CN103693020B - The wear-resistant thickening of EMUs grinds sub-production technology - Google Patents
The wear-resistant thickening of EMUs grinds sub-production technology Download PDFInfo
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Abstract
The present invention relates to a kind of under the premise not changing the existing EMUs formula of grinding, by the improvement to its processing technology, the wear-resistant thickening of EMUs that base has viscosity building characteristic is made to grind sub-production technology, sub-production technology is ground including motor-car, grind on the basis of sub-production technology at existing motor-car: technological parameter during hot pressing is: the pressure >=35Mpa of goods, hot pressing temperature controls 150 ± 10 DEG C, pressurize latter 45 seconds and exit for the first time, pressurize is exitted after 25 seconds for the second time, situation according to compound, third time venting can be carried out, exit complete after, pressurize allows compound fully solidify in 10 minutes, then goods depanning, product examination, next process is proceeded to after qualified；Heat treatment, stable, the dimensionally stable for the guarantee sub-properties of product of grinding, hot pressing completes later product and has to pass through baking oven heat treatment, heat treatment condition is: temperature 150 ± 5 DEG C, and constant temperature 5 hours is warmed up to 180 ± 5 DEG C, constant temperature 4 hours, etc. naturally cooling to after below 60 DEG C, oven door can be opened, carry out next step operation.
Description
Technical field
The present invention relates to a kind of under the premise not changing the existing EMUs formula of grinding, by the improvement to its processing technology, make the wear-resistant thickening of EMUs that base has viscosity building characteristic grind sub-production technology, belong to motor-car and grind sub-manufacture field.
Background technology
CN103267075A, title " a kind of ion type rareearth slag is as the vehicle brake-holder block of inserts ", count by weight percentage, ion type rareearth slag 10～15%, mineral fibres 20～30%, binding agent 10～15%, graphite 15～25%, high-temperature agglomerant 2～5%, aramid fiber fortifying fibre 1～3%, increase and rub material 5～10%, to adopting ultrasonic Treatment, mechanical activation particle surface after ion type rareearth slag, mineral fibres, the uniform batch mixing of graphite raw material, strengthen intergranular contact force；Then brake(-holder) block is become with the repressed molding heat treatment for solidification of all the other mixing raw materials again.Its weak point: due to the restriction by processing technology, its wearability is undesirable.
Summary of the invention
Purpose of design: avoid the weak point in background technology, designs a kind of under the premise not changing the existing EMUs formula of grinding, by the improvement to its processing technology, makes the wear-resistant thickening of EMUs that base has viscosity building characteristic grind sub-production technology.
Design: in order to realize above-mentioned purpose of design.The present invention is in technological design: 1, under the premise not changing the existing EMUs main body formula of grinding, in order to obtain good frictional behaviour, binding agent, based on thermoplastic phenolic resin, with the addition of the design of 5-8% nitrile rubber powder in binding agent, is one of the technical characteristic of the present invention.The purpose of do so is in that: the elastic modelling quantity having due to nitrile rubber powder contributes to reducing wheel heat damage, improving impact flexibility, but addition can not exceed its upper limit, otherwise directly affect the coefficient of friction grinding son and tackifying, the application is through a large amount of tests repeatedly, the addition of nitrile rubber powder is controlled in the scope of 5-8%, wheel heat damage can be efficiently reduced, improve the toughness of wheel, the thickening property grinding son will not be reduced again.2, select metal iron powder filler to be master, bauxite be the design of auxiliary constituted mixed fillers, be the present invention technical characteristic two.The purpose of do so is in that: all closely related with the kind of filler and consumption owing to grinding the cleaning effect of son, wear rate size, heat resistanceheat resistant decline performance, brake noise and the cleaning stability under having oil and water condition, the application finds through lot of experiments: at binding agent based on thermoplastic phenolic resin and under the premise adding 5-8% nitrile rubber powder, select metal iron powder filler to be master, bauxite be auxiliary constituted mixed fillers, its wear-resistant thickening property is best, but the addition of bauxite must less than 5%.3, hot pressing pressure selects at >=35Mpa, and hot pressing temperature controls 150 ± 10 DEG C and hot pressing completes later product and has to pass through the heat treated design of baking oven, be the present invention technical characteristic three.The purpose of do so is in that: will improve the abrasiveness grinding son, not only dispensing is crucial, and can the selection of the match parameter between hot pressing pressure and heat treatment temperature be related to its dispensing performance especially and reach the key of optimum, found by substantial amounts of test for this application, under the premise of the reasonable science of dispensing, the selection of above-mentioned hot pressing pressure mates, with heat treatment temperature, the raising making the wear-resistant tackifying of grinding obtain essence.
Technical scheme: a kind of wear-resistant thickening of EMUs grinds sub-production technology, sub-production technology is ground including motor-car, grind on the basis of sub-production technology at existing motor-car: (1) weighing, according to the products thickness grinding sub-product, calculating and grind sub-product materials weight, measure with 10kg × 5g counter scale, weighing apparatus is calibrated, accurately according to grinding the requirement weighing of the sub-production schedule, all compounds are all put in mould；(2) hot pressing, it is uniformly added into compound, accurately put composition of backboards part well, compound is not made to fly upward out, closed die lid is suppressed, technological parameter during hot pressing is: the pressure >=35Mpa of goods, and hot pressing temperature controls 150 ± 10 DEG C, latter 45 seconds first times venting of pressurizeing, pressurize is exitted after 25 seconds for the second time, situation according to compound, it is possible to carry out third time venting, exit complete after, pressurize allows compound fully solidify in 10 minutes, then goods depanning, product examination, proceed to next process after qualified；(3) heat treatment, stable, the dimensionally stable for the guarantee sub-properties of product of grinding, hot pressing completes later product and has to pass through baking oven heat treatment, heat treatment condition is: temperature 150 ± 5 DEG C, and constant temperature 5 hours is warmed up to 180 ± 5 DEG C, constant temperature 4 hours, etc. naturally cooling to after below 60 DEG C, oven door can be opened, carry out next step operation；(4) performance detection, visual examination, through the sub-product of heat treated grinding, carry out comprehensive visual examination, as found, product has crackle, corner to lack the problems such as material, should choose in time and scrap, each batch products, take and wherein a piece of be ground sub-service check, test including friction and wear behavior, intensity, hardness, density etc., after qualified, proceed to next process；(5) surface plastic spraying and visual examination, surface plastic spraying operation needs cooperation processing, it is desirable to plastic-blasting thickness less than 0.007mm, baking temperature less than 190 DEG C, plastic-blasting rear surface gloss, solid colour, bubble-free, skinning.
The present invention is compared with background technology, under the premise not changing the existing EMUs main body formula of grinding, makes the wear-resistant thickening property of grinding be greatly improved.
Detailed description of the invention
Embodiment 1: a kind of wear-resistant thickening of EMUs grinds sub-production technology, sub-production technology is ground including motor-car, grind on the basis of sub-production technology at existing motor-car: (1) weighing, according to the products thickness grinding sub-product, calculating and grind sub-product materials weight, measure with 10kg × 5g counter scale, weighing apparatus is calibrated, accurately according to grinding the requirement weighing of the sub-production schedule, all compounds are all put in mould；(2) hot pressing, it is uniformly added into compound, accurately put composition of backboards part well, compound is not made to fly upward out, closed die lid is suppressed, technological parameter during hot pressing is: the pressure >=35Mpa of goods, and hot pressing temperature controls 150 ± 10 DEG C, latter 45 seconds first times venting of pressurizeing, pressurize is exitted after 25 seconds for the second time, situation according to compound, it is possible to carry out third time venting, exit complete after, pressurize allows compound fully solidify in 10 minutes, then goods depanning, product examination, proceed to next process after qualified；(3) heat treatment, stable, the dimensionally stable for the guarantee sub-properties of product of grinding, hot pressing completes later product and has to pass through baking oven heat treatment, heat treatment condition is: temperature 150 ± 5 DEG C, and constant temperature 5 hours is warmed up to 180 ± 5 DEG C, constant temperature 4 hours, etc. naturally cooling to after below 60 DEG C, oven door can be opened, carry out next step operation；(4) performance detection, visual examination, through the sub-product of heat treated grinding, carry out comprehensive visual examination, as found, product has crackle, corner to lack the problems such as material, should choose in time and scrap, each batch products, take and wherein a piece of be ground sub-service check, test including friction and wear behavior, intensity, hardness, density etc., after qualified, proceed to next process；(5) surface plastic spraying and visual examination, surface plastic spraying operation needs cooperation processing, it is desirable to plastic-blasting thickness less than 0.007mm, baking temperature less than 190 DEG C, plastic-blasting rear surface gloss, solid colour, bubble-free, skinning.
Wear-resistant thickening grinds sub-performance requirement:
(1) friction temperature degree is when 100 DEG C, coefficient of friction (u) 0.40 ± 0.15, wear rate 10-7cm3/ (N.m)≤10.0；
(2) friction temperature degree is when 150 DEG C, coefficient of friction 0.40 ± 0.15, wear rate 10-7cm3/ (N.m)≤12.0；
(3) product hardness HRL50-90, density is 4.00 ± 0.15g/cm3；
(4) product bending strength 25 ± 5Mpa；Maximum strain >=0.02mm/mm.
Example: grind son and be made up of two parts: back board module and abrasion body.
(1) the sub-technological process of production is ground:
Grind the production of son without asbestos, adopt dry process to produce, assemble through steel backing, the preparation of compound, hot-forming, heat treatment complete.Specific as follows:
Qualified steel plate → stamping-out cuts → welding assembly → steel backing check on surface treatment
Qualified raw material → dispensing A → dispensing B → add the mixing → hot pressing such as steel fibre → heat treatment → service check → plastic-blasting → appearance test → qualified vanning.
(2) technology point:
1, backboard:
Steel plate materials: material is cold forming cold-rolling mild steel plate and steel band, meets chemical composition and the mechanical property requirements of Q/WG (LZ) 20-2007-DOC04-A-PT.A-PF.A, and steel plate thickness is 3mm, and surface of steel plate answers smooth, non-corroding.
2, backboard stamping-out:
The cutting size of classifying rationally backboard each several part, considers the saving of material as far as possible, removes the oil stain on surface, puts in place according to operation stamping-out respectively, deburring, and bending, shaping are assembled into back board module.
3, welding:
Hook on backboard needs tow sides to carry out gas shielded welding, and pad should be smooth, full, without rosin joint.
4, gluing:
On the faying face of back board module and abrasion body material, binding agent on even application, naturally dries, notes preventing foreign material to be bonded at surface.
5, abrasion body material:
(1) raw material: raw-material supplier must be qualified supplier, grind the various raw materials needed for son produces to purchase in strict accordance with determined manufacturer, name of product and model when developing, after raw material arrival, need to carry out the inspection of necessity, it is ensured that raw material meets index request.
(2) dispensing: measure with 50kg × 50g platform balance, 10kg × 5g counter scale, weighing apparatus is calibrated, and checks raw material by " formula list ".The quantity specified in strict accordance with " the formula list " that grind sub-product carries out weighing, and weighing error ranges for coarse fodder: ± 0.1kg, fines: ± 0.005kg.
Different materials combination holds with different containers respectively, and raw material is checked before terminating by dispensing, carries out mark simultaneously, does the cleaning of surrounding well.
The same day dispensing, the general same day mix, dispensing was deposited less than 3 days in principle.
(3) mixing: check the state of batch mixer, the feed bin of cleaning batch mixer, it is ensured that batch mixer is working properly before mixing.
During batch mixing, feed intake according to the input order of first coarse fodder, rear fines, close feeding chamber behind the door, start mixing.One pot of material incorporation time is generally no less than 30 minutes.
After batch mixer stop rotates several minutes put can discharging, avoid the dust from flying of material as far as possible.Compound should in sealing, dry, lucifuge place preservation, it is to avoid too much contacts with air, avoid sunlight direct irradiation, avoid rainwater pouring etc..Compound should make to be finished in 6 days, as the resting period exceedes regulation, it is necessary to carries out little sample testing, verify qualified after could use, otherwise scrap process.
6, son is ground:
(1) weighing
According to the products thickness grinding sub-product, calculate and grind sub-product materials weight.Measuring with 10kg × 5g counter scale, weighing apparatus is calibrated.Accurately according to grinding the requirement weighing of the sub-production schedule, all compounds are all put in mould.
(2) hot pressing
Being uniformly added into compound, accurately put composition of backboards part well, note not making compound fly upward out, closed die lid is suppressed.Technological parameter during hot pressing is: the pressure >=35Mpa of goods, and hot pressing temperature controls 150 ± 10 DEG C, latter 45 seconds first times venting of pressurizeing, and pressurize is exitted after 25 seconds for the second time, the situation according to compound, it is possible to carry out third time venting.Exit complete after, pressurize allows compound fully solidify in 10 minutes, then goods depanning, and product examination proceeds to next process after qualified.
(3) heat treatment
Stable, the dimensionally stable for the guarantee sub-properties of product of grinding, hot pressing completes later product and has to pass through baking oven heat treatment, and heat treatment condition is: temperature 150 ± 5 DEG C, and constant temperature 5 hours is warmed up to 180 ± 5 DEG C, constant temperature 4 hours.Etc. naturally cooling to after below 60 DEG C, oven door can be opened, carry out next step operation.
(4) performance detection, visual examination
Through the sub-product of heat treated grinding, carrying out comprehensive visual examination, as found, product has crackle, corner to lack the problems such as material, should choose in time and scrap.Each batch products, takes and wherein a piece of is ground sub-service check.Test including friction and wear behavior, intensity, hardness, density etc.；Next process is proceeded to after qualified.
(5) surface plastic spraying and visual examination
Surface plastic spraying operation needs cooperation processing, it is desirable to plastic-blasting thickness is less than 0.007mm, and baking temperature is less than 190 DEG C.Plastic-blasting rear surface gloss, solid colour, bubble-free, skinning.
(6) impress
Whether the mark checked on marking mould is consistent with product.Marking mould is placed on product by deployed stamp-pad ink, with scraper plate, stamp-pad ink is coated with and is scraped on mark mould, makes mark be imprinted on product.
The product produced neatly is overlayed appointment position.Clean die.
(7) qualified vanning
The product checked neatly is put into carton by the specification of regulation, quantity on packing crates.Fill in quality certification related content, including specification, material, the date of inspection and lot number etc..Carton seals.
Pack and indicate material and user's name, by packed product warehousing.
It is to be understood that: although the word that the mentality of designing of the present invention is contrasted detailed by above-described embodiment describes; but these words describe; simply the simple text of mentality of designing of the present invention is described; rather than the restriction to mentality of designing of the present invention; any without departing from the combination of mentality of designing of the present invention, increase or amendment, each fall within protection scope of the present invention.
Claims (1)
1. the wear-resistant thickening of EMUs grinds a sub-production technology, grinds sub-production technology including EMUs, it is characterized in that:
(1) weighing
According to the products thickness grinding sub-product, calculating and grind sub-product materials weight, measure with 10kg × 5g counter scale, weighing apparatus is calibrated, and accurately requires weighing according to the sub-production schedule of grinding, is all put in mould by all compounds；
(2) hot pressing
It is uniformly added into compound, accurately puts composition of backboards part well, do not make compound fly upward out, closed die lid is suppressed, and technological parameter during hot pressing is: the pressure >=35Mpa of goods, and hot pressing temperature controls 150 ± 10 DEG C, pressurizeing latter 45 seconds and exit for the first time, pressurize is exitted after 25 seconds for the second time, the situation according to compound, third time venting can be carried out, exit complete after, pressurize allows compound fully solidify in 10 minutes, then goods depanning, product examination, proceeds to next process after qualified；
(3) heat treatment
Stable, the dimensionally stable for the guarantee sub-properties of product of grinding, hot pressing completes later product and has to pass through baking oven heat treatment, heat treatment condition is: temperature 150 ± 5 DEG C, constant temperature 5 hours, it is warmed up to 180 ± 5 DEG C, constant temperature 4 hours, waits and naturally cools to after below 60 DEG C, oven door can be opened, carry out next step operation；
(4) performance detection, visual examination
Through the sub-product of heat treated grinding, carry out comprehensive visual examination, as found, product has crackle, corner to lack material problem, should choose in time and scrap, each batch products, take and wherein a piece of be ground sub-service check, including friction and wear behavior, intensity, hardness, density test, after qualified, proceed to next process；
(5) surface plastic spraying and visual examination
Surface plastic spraying operation needs cooperation processing, it is desirable to plastic-blasting thickness less than 0.007mm, baking temperature less than 190 DEG C, plastic-blasting rear surface gloss, solid colour, bubble-free, skinning, its wear-resistant thickening grind sub-performance reach following requirement:
1. friction temperature degree is when 100 DEG C, coefficient of friction (u) 0.40 ± 0.15, wear rate≤10.0, and the unit of wear rate is 10-7cm3/(N.m)；
2. friction temperature degree is when 150 DEG C, coefficient of friction 0.40 ± 0.15, wear rate≤12.0, and the unit of wear rate is 10-7cm3/(N.m)；
3. product hardness HRL50-90, density is 4.00 ± 0.15g/cm3；
4. product bending strength 25 ± 5Mpa；Maximum strain >=0.02mm/mm.
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| CN108359212B (en) * | 2018-01-31 | 2021-01-01 | 长春昌博众邦轨道交通科技有限公司 | Grinder for rail vehicle and preparation method thereof |
| CN108839640B (en) * | 2018-05-07 | 2021-07-02 | 度特斯(大连)实业有限公司 | Grinder for high-speed motor train unit and preparation method thereof |
| CN109534731B (en) * | 2018-12-09 | 2022-08-30 | 马鞍山市雷狮轨道交通装备有限公司 | Deoiling grinds son for track traffic |
| CN109369083B (en) * | 2018-12-09 | 2022-02-11 | 马鞍山市雷狮轨道交通装备有限公司 | Rounding grinder for rail transit |
| CN109574561B (en) * | 2018-12-09 | 2022-02-11 | 马鞍山市雷狮轨道交通装备有限公司 | Preparation method of rounding and grinding mill for rail transit |
| CN111942330B (en) * | 2019-05-17 | 2021-12-14 | 常州中车铁马科技实业有限公司 | Shape-correcting grinder and manufacturing method thereof |
| CN113001104A (en) * | 2019-12-22 | 2021-06-22 | 深圳市新盛机器人有限公司 | Special construction method for robot body |
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| JPS62139745A (en) * | 1985-12-16 | 1987-06-23 | Akebono Brake Res & Dev Center Ltd | Step surface cleaner for vehicle |
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| CN102432978A (en) * | 2011-08-17 | 2012-05-02 | 中国铁道科学研究院金属及化学研究所 | Grinder of bullet train tread cleaner and production method thereof |
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Address after: 311106 Industrial Zone, Tangqi Town, Yuhang District, Zhejiang, Hangzhou Applicant after: ZHEJIANG KETE AUTO PARTS CO., LTD. Address before: 311106 Industrial Zone, Tangqi Town, Yuhang District, Zhejiang, Hangzhou Applicant before: Zhejiang Kete Auto Parts Co., Ltd. |
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