CN102615488A - Production process of wire clamp and cushion block for electrification high-speed railway - Google Patents
Production process of wire clamp and cushion block for electrification high-speed railway Download PDFInfo
- Publication number
- CN102615488A CN102615488A CN2012100838397A CN201210083839A CN102615488A CN 102615488 A CN102615488 A CN 102615488A CN 2012100838397 A CN2012100838397 A CN 2012100838397A CN 201210083839 A CN201210083839 A CN 201210083839A CN 102615488 A CN102615488 A CN 102615488A
- Authority
- CN
- China
- Prior art keywords
- extruding
- adopt
- extrusion
- ingot casting
- stretching
- 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.)
- Pending
Links
Images
Landscapes
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a production process of a wire clamp and a cushion block for an electrification high-speed railway, wherein the flow of the process is smelting, semi-continuous casting, sawing and ingot casting, checking, induction heating of cast ingots, hot extrusion, checking, acid-pickling, cleaning, head making, drawing, checking, finishing, sawing, drilling, reaming, chamfering, annealing of protective gases, cleaning, checking and packaging. The production process of the wire clamp and the cushion block for the electrification high-speed railway provided by the invention is simple to manufacture, large-batch scale production is easy to realize, and the production efficiency is improved greatly; moreover, the yield of the products produced by a wire cutting technology is high, the cycle is short, and the cost is low by comparison. The products produced by the production process provided by the invention can completely replace imported and domestic feedback wire clamps, electrically connected wire clamps and cushion blocks through wire cutting and manufacturing.
Description
Technical field
The present invention relates to the processing technology of copper heterotype material, specifically refer to electrified high-speed railway feedback wire clamp, electrically connecting clamp and cushion block production technology with profile shapes.
Background technology
Got into since 21st century, along with the high speed development of Chinese national economy, high-speed railway has also correspondingly obtained development at full speed, but most of technology until parts fully by external introduction.Wherein use the wire clamp of the electrical connection of railway carrier cable copper hinge line, introduce and employing Japan or German technology, adopt their part simultaneously, but cost an arm and a leg.In order to satisfy the needs in market; Be convenient to that foreign technology is domestic to be digested and assimilated, form the intellectual property of oneself, reduce use cost; Attempt method production with machining; But not only planform is complicated for feedback wire clamp, electrically connecting clamp and cushion block (extremely shown in Figure 7 like Fig. 1), and has relatively high expectations for its internal soundness, dimensional accuracy, special inner surface quality, adopts conventional machining process to produce; Go out product with machining after existing general employing line cuts out shape, be single-piece production, can not form large-scale production, yield rate is low, be merely about 34%, and the process-cycle is long, and cost is also high.
Summary of the invention
The present invention provides the production technology of a kind of electrified high-speed railway with wire clamp and cushion block, except that the production that forms continuous large-scale, reducing cost, reaches and satisfy the designing requirement and the instructions for use of this product fully.
For this reason; Adopt following technical scheme: a kind of electrified high-speed railway is with the production technology of wire clamp and cushion block, and this technological process is: melting, semi-continuous casting → sawing ingot casting → inspection → eddy-current heating ingot casting → hot extrusion → inspection → pickling → clean → do head → stretching → inspection → finishing → sawing → boring → fraising → chamfering → protective gas annealing → cleaning → inspection → packing; Wherein:
In described melting, the semi-continuous casting operation, the cathode copper that adopts high-quality as raw material founding to go out ingot casting subsequent use; When founding, adopt the deoxidation of wooden carbon covering and heat insulating and add phosphorus and make deoxidier, charcoal toasted 4～5 hours in 600～800 ℃ of calcining furnaces before using;
In the described hot extrusion operation, adopt continuous hot-extrusion mold that said ingot casting is squeezed into the stretching blank, each parameter of hot extrusion is confirmed as follows:
The extrusion temperature of a, ingot casting is 800～850 ℃, and identical extrusion ratio 20～35 is adopted at each interface; Adopt high extruding force; Adopt lower extrusion speed, metal flow speed: 0.5～0.8 meter per second;
B, employing decortication extruding, decortication thickness: 1.1～1.5mm
It is surplus to keep certain thickness pressure when c, extruding, adopts forward, flat-die extruding during extruding, and institute stays and presses surplus thickness is 30～35 millimeters;
D, cleaning recipient, every extruding is once cleaned out copper sheet in the liner and oxide;
In the described stretching process, adopt continuous drawing die that said stretching blank is drawn into the finished product web; Each parameter that stretches is confirmed as follows: the pass reduction of stretching is 10%～20%, and the one-off drawing finished product adopts the bigger rapeseed oil of viscosity as lubricant, and draw speed is: 10 meters～20 meters/minute;
In the described protective gas annealing operation, adopt the annealing of ammonia decomposing protection property atmosphere, annealing temperature: 550～600 ℃, temperature retention time: 5 hours; Cool off with stove.
The present invention through founding, add hot extrusion, stretching provides web, sawing scale, protective gas annealing, processing is simple, realizes large batch of large-scale production easily, significantly enhances productivity.And compare with the finished product rate of wire cutting technology processing is high, the process-cycle is short, cost is low.
Adopt feedback wire clamp, electrically connecting clamp and the cushion block of the present invention's processing to satisfy the specification requirement of its setting fully: carrier cable and the cross-sectional area that is used in cross-sectional area and is 70 square millimeters is 95 square millimeters being electrically connected of electric connection line; The sliding load of Horizontal messenger wire clamp and electric connection line is not less than 4,000 newton after the crimping; Wire clamp resistance is not more than the resistance that equal length is connected lead after the crimping.Wire clamp is not more than the temperature rise that is connected lead with the temperature rise of lead junction.Electric property: 20 ℃ of conductance >=98%.Resistance value after the cyclic test of overload electric heating is not more than equal length rope resistance value.The current-carrying capacity of wire clamp is not less than the current-carrying capacity that is connected lead.The state of the state of product between semihard and soft state.So, feedback wire clamp, electrically connecting clamp and the cushion block complete alternative import of product of the present invention or state's interior lines cutting processing.
Description of drawings
Fig. 1-Fig. 7 is the structural representation of the machinable various profile shapes of the present invention;
Fig. 8 is the cross-sectional view of hot-extrusion mold of the present invention;
Fig. 9 is the cross-sectional view of drawing die of the present invention.
The specific embodiment
Following embodiment is an example with the manufacturing approach of electrically connecting clamp.
1, a kind of electrified high-speed railway is with the production technology of wire clamp and cushion block, and this technological process is: melting, semi-continuous casting → sawing ingot casting → inspection → eddy-current heating ingot casting → hot extrusion → inspection → pickling → clean → do head → stretching → inspection → finishing → sawing → boring → fraising → chamfering → protective gas annealing → cleaning → inspection → packing; Wherein:
In described melting, the semi-continuous casting operation, adopt the high-quality cathode copper that meets GB/5231T-2001 regulation as raw material, to guarantee the chemical composition of product, it is subsequent use that the semi-continuous casting method casts out ingot casting; In fusion-casting process, owing to be prone to oxidation, air-breathing under red copper (T2) high temperature; Make coverture with charcoal during founding, must carefully choose foreign material before charcoal uses after, in 600～800 ℃ of calcining furnaces, toasted 4～5 hours; To remove pernicious gas.Charcoal has deoxidation, insulation effect concurrently.Make deoxidier with phosphorus, control the oxygen content in the ingot casting.Owing to when objectionable impurities content such as bismuth, cerium, sulphur, phosphorus, oxygen are high, can cause ingot casting to crack, therefore old material uses and is no more than 5%, is strictly on guard against batch mixing simultaneously.
The selection of smelting-casting equipment: adopt electronic stirring, be prone to 1.5 tons of power frequency cores induction furnace melting that sealing covers, adopt vertical semi-continuous casting to produce ingot casting.Casting temperature: 1160～1180 ℃; Casting speed: 10～12 meters/hour; Cooling water pressure: 0.1～0.15MP.Semi-continuous casting goes out the ingot casting base of ￠ 145.At sawing machine sawing ￠ 145X150 ingot casting, checking does not have the qualified ingot casting of defectives such as pore slag inclusion to change hot extrusion over to.
In the described hot extrusion operation, adopt with said feedback wire clamp, electrically connecting clamp and the suitable Continuous Heat extrusion die of cushion block shape said ingot casting is squeezed into the stretching blank, each parameter of hot extrusion is confirmed as follows:
The extrusion temperature of a, ingot casting is 800～850 ℃, and identical extrusion ratio 20～30 is adopted at each interface; And high extruding force; Adopt lower extrusion speed, metal flow speed: 0.5～0.8 meter per second; Ingot casting adopts Fast Heating, avoids ingot casting to heat at a slow speed in high-temperature residence time length and makes crystal grain thick, and oxidation is serious.Be specially: the ingot casting of the ￠ 145X150 power frequency induction furnace of packing into is heated to 800～850 ℃; Adopt the extruding of UBE880ST floating type oil extruder; Will be during extruding to compression tool preheating and lubricated, preheat temperature is 300～350 ℃.The extrusion die of preheating is installed in the extrusion equipment: the ingot casting that heats is sent in the recipient and is pushed, and squeezes out product.
With reference to Fig. 8, the cross-section structure of said Continuous Heat extrusion die is: the core rod 1 of said hot-extrusion mold is single awl monoblock type, and its inner-cavity structure is followed successively by from the feeding mouth to the discharging opening: inlet region 2, sizing area 3, cone angle transition region 4 and outlet area 5; Said sizing area 3 enlarges the said inlet region 2 of formation to the front end face tapering of said core rod 1, and enlarges transition by cone angle transition region 4 between this sizing area 3 and the outlet area 5; Equal and the said electrified high-speed railway feedback of the shape of cross section of said inlet region 2, sizing area 3, cone angle transition region 4 and outlet area 5 wire clamp, electrically connecting clamp and cushion block evenly amplify with the cross sectional shape size of the consistent and said sizing area 3 of the shape of the profile shapes geomery than said profile shapes; 0.3,0.4,0.5,0.6,0.7 or 0.8 millimeter of monolateral amplification.
The length of the inlet region 2 of said core rod 1 is 8,9,10,11,12,13,14 or 15 millimeters, and the length of sizing area 3 is 4,5 or 6 millimeters; The inlet region 2 of said core rod 1 is 35 °～45 ° with the tapering of cone angle transition region 4, makes the cross sectional shape size of outlet area evenly go out 2～4 millimeters greatly than the cross sectional shape of sizing area;
The inlet region 2 of said mould 1, sizing area 3, cone angle transition region 4 and outlet area 5 are each other by fillet R2 rounding off; The front end face fillet R5 rounding off of 2 front portions, said inlet region and said core rod 1; The rear end face fillet R10 rounding off of said outlet area 5 rear portions and said mould 1.
The inlet region 2 of said core rod 1 and the surface roughness of sizing area 3 are minute surface.
B, adopt the decortication extruding, because during hot extrusion, surface oxidation was serious when ingot casting was heated to high temperature, formed certain thickness oxide skin, these defectives flow in the extruded product along the dead band when extruding, crack, defectives such as peeling, the subcutaneous tail that contracts, folder ash.Moreover the planform of electrically connecting clamp is complicated, and the surface requirements precision is higher, can not strip off the skin with stretching, removes blemish; For ensuring the quality of products, adopt the decortication extruding, decortication thickness is 1.1～1.5mm, and decortication is complete.In addition, the decortication extruding does not have relatively between metal surface and the recipient inwall and slides the service life of having improved the recipient liner.
It is surplus to keep certain thickness pressure when c, hot extrusion; Adopt forward, flat-die extruding during extruding, exist violent friction during extruding between recipient inwall and the metal, cause flow of metal inhomogeneous; Copper sheet in the recipient and oxide etc. flow usually and lag behind, and part is brought into pushes latter stage.Simultaneously, there is the sub-fraction metal to flow hardly near die face, become dead-metal, this part dead-metal also can participate in flowing in extruding latter stage.Therefore, for overcoming above-mentioned dead-metal and copper sheet oxide etc. in the middle of extruding flows to extruded product latter stage, it is surplus to leave certain thickness pressure, and institute stays and presses surplus thickness is 30～35 millimeters.
D, cleaning recipient; Guarantee craft sanitary: will produce some copper sheets and oxide unavoidably during extruding; Copper sheet, oxide and greasy dirt fouls etc. in the recipient are involved in and form peeling, the subcutaneous tail that contracts, folder ash etc. in the extruded product, will clear up recipient before the extruding.General with the copper sheet after the inspection pad cleaning extruding; With cleaning greasy dirt, foul and oxides such as rags.Through this processing, avoid defective when extruding, to be rolled in the finished product, and generation of defects such as elimination or minimizing peeling, the subcutaneous tail that contracts, folder ash.
Extruding gained stretching blank is checked, as requested, the qualified pickling process that changes over to.Described pickling process is: after the extruding, formed certain thickness metal oxide (CuO, Cu on the surface of product
2O), be unfavorable for stretching, influence the quality of product.So, before stretching, must wash by sulfuric acid.And after the finished product annealing, product surface has also formed certain thickness metal oxide (CuO, Cu
2O) not only influence product surface quality, and influence the conductance of part, so behind the finished products, also must wash by sulfuric acid.Acid cleaning process parameter: 15% sulfuric acid, pickling 30 minutes.Product after the pickling is rinsed the residual acid of product surface well in hot water.
Do head, and the drawing die that processes is packed in the die sleeve of 5 tons of stretching-machines, pound tight mould, the extruded product of carrying out head is put into the suitable continuously elongated mould of said feedback wire clamp, electrically connecting clamp and cushion block shape be drawn into the finished product web; Continuously elongated technology has guaranteed quality, surface roughness, the dimensional tolerance of product.The pass reduction that stretches is 10%～20%.The one-off drawing finished product.Adopt the bigger rapeseed oil of viscosity as lubricant, making stretched claims to lubricate fully.Draw speed is: 10 meters～20 meters/minute.For preventing to draw the bump injury of product, add and to handle with care man-hour, meticulously operation.
With reference to Fig. 9, said drawing die cross-section structure is: the core rod 7 of this drawing die is monoblock type, and its inner-cavity structure is followed successively by from the feeding mouth to the discharging opening: lubricated deformed area 8, stretching sizing area 9, stretched oral region 10; Said stretching sizing area 9 enlarges to the two ends tapering and forms said lubricated deformed area 8 and stretched oral region 10; Equal and the said electrified high-speed railway feedback of the shape of cross section of said lubricated deformed area 8, stretching sizing area 9, stretched oral region 10 wire clamp, electrically connecting clamp and cushion block are identical with the geomery of the cross sectional shape size of the consistent and said stretching sizing area of the shape of profile shapes and said profile shapes.The cross sectional shape size or the cavity dimension of said sizing area are confirmed principle: contain dimensional tolerance and select lower deviation, contained size is selected the upper deviation for use.Guarantee the percentage elongation unanimity of cross section stretching everywhere and the life-span of prolongation mould.
The drawing die most important part is a sizing area, the sizing bandwidth, and tensile force is big, plays the aligning effect, and stretched product is straight, and sizing is narrow, and tensile force is little, and stretched material can occur bending and deformation.
The length of the stretching sizing area 9 of said core rod 7 is 4～10 millimeters, and the length of stretched oral region 10 is 5～10 millimeters.
The tapering of the lubricated deformed area 8 of said core rod 7 is 6 °～12 °, and the part that contacts with the material that stretches is the deformed area, is lubricated district with the discontiguous part of material; The cone angle of deformed area is big, and tensile force is big, and the deformed area cone angle is little, and the stretching blank can not get into die orifice.The tapering of stretched oral region 10 is 10 °～45 °.
8 front portions, lubricated deformed area of said core rod 7 and the front end face fillet R10 rounding off of said core rod 7; The rear end face fillet rounding off of stretched oral region 10 rear portions and said core rod 7.
The whole mold cavity surface roughness of said core rod 7 is a minute surface.
Product after the stretching is checked, the qualified machining operation that changes over to is carried out machining, operations such as sawing, chamfering, fraising.To machined piece inspection, the qualified annealing operation that changes over to; Annealing is adopted in the ammonia decomposing protection property atmosphere shaft (tower) furnace and is annealed annealing temperature: 550～600 ℃, and temperature retention time: 5 hours; Cool off with stove;
The protective gas annealing technology makes workpiece not produce oxidative phenomena.And can not produce secondary pollution, effects of energy saving and emission reduction is good.And can avoid the bump injury in the process.Guarantee surface quality of products, dimensional tolerance and form and position tolerance, saved the pickling process of finished product.
Because product quality requires high, the per pass operation must strict be pressed technological parameter processing; In the process, all to operate meticulously, handle with care.The per pass operation is done inspection on request to product, and substandard product is scrapped, and stops processing, and manpower and materials cut the waste.
Above-mentioned NM each operation is the common process in this area.
According to the present invention, can process product of the same type, produce profile shapes of the same type.Fig. 1 to Fig. 7 is the structural representation of the machinable profile shapes of part the present invention.
Claims (1)
1. an electrified high-speed railway is with the production technology of wire clamp and cushion block, and it is characterized in that: this technological process is: melting, semi-continuous casting → sawing ingot casting → inspection → eddy-current heating ingot casting → hot extrusion → inspection → pickling → clean → do head → stretching → inspection → finishing → sawing → boring → fraising → chamfering → protective gas annealing → cleaning → inspection → packing; Wherein:
In described melting, the semi-continuous casting operation, the cathode copper that adopts high-quality as raw material founding to go out ingot casting subsequent use; When founding, adopt the deoxidation of wooden carbon covering and heat insulating and add phosphorus and make deoxidier, charcoal toasted 4～5 hours in 600～800 ℃ of calcining furnaces before using;
In the described hot extrusion operation, adopt continuous hot-extrusion mold that said ingot casting is squeezed into the stretching blank, each parameter of hot extrusion is confirmed as follows:
The extrusion temperature of a, ingot casting is 800～850 ℃, and identical extrusion ratio 20～35 is adopted at each interface; Adopt high extruding force; Adopt lower extrusion speed, metal flow speed: 0.5～0.8 meter per second;
B, employing decortication extruding, decortication thickness: 1.1～1.5mm
It is surplus to keep certain thickness pressure when c, extruding, adopts forward, flat-die extruding during extruding, and institute stays and presses surplus thickness is 30～35 millimeters;
D, cleaning recipient, every extruding is once cleaned out copper sheet in the liner and oxide;
In the described stretching process, adopt continuous drawing die that said stretching blank is drawn into the finished product web; Each parameter that stretches is confirmed as follows: the pass reduction of stretching is 10%～20%, and the one-off drawing finished product adopts the bigger rapeseed oil of viscosity as lubricant, and draw speed is: 10 meters～20 meters/minute;
In the described protective gas annealing operation, adopt the annealing of ammonia decomposing protection property atmosphere, annealing temperature: 550～600 ℃, temperature retention time: 5 hours; Cool off with stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100838397A CN102615488A (en) | 2012-03-27 | 2012-03-27 | Production process of wire clamp and cushion block for electrification high-speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100838397A CN102615488A (en) | 2012-03-27 | 2012-03-27 | Production process of wire clamp and cushion block for electrification high-speed railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102615488A true CN102615488A (en) | 2012-08-01 |
Family
ID=46555877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100838397A Pending CN102615488A (en) | 2012-03-27 | 2012-03-27 | Production process of wire clamp and cushion block for electrification high-speed railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102615488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226709B (en) * | 2014-09-19 | 2016-05-25 | 长沙新振升集团有限公司 | High speed hot-extrusion mold |
| CN105817847A (en) * | 2016-05-30 | 2016-08-03 | 方雪锋 | Processing technology of middle flange of transmission shaft |
| CN106271407A (en) * | 2016-08-17 | 2017-01-04 | 杭州思欧机械有限公司 | A kind of air inlet cushion block and processing technique thereof |
-
2012
- 2012-03-27 CN CN2012100838397A patent/CN102615488A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 李新虎: "《高速铁路承力索电连接线夹的加工》", 《甘肃冶金》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226709B (en) * | 2014-09-19 | 2016-05-25 | 长沙新振升集团有限公司 | High speed hot-extrusion mold |
| CN105817847A (en) * | 2016-05-30 | 2016-08-03 | 方雪锋 | Processing technology of middle flange of transmission shaft |
| CN106271407A (en) * | 2016-08-17 | 2017-01-04 | 杭州思欧机械有限公司 | A kind of air inlet cushion block and processing technique thereof |
| CN106271407B (en) * | 2016-08-17 | 2018-02-27 | 杭州思欧机械有限公司 | A kind of air inlet cushion block and its processing technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1933037B (en) | Method for producing copper alloy contact wire with excellent comprehensive performance | |
| CN105551688A (en) | Preparation method of high-accuracy anaerobic bright copper bar | |
| CN106311788B (en) | A kind of production technology of Kufil section bar | |
| CN104342575B (en) | Electrified railway chromium-zirconium-copper contact line and machining process thereof | |
| CN102829657B (en) | Producing method of high temperature resistant sintered heat tube | |
| CN101259484A (en) | Scrap copper continuous casting and rolling low oxygen glitter copper lever production technology | |
| CN106238494B (en) | A kind of production technology of high strength copper alloy contact line | |
| CN102581061A (en) | Production method for seamless brass pipe | |
| CN102380518A (en) | New production process for producing oxygen-free transformer copper strip | |
| CN102615488A (en) | Production process of wire clamp and cushion block for electrification high-speed railway | |
| CN109248936A (en) | A kind of production method of the highly conductive copper rod of charging pile plug Cutting free | |
| CN104043943A (en) | Manufacturing process of cupronickel pipe | |
| CN106238493A (en) | A kind of production technology of wear-resistant copper alloyed contact line | |
| CN107475554A (en) | A kind of production technology of microalloy copper busbar | |
| CN106140863A (en) | A kind of production technology of copper tin alloy contact line | |
| CN108941980B (en) | Preparation method of welding wire for aluminum-magnesium alloy casting | |
| CN101172325A (en) | Method for producing angle pin casing tube | |
| CN108393370A (en) | A kind of battery plus-negative plate leading-out terminal copper bar material production technology | |
| CN100579710C (en) | Method for producing angle pin casing tube | |
| CN104561694B (en) | A kind of production method of the electric current transmission aluminium section bar of high strength heat resistant high conductivity | |
| CN106077125A (en) | A kind of production technology of pole coil copper section bar | |
| CN107414408A (en) | A kind of production method of transformer copper strips | |
| CN102615140A (en) | Preparation method of copper and copper alloy oval tube | |
| CN104867626A (en) | Production technology of cable | |
| CN104625652A (en) | Spinning drawing forming technology of oval convergent pipe and spinning device for spinning drawing forming technology of oval convergent pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120801 |