail head width is reduced to certain size, the dual-side nozzle of above-mentioned air jetting device can be closed; In addition, also can be with rail head two sides corresponding air jetting device nozzle Close All.Thereby adjust its cooling position and regulate corresponding speed of cooling, to adapt to the variation of special rail profile.
The utility model has the advantages that: (1) can adapt to the variation of special rail profile, adjusts the cooling position and regulates speed of cooling; (2) process stabilizing, easy and simple to handle; (3) good cooling results; (4) compressed air consumption can save 40～70%; (5) can obtain uniform fine pearlite tissue, point tongue improves more than two times work-ing life; (6) reduced cost; (7) reduced noise.
Below in conjunction with accompanying drawing to the utility model further detailed description.
Fig. 1 is two-part spray air-cooling device side-view.
Fig. 2 is three-dimensional spray air-cooling device figure.
Fig. 3 is one dimension spray air-cooling device figure.
Among the figure, piece number 1 is the rail head of point tongue, and piece number 2 is adjustable air jetting devices, and piece number 3 is fixed air jetting devices, and piece number 4 is nozzles.Point tongue belongs to the special cross section rail, and the section of its rail head 1 changes.As shown in Figure 1, the spray air-cooling device is made up of two-part spray air-cooling device.Wherein, one section refrigerating unit is that one (or one group) three-dimensional spray air-cooling device (see figure 2) is formed, and it is made up of (or one a group) adjustable air jetting device 2 and two (or two groups) fixed air jetting devices 3; Another section refrigerating unit is that (or one group) one dimension spray air-cooling device is formed (see figure 4), and it is made up of (or one a group) fixed air jetting device 3.Adjustable air jetting device 2 as shown in Figure 2, two dividing plates are arranged in casing, three blast tubes are arranged, dual-side and top blast tube can be separated air feed, the setting angle α of air jetting device 2 and 3 nozzle 4 and casing is that 79～30 °, aperture are φ 1～φ 12mm, and nozzle 4 is that a plurality of quincunxs that are distribute.
The utility model is achieved in that when blocking the way switch blade rail is the width 〉=35mm of 0.3～1.0m/min, rail head 1 with respect to this device by the unidirectional movement continuously of direction shown in the arrow, its speed among Fig. 1, air jetting device 2 and 3 in the three-dimensional spray air-cooling device (see figure 2) sprays to rail at a high speed with pressurized air, cools off tread and two sides of rail head 1 respectively; When the width of rail head 1＜35mm, adjustable air jetting device 2 dual-side nozzles 4 in the three-dimensional spray air-cooling device (see figure 3) are closed, the fixed air jetting device 3 of both sides is Close All also, and the fixed air jetting device 3 of the air-cooling device of one dimension spray is simultaneously opened spray wind and only cooled off tread. Air jetting device 2 and 3 can be with pressurized air with 5～20m
3The flow of/min sprays to rail at a high speed, make the point tongue after the heating be cooled to 600～300 ℃ with the speed of cooling of 1.5～17.5 ℃/sec, thereby obtain uniform fine pearlite tissue, its Vickers' hardness is that 400～306(Brinell hardness is 390～300).
Change the spacing between each nozzle and the aperture of nozzle, can change cooling power and speed of cooling.The material of nozzle can be made with steel, copper, pottery, plastics or other heat-resisting mechanically resistant material.
Claims (2)
1, a kind of production high strength becomes the thermal treatment unit of section rail, it is made up of two-part spray air-cooling device, wherein one section is that one group of three-dimensional spray air-cooling device is formed, it is made up of one group of adjustable air jetting device (2) and two groups of fixed air jetting devices (3), another section is that one group of fixed air jetting device (3) is formed one dimension spray air-cooling device, it is characterized in that each air jetting device has a plurality of nozzles (4) that quincunx distributes that are, each nozzle shaft is to being 79～30 ° of angles with the air jetting device surface, the nozzle of each air jetting device (4) can partly be closed, to regulate speed of cooling and cooling position.
2, thermal treatment unit according to claim 1 is characterized in that it is φ 1～φ 12mm that nozzle adopts the aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242062 CN2177729Y (en) | 1993-10-19 | 1993-10-19 | Blast-cooling device for heat treatment of fracture surface of rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242062 CN2177729Y (en) | 1993-10-19 | 1993-10-19 | Blast-cooling device for heat treatment of fracture surface of rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177729Y true CN2177729Y (en) | 1994-09-21 |
Family
ID=33815865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93242062 Expired - Lifetime CN2177729Y (en) | 1993-10-19 | 1993-10-19 | Blast-cooling device for heat treatment of fracture surface of rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177729Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443617C (en) * | 2005-12-29 | 2008-12-17 | 攀枝花钢铁(集团)公司 | Pearlitic heat-treated steel rail and production method thereof |
| CN105177242A (en) * | 2015-08-06 | 2015-12-23 | 中铁宝桥集团有限公司 | Movable air blasting and cooling device for heated steel rail head |
-
1993
- 1993-10-19 CN CN 93242062 patent/CN2177729Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443617C (en) * | 2005-12-29 | 2008-12-17 | 攀枝花钢铁(集团)公司 | Pearlitic heat-treated steel rail and production method thereof |
| CN105177242A (en) * | 2015-08-06 | 2015-12-23 | 中铁宝桥集团有限公司 | Movable air blasting and cooling device for heated steel rail head |
| CN105177242B (en) * | 2015-08-06 | 2017-04-05 | 中铁宝桥集团有限公司 | Compressed air cooling device after a kind of movable rail head of rail heating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4004732A (en) | Snow making method | |
| JPS5848019B2 (en) | Spray cooling method and device for steel plate | |
| CN101293229B (en) | A dual-purpose cooling device for jet and spray | |
| MX170945B (en) | METHOD AND EQUIPMENT FOR THE PRODUCTION OF SNOW | |
| US4570447A (en) | Removing frost deposits from cooling-coil batteries in a freezing plant during operation | |
| CN1032656C (en) | Heat treatment method and apparatus for rail | |
| CN2177729Y (en) | Blast-cooling device for heat treatment of fracture surface of rail | |
| CN103834792A (en) | Continuous roller type quenching technical method for steel plate | |
| CN203417938U (en) | Wind and fog hybrid control cooling device for high-speed wire rods | |
| CN115386699A (en) | A 2~4mm high-strength steel roll type gas quenching device | |
| CN100443599C (en) | A heat treatment method for high-strength heavy rail head | |
| EP0744583A3 (en) | Impingement jet freezer and method | |
| CN2144128Y (en) | Air-blast cooler for heat treatment of rails | |
| CN103406372A (en) | Method and device for cooling high-speed wire rod through air-mist mixed control | |
| KR950005789B1 (en) | Process for heat treating carbon steel wire | |
| CA1303468C (en) | Method for heat-treating steel rail head | |
| CN104017956A (en) | Spraying and air cooling dual-purpose quenching device | |
| CN107335770A (en) | Fixture, forging press and heat treatment system and Technology for Heating Processing are used in rail forging and stamping | |
| CN114592112B (en) | Flexible cooling device for tempered steel plate | |
| CN107287397A (en) | A kind of hot continuous-milling steel plate cooling device for thermal treatment and control method | |
| CN110846605A (en) | Strip steel cooling device | |
| CN202881327U (en) | Spray cooling quenching device of premixed steel rail | |
| CN101701284A (en) | Heat treatment method for steel rail | |
| CN2639348Y (en) | Jet-air cooling device for rail welding heat treatment | |
| CN217377969U (en) | A device for flexible cooling of steel plates after tempering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |