CN103693020A - Production technology of CRH (China Railway High-speed) train anti-wear and viscosity-increasing grinding ball - Google Patents
Production technology of CRH (China Railway High-speed) train anti-wear and viscosity-increasing grinding ball Download PDFInfo
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Abstract
The invention relates to a production technology of a CRH (China Railway High-speed) train anti-wear and viscosity-increasing grinding ball, which enables a CRH train grinding ball to have a viscosity-increasing characteristic through the improvement on the manufacturing technology of the CRH train grinding wall on the premise that a recipe of an existing CRH train grinding ball is not changed. On the basis of the production technology of an existing CRH train grinding ball, the production technology of the CRH train anti-wear and viscosity-increasing grinding ball is characterized by comprising the steps of hot pressing: technological parameters during the hot pressing are that the pressure of a product is larger than or equal to 35MPa and the hot pressing temperature is controlled to be 150+/-10 DEG C, first air bleeding can be carried out after pressurization is carried out by 45 seconds, second air bleeding can be carried out after pressure maintaining is carried out by 25 seconds, third air bleeding can be carried out according to the situation of mixture, the mixture is enabled to be fully solidified by carrying out the 10-minute pressure maintaining after the air bleeding is completed, the product can be removed from a mold, the product can be detected, and the product can be shifted into the next procedure after the product is detected to be qualified; heat treatment: the product after the hot pressing must be subjected to heat treatment through an oven in order to ensure the performance stability and the size stability of a grinding ball product, the heat treatment can be carried out under the conditions that 5-hour constant-temperature treatment can be carried out when the temperature is controlled to be 150+/-5 DEG C, 4-hour constant-temperature treatment can be carried out when the temperature rises to 180+/-5 DEG C, a door of the oven can be opened when the temperature is naturally cooled to be below 60 DEG C, and the next operation can be carried out.
Description
Technical field
The present invention relates to a kind of change under the prerequisite of existing motor train unit grinding formula, by the improvement to its manufacture craft, the wear-resistant tackify of motor train unit that makes base have tackify characteristic grinds sub-production technology, belongs to motor-car and grinds sub-manufacture field.
Background technology
CN103267075A, title " a kind of ion type rareearth slag of using is as the vehicle brake-holder block of Charge ", count by weight percentage, ion type rareearth slag 10～15%, mineral fibres 20～30%, adhesive agent 10～15%, graphite 15～25%, high-temperature agglomerant 2～5%, aramid fiber fortifying fibre 1～3%, increase the material 5～10% that rubs, to adopting after ion type rareearth slag, mineral fibres, the even batch mixing of graphite raw material, super sonic is processed, mechanical activation particle surface, strengthens intergranular contact force; And then become brake plate with the repressed moulding heat treatment for solidification of all the other mixing raw materials.Its weak point: owing to being subject to the restriction of manufacture craft, its resistance to abrasion is undesirable.
Summary of the invention
Design goal: avoid the weak point in background technology, design a kind of change under the prerequisite of existing motor train unit grinding formula, by the improvement to its manufacture craft, the wear-resistant tackify of motor train unit that makes base have tackify characteristic grinds sub-production technology.
Design plan: in order to realize above-mentioned design goal.The present invention is in technological design: 1, grind under the prerequisite of sub-main body formula not changing existing motor train unit, in order to obtain good frictional behaviour, adhesives be take novolac resin as main, has added the design of 5-8% nitrile rubber powder in adhesives, is one of technical characterictic of the present invention.The object of doing is like this: the modulus of elasticity having due to nitrile rubber powder contributes to reduce wheel heat damage, improves dynamic ductility, but addition can not exceed its upper limit, otherwise directly sub coefficient of friction and tackifying are ground in impact, the application is through a large amount of tests repeatedly, the addition of nitrile rubber powder is controlled in the scope of 5-8%, the toughness that can effectively reduce wheel heat damage, raising wheel, can not reduce again and grind sub thickening property.2, selecting metal iron powder filler is that master, bauxite are the design of auxiliary formed mixed fillers, is two of technical characterictic of the present invention.The object of doing is like this: owing to grinding sub cleaning effect, abrasion factor size, heat resistanceheat resistant decline performance, brake noise and having the cleaning stability under oil and water condition all closely related with kind and the consumption of filler, the application finds through lot of experiments: at adhesives, take novolac resin under the prerequisite of main and interpolation 5-8% nitrile rubber powder, selecting metal iron powder filler is that master, bauxite are auxiliary formed mixed fillers, its wear-resistant thickening property is best, but the addition of bauxite must be less than 5%.3, be chosen in >=35 Mpa of hot pressing pressure, it must, through the design of baking oven hot-cured, be three of technical characterictic of the present invention that 150 ± 10 ℃ of hot pressing temperature controls and hot pressing complete later product.The object of doing is like this: improve and grind sub abrasive property, not only batching is crucial, and the selection of the matching parameter between hot pressing pressure and heat treatment temperature is related to the key that can its batching performance reach optimum value especially, the application finds by a large amount of tests for this reason, under the prerequisite of the reasonable science of batching, the selection of above-mentioned hot pressing pressure makes to grind with mating of heat treatment temperature the raising that sub wear-resistant tackifying has obtained essence.
Technical scheme: the wear-resistant tackify of a kind of motor train unit grinds sub-production technology, comprise that motor-car grinds sub-production technology, at existing motor-car, grind on the basis of sub-production technology: (1) weighing, according to the products thickness of grinding sub-product, calculate and grind sub-product materials weight, with 10kg * 5g counter scale, measure, weighing apparatus calibration, accurately according to grinding sub-manufacturing program, require weighing, all mixtures are all put in mould; (2) hot pressing, evenly add mixture, accurately put composition of backboards part well, do not make mixture fly upward out, closed die lid is suppressed, technological parameter during hot pressing is: pressure >=35 Mpa of goods, and hot pressing temperature is controlled 150 ± 10 ℃, the venting for the first time in latter 45 seconds of pressurizeing, pressurize is venting for the second time after 25 seconds, according to the situation of mixture, can exit for the third time, exit complete after, pressurize allows mixture fully curing for 10 minutes, then goods depanning, examination of product, proceeds to next process after qualified; (3) heat treatment, for guaranteeing that the sub-properties of product of grinding are stable, dimensionally stable, hot pressing completes later product must pass through baking oven heat treatment, heat-treat condition is: 150 ± 5 ℃ of temperature, and constant temperature 5 hours, is warmed up to 180 ± 5 ℃, constant temperature 4 hours, Deng naturally cool to 60 ℃ following after, can open oven door, carry out next step operation; (4) Performance Detection, exterior check, through hot-cured, grind sub-product, carry out comprehensive exterior check, as found, product has crackle, corner to lack the problems such as material, should choose and scrap in time, each batch products, gets wherein a slice and grinds sub-service check, comprise the tests such as friction and wear behavior, intensity, hardness, density, proceed to next process after qualified; (5) surface plastic spraying and exterior check, surface plastic spraying operation needs cooperation processing, requires plastic-blasting thickness to be no more than 0.007mm, and bake out temperature is no more than 190 ℃, and plastic-blasting rear surface gloss, solid colour, without bubble, skinning.
The present invention compares with background technology, grinds under the prerequisite of sub-main body formula not changing existing motor train unit, and the wear-resistant thickening property that grinds son is greatly improved.
The specific embodiment
Embodiment 1: the wear-resistant tackify of a kind of motor train unit grinds sub-production technology, comprise that motor-car grinds sub-production technology, at existing motor-car, grind on the basis of sub-production technology: (1) weighing, according to the products thickness of grinding sub-product, calculate and grind sub-product materials weight, with 10kg * 5g counter scale, measure, weighing apparatus calibration, accurately according to grinding sub-manufacturing program, require weighing, all mixtures are all put in mould; (2) hot pressing, evenly add mixture, accurately put composition of backboards part well, do not make mixture fly upward out, closed die lid is suppressed, technological parameter during hot pressing is: pressure >=35 Mpa of goods, and hot pressing temperature is controlled 150 ± 10 ℃, the venting for the first time in latter 45 seconds of pressurizeing, pressurize is venting for the second time after 25 seconds, according to the situation of mixture, can exit for the third time, exit complete after, pressurize allows mixture fully curing for 10 minutes, then goods depanning, examination of product, proceeds to next process after qualified; (3) heat treatment, for guaranteeing that the sub-properties of product of grinding are stable, dimensionally stable, hot pressing completes later product must pass through baking oven heat treatment, heat-treat condition is: 150 ± 5 ℃ of temperature, and constant temperature 5 hours, is warmed up to 180 ± 5 ℃, constant temperature 4 hours, Deng naturally cool to 60 ℃ following after, can open oven door, carry out next step operation; (4) Performance Detection, exterior check, through hot-cured, grind sub-product, carry out comprehensive exterior check, as found, product has crackle, corner to lack the problems such as material, should choose and scrap in time, each batch products, gets wherein a slice and grinds sub-service check, comprise the tests such as friction and wear behavior, intensity, hardness, density, proceed to next process after qualified; (5) surface plastic spraying and exterior check, surface plastic spraying operation needs cooperation processing, requires plastic-blasting thickness to be no more than 0.007mm, and bake out temperature is no more than 190 ℃, and plastic-blasting rear surface gloss, solid colour, without bubble, skinning.
Wear-resistant tackify grinds sub-performance requriements:
(1) friction temperature degree is in the time of 100 ℃, friction coefficient (u) 0.40 ± 0.15, abrasion factor 10-7cm3/ (N.m)≤10.0;
(2) friction temperature degree is in the time of 150 ℃, friction coefficient 0.40 ± 0.15, abrasion factor 10-7cm3/ (N.m)≤12.0;
(3) product hardness HRL 50-90, density is 4.00 ± 0.15g/cm
3;
(4) product bending strength 25 ± 5Mpa; Maximum strain >=0.02 mm/mm.
Example: grind son and formed by two parts: back board module and abrasion body.
(1) grind the sub-technological process of production:
Without asbestos, grind sub production, adopt dry process to produce, through the preparation of steel backing assembling, mixture, hot-forming, heat treatment, complete.Specific as follows:
Cut → welding assembly → steel backing of qualified steel plate → stamping-out check on surface treatment
Qualified raw MAT'L → batching A → batching B → the add mixing → hot pressing → heat treatment → service check → plastic-blasting → visual testings such as steel fiber → qualified vanning.
(2) technology point:
1, backboard:
Steel plate materials: material is cold-rolling mild steel plate and steel band for cold shaping, meets chemical composition and the mechanical characteristics requirement of Q/WG (LZ) 20-2007-DOC04-A-PT.A-PF.A, and steel plate thickness is 3mm, and surface of steel plate is answered smooth, non-corroding.
2, backboard stamping-out:
The cutting size of classifying rationally backboard each several part is considered the saving of material as far as possible, removes surperficial oil stain, according to operation respectively stamping-out put in place, removal of burrs, crooked, shaping, is assembled into back board module.
3, welding:
Hook on backboard needs tow sides to carry out gas shielded welding, and weld nugget should be smooth, full, without rosin joint.
4, gluing:
On the faying face of back board module and abrasion body material, evenly the upper adhesive agent of spraying, dries naturally, notes preventing that foreign material are bonded at surface.
5, abrasion body material:
(1) raw MAT'L: raw-material supplier must be qualified supplier, grind son produce required various raws MAT'L must be in strict accordance with exploitation time determined manufacturer, name of product and model purchase, after raw MAT'L arrival, need to carry out necessary check, guarantee that raw MAT'L meets index request.
(2) batching: measure with 50kg * 50g platform balance, 10kg * 5g counter scale, weighing apparatus is calibrated, checks raw material by < < single > > that fills a prescription.In strict accordance with the fill a prescription quantity of single > > regulation of the < < that grinds sub-product, carry out weighing, weighing error scope is coarse fodder: ± 0.1kg, fines: ± 0.005kg.
Different materials combination holds with different containers respectively, and batching finishes front raw MAT'L to be checked, and carries out sign simultaneously, does cleaning of surrounding environment well.
The same day, batching, generally mixed the same day, and batching is deposited and is no more than 3 days in principle.
(3) mix: before mixing, check the state of batch mixer, the feed bin of clean batch mixer, guarantees that batch mixer is working properly.
During batch mixing, according to the input order of first coarse fodder, rear fines, feed intake, close feeding chamber behind the door, start to mix.One pot of material incorporation time is generally no less than 30 minutes.
After batch mixer stop rotates, within several minutes, putting can discharging, avoids the dust from flying of material as far as possible.Mixture should, in sealing, dry, lucifuge place preservation, be avoided too much contacting, avoiding sunlight direct irradiation with air, avoid rainwater pouring etc.Mixture should use in 6 days, as the resting period surpasses regulation, need to carry out little sample testing, verified after qualified and could use otherwise scrap processing.
6, grind son:
(1) weighing
According to the products thickness of grinding sub-product, calculate and grind sub-product materials weight.With 10kg * 5g counter scale, measure weighing apparatus calibration.Accurately according to grinding sub-manufacturing program, require weighing, all mixtures are all put in mould.
(2) hot pressing
Evenly add mixture, accurately put composition of backboards part well, note not making mixture fly upward out, closed die lid is suppressed.Technological parameter during hot pressing is: pressure >=35 Mpa of goods, and hot pressing temperature is controlled 150 ± 10 ℃, the venting for the first time in latter 45 seconds of pressurizeing, pressurize is venting for the second time after 25 seconds, according to the situation of mixture, can exit for the third time.Exit complete after, pressurize allows mixture fully curing for 10 minutes, then goods depanning, examination of product, proceeds to next process after qualified.
(3) heat treatment
For guaranteeing that the sub-properties of product of grinding are stable, dimensionally stable, hot pressing completes later product must pass through baking oven heat treatment, and heat-treat condition is: 150 ± 5 ℃ of temperature, constant temperature 5 hours, is warmed up to 180 ± 5 ℃, constant temperature 4 hours.Deng naturally cool to 60 ℃ following after, can open oven door, carry out next step operation.
(4) Performance Detection, exterior check
Through hot-cured, grind sub-product, carry out comprehensive exterior check, as found, product has crackle, corner to lack the problems such as material, should choose and scrap in time.Each batch products, gets wherein a slice and grinds sub-service check.Comprise the tests such as friction and wear behavior, intensity, hardness, density; After qualified, proceed to next process.
(5) surface plastic spraying and exterior check
Surface plastic spraying operation needs cooperation processing, requires plastic-blasting thickness to be no more than 0.007mm, and bake out temperature is no more than 190 ℃.Plastic-blasting rear surface gloss, solid colour, without bubble, skinning.
(6) impress
Check whether the sign on marking mould conforms to product.Deployed stamp-pad ink is placed on marking mould on product, with scraper plate, stamp-pad ink is coated with and is scraped on sign mould, and sign is imprinted on product.
The product producing is neatly overlayed to assigned address.Clean die.
(7) qualified vanning
The product of having checked is neatly put into carton by the specification of stipulating on packing chest, quantity.Fill in certification of fitness related content, comprise specification, material, date of survey and lot number etc.Carton sealing.
Pack and indicate material and user's name, by packed product warehousing.
It is to be understood that: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just 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 combination, increase or modification that does not exceed mentality of designing of the present invention, all falls within the scope of protection of the present invention.
Claims (2)
1. the wear-resistant tackify of motor train unit grinds a sub-production technology, comprises that motor train unit grind sub-production technology, it is characterized in that grinding on the basis of sub-production technology at existing motor-car:
(1) weighing
According to the products thickness of grinding sub-product, calculate and grind sub-product materials weight, with 10kg * 5g counter scale, to measure, weighing apparatus calibration, accurately requires weighing according to grinding sub-manufacturing program, and all mixtures are all put in mould;
(2) hot pressing
Evenly add mixture, accurately put composition of backboards part well, do not make mixture fly upward out, closed die lid is suppressed, and technological parameter during hot pressing is: pressure >=35 Mpa of goods, and hot pressing temperature is controlled 150 ± 10 ℃, pressurize and exit for the first time for latter 45 seconds, pressurize is venting for the second time after 25 seconds, according to the situation of mixture, can exit for the third time, exit complete after, pressurize allows mixture fully curing for 10 minutes, then goods depanning, examination of product, proceeds to next process after qualified;
(3) heat treatment
For guaranteeing that the sub-properties of product of grinding are stable, dimensionally stable, hot pressing completes later product must pass through baking oven heat treatment, heat-treat condition is: 150 ± 5 ℃ of temperature, constant temperature 5 hours, be warmed up to 180 ± 5 ℃, constant temperature 4 hours, wait naturally cool to 60 ℃ following after, can open oven door, carry out next step operation;
(4) Performance Detection, exterior check
Through hot-cured, grind sub-product, carry out comprehensive exterior check, as found, product has crackle, corner to lack the problems such as material, should choose and scrap in time, each batch products, get wherein a slice and grind sub-service check, comprise the tests such as friction and wear behavior, intensity, hardness, density, proceed to next process after qualified;
(5) surface plastic spraying and exterior check
Surface plastic spraying operation needs cooperation processing, requires plastic-blasting thickness to be no more than 0.007mm, and bake out temperature is no more than 190 ℃, and plastic-blasting rear surface gloss, solid colour, without bubble, skinning.
2. the wear-resistant tackify of motor train unit according to claim 1 grinds sub-production technology, it is characterized in that wear-resistant tackify grinds sub-performance requriements:
(1) friction temperature degree is in the time of 100 ℃, friction coefficient (u) 0.40 ± 0.15, abrasion factor 10-7cm3/ (N.m)≤10.0;
(2) friction temperature degree is in the time of 150 ℃, friction coefficient 0.40 ± 0.15, abrasion factor 10-7cm3/ (N.m)≤12.0;
(3) product hardness HRL 50-90, density is 4.00 ± 0.15g/cm
3;
(4) product bending strength 25 ± 5Mpa; Maximum strain >=0.02 mm/mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359212A (en) * | 2018-01-31 | 2018-08-03 | 周学昌 | A kind of grinding and preparation method thereof for rail vehicle |
| CN108839640A (en) * | 2018-05-07 | 2018-11-20 | 度特斯(大连)实业有限公司 | A kind of high-speed EMUs grinding and preparation method thereof |
| CN109369083A (en) * | 2018-12-09 | 2019-02-22 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of rail traffic cavetto grinding |
| CN109534731A (en) * | 2018-12-09 | 2019-03-29 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of rail traffic is sub with oil grinding is removed |
| CN109574561A (en) * | 2018-12-09 | 2019-04-05 | 马鞍山市雷狮轨道交通装备有限公司 | The preparation method of son is ground in a kind of rail traffic with cavetto |
| CN111942330A (en) * | 2019-05-17 | 2020-11-17 | 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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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359212A (en) * | 2018-01-31 | 2018-08-03 | 周学昌 | A kind of grinding and preparation method thereof for rail vehicle |
| CN108839640A (en) * | 2018-05-07 | 2018-11-20 | 度特斯(大连)实业有限公司 | A kind of high-speed EMUs grinding 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 |
| CN109369083A (en) * | 2018-12-09 | 2019-02-22 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of rail traffic cavetto grinding |
| CN109534731A (en) * | 2018-12-09 | 2019-03-29 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of rail traffic is sub with oil grinding is removed |
| CN109574561A (en) * | 2018-12-09 | 2019-04-05 | 马鞍山市雷狮轨道交通装备有限公司 | The preparation method of son is ground in a kind of rail traffic with cavetto |
| 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 |
| 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 |
| 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 |
| CN111942330A (en) * | 2019-05-17 | 2020-11-17 | 常州中车铁马科技实业有限公司 | Shape-correcting grinder and manufacturing method thereof |
| 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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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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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311106 Tangqi Town Industrial Park, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Kete Auto Parts Co., Ltd. Address before: 311106 Tangqi Town Industrial Park, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG KETE AUTO PARTS CO., LTD. |