CN101284311A - Sintered copper alloy brake-holder block and preparation method - Google Patents
Sintered copper alloy brake-holder block and preparation method Download PDFInfo
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- CN101284311A CN101284311A CNA2008100606798A CN200810060679A CN101284311A CN 101284311 A CN101284311 A CN 101284311A CN A2008100606798 A CNA2008100606798 A CN A2008100606798A CN 200810060679 A CN200810060679 A CN 200810060679A CN 101284311 A CN101284311 A CN 101284311A
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Abstract
The invention relates to a sintered copper alloy brake shoe used for a pollution-free motor vehicle with high speed and high discharge capacity and a manufacturing method. The sintered copper alloy brake shoe comprises a metal brake shoe steel backing. The brake shoe is formed by die-casting and molding 45-55% of electrolytic copper, 4-8% of tin powder, 3-5% of zinc powder, 13-20% of reduced iron powder, 6-10% of Gaoyun sand, 3-5% of graphite, 1-3% of molybdenum trioxide, 3-5% of lead powder and 4-6% of silica sand. The brake shoe has the following advantages: 1) environment-friendly composition, no friction losses, no dust and no pollution to environment at a high temperature; 2) good heat conductivity, high temperature resistance, suitability for a temperature higher than 600DEG C without separation of the brake shoe and the brake shoe steel backing, and minimum heat fading property; 3) little noise when braking, and greatly reduced pollution to environment; 4) suitability for effective braking of the motor vehicle with large tonnage, high speed and high discharge capacity; 5) high shock resistance and long service life.
Description
Technical field
The present invention relates to a kind of high speed, big discharge capacity, pollution-free motor vehicle sintered copper alloy brake-holder block and preparation method, belongs to brake(-holder) block and makes the field.
Background technology
Granted publication CN 1053951C, title " a kind of brake block and preparation method thereof ", the percentage by weight of each component is: hybrid resin 10～30%, bentonite or bauxite 12～18%, blanc fixe 15～20%, Iron Ore Powder 20～25%, calcium carbonate 5～6%, magnesia or alundum (Al 2～5%, graphite 3～5%, molybdenum bisuphide 1～2%, glass fibre 2～3%, steel fibre 2～5%, copper fiber 1%, hybrid resin is 1～2: 1 for the mixed weight ratio of the mixture of clothes urea formaldehyde and phenolic resins and clothes urea formaldehyde and phenolic resins.Its preparation method: one, mediate 1. and will stir 5 minutes in phenolic resins and the arteries and veins urea formaldehyde input kneader, carried out the blending and modifying processing in 10 minutes with stirring in bentonite or the bauxite input kneader again, 2. filler is dropped in the above-mentioned kneader together, fully stirred 10 minutes, 3. under stirring condition, in above-mentioned kneader, drop into glass fibre, steel fibre and key fiber successively, stirred 20 minutes; Two, it is 1. dry to give processing: with kneaded dry materials, with feel tack-free till, 2. pulverize: the material that drying is crossed is cooled to normal temperature, pulverizes in the input pulverizer, the granularity that makes material is about 80 orders; Three, 1. compression molding is suppressed: coating release agent in the mould that Xiang Yure crosses, put into steel backing treated mistake and that scribble binding agent, material is placed die cavity, under 160 ℃～170 ℃, unit pressure 18～20MPa condition, suppress 1～1.5 minute/mm, 2. heat treatment: pile up on anchor clamps semi-finished product disc type sheet fastening with screw, place baking oven then, rising to 100 ℃ through 1 hour kept 3 hours, rose to 125～130 ℃ again through 30 minutes and kept 3 hours, stop heating afterwards and treat that temperature is reduced to below 60 ℃ and can come out of the stove; Four, post processing: can obtain finished product through flour milling with after spraying paint.Its weak point: the one, the not environmental protection of brake block constituent, very easily abrasion at high temperature, generation dust, contaminated environment; The 2nd, heatproof is low, and character of heat-fading is very big; The 3rd, impact resistance is poor, and impulsive force is big slightly, just can cause separating between brake block and the pedestal; The 4th, under the high temperature more than 300 ℃, promptly produce between brake block and the pedestal and separate, service life is short.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, designing a kind of one is that heat-resisting decline performance is good; The 2nd, anti-high speed, anti-impact force are good, and at a high speed, under the large impact power braking state, can not cause brake block to separate with brake-holder block steel-back; The 3rd, high temperature resistant, brake block can not come off from brake-holder block steel-back under the condition of high temperature, and is little to the brake disc wearing and tearing; The 4th, antifriction decreases, pollution-free, the brake noise is little; Five are to use the life-span long, are specially adapted to the brake of high speed, big discharge capacity motor vehicle.
Design: in order to realize above-mentioned purpose of design.1, being Main Ingredients and Appearance with the cathode copper in the component of brake block, is one of feature of the present invention.The purpose of doing like this is: because thermal conductivity and electrical conductivity is all very high, chemical stability is strong, tensile strength is big, easily welding, tool corrosion stability, plasticity, ductility, can with metals formation alloys such as zinc, tin, lead, manganese, cobalt, nickel, aluminium, iron.Therefore, the application adopts the Main Ingredients and Appearance of cathode copper as brake block, not only can improve the pyroconductivity of brake block effectively, and can form copper alloy with metals such as zinc, tin, aluminium, iron, to improve the braking quality of brake block.2, the employing of glass putty in the component of brake block is two of a feature of the present invention.The purpose of doing like this is: metallic tin is mainly used in alloying; it is rich in malleability; plasticity is good; pure tin and weak organic acid effect are slow; corrosion resistance is good, even be corroded, the compound that is generated is generally nontoxic; utilize environmental protection, the application just is being based on this specific character of tin and is making the copper alloy brake block.3, the employing of zinc powder in the component of brake block is three of a feature of the present invention.The purpose of doing like this is: the one, with zincizing agent and steel piece, place altogether and ooze stove, be heated to 400 ℃ ±, the active zinc atom then by the surface of steel piece to internal penetration, then diffusion from inside to outside of iron atom simultaneously, having formed a uniform zinc-iron compound on the product top layer is zinc coat.Because zinc coat corrosion resistance extra-heavy, even under ocean and abominable industrial atmosphere environment, the zincizing product is after 1600 days, and its surface is none rusty stain still; The 2nd, excellent in abrasion resistance, the case hardness of zinc coat is HV250-400, so the wearability of sherardise and erasibility will be got well a lot; The 3rd, because the essentially no pollution of sherardise when carrying out zincizing, need be heated to 400 ℃ to Sherardizing furnace, adopt electrical heating, smokeless by the design Sherardizing furnace; The 4th, because sherardise is a sheradizing, do not produce so there is the steam of zinc, in addition, workpiece all permeates, separates in airtight utensil with auxiliary agent, so can not produce pollution to environment.The application utilizes the above-mentioned feature of zinc powder to improve brake block corrosion resistance, wearability just, helps environmental protection simultaneously.4, the employing of reduced iron powder in the component of brake block is four of a feature of the present invention.The purpose of doing like this is: because reduced iron powder good fluidity, compressibility and sintered dimensions stability, and can be well as the usefulness of making high density, high-intensity machine components.The application utilizes just that the reduced iron powder compressibility is stable, the sintered dimensions stable properties is made brake block.5, the employing of graphite in the component of brake block is five of a feature of the present invention.The purpose of doing like this is: graphite has the electric conductivity of height, and ability is high temperature more than 3000 ℃, 3800 ℃ of fusing points, and 4250 ℃ of boiling points have plasticity, and chemical stability is strong, is insoluble to soda acid.The application during as the additive of brake block, can improve the temperature tolerance of brake block with it effectively.6, the employing of molybdenum trioxide in the component of brake block is six of a feature of the present invention.The purpose of doing like this is: molybdenum trioxide is usually as alloy and stainless additive, it can strengthen intensity, hardness, solderability and the toughness of alloy, also can strengthen its high temperature strength and decay resistance, the application utilizes this characteristic of molybdenum trioxide to make brake block just, to improve its intensity, hardness and toughness.7, the employing of lead powder in the component of brake block is seven of a feature of the present invention.The purpose of doing like this is: lead powder generally is used for making the additive of friction material, and the density of its metal is bigger, and fusing point is higher, is ductile, and can conduct heat, conduct electricity.The application utilizes this feature of lead powder just, improves its fusing point and hardness in the making of brake block, reduces its heat fading.8, metal brake-holder block steel-back copper plating treatment is eight of a feature of the present invention.The purpose of doing like this is: after the metal brake-holder block steel-back carries out copper plating treatment, make and form copper alloy layer under metal brake-holder block steel-back face and the face, this copper alloy layer and copper alloy brake block base for can form molten adhere, are guaranteed the copper alloy brake block of sinter molding and the reliable welding between the metal brake-holder block steel-back at high temperature action.
Technical scheme 1: sintered copper alloy brake-holder block, it comprises the metal brake-holder block steel-back, and brake block is 45～55% cathode coppers, 4～8% glass puttys, 3～5% zinc powders, 13～20% reduced iron powders, 6～10% high cloud sand, 3～5% graphite, 1～3% molybdenum trioxide, 3～5% lead powder and 4～6% silicon cloud sand die casts by percentage by weight.
Technical scheme 2: the preparation method of sintered copper alloy brake-holder block, it comprises the metal brake-holder block steel-back, (1) metal brake-holder block steel-back copper plating treatment forms the copper face brake-holder block steel-back; At first with weight 45～55% cathode coppers, 4～8% glass puttys, 3～5% zinc powders, 13～20% reduced iron powders, 6～10% high cloud sand, 3～5% graphite, 1～3% molybdenum trioxide, 3～5% lead powder and 4～6% silicon cloud sand mixing and stirring, be equipped with the mould inner high voltage then and be pressed into required brake block base, the brake block base is placed on the copper face brake-holder block steel-back, again the copper face brake-holder block steel-back is inserted in the high temperature sintering furnace, kindling temperature to 780～810 ℃ progressively, sintering 3～6 hours, various powder compositions in the brake block base produce chemical reaction and sinter molding each other under action of high temperature, and the brake block of sinter molding and the welding of copper face brake-holder block steel-back are one, at this moment, cooling is come out of the stove, and unilateral the processing by the size grinding of the brake of sinter molding got final product.
The present invention compares with background technology, and the one, the environmental protection of brake block composition at high temperature is difficult for abrasion, does not produce dust, free from environmental pollution; The 2nd, heat conductivity is good, and the heatproof height can be applicable between high temperature more than 600 ℃ and brake block and the brake-holder block steel-back and not separate, and its character of heat-fading is minimum; The 3rd, noise is little during brake, has greatly reduced environmental pollution; The 4th, be specially adapted to large-tonnage, at a high speed, effective braking of big discharge capacity motor vehicle; The 5th, shock resistance is good, long service life.
Description of drawings
Fig. 1 is the structural representation of sintered copper alloy brake-holder block.
The specific embodiment
Embodiment 1: sintered copper alloy brake-holder block, it comprises metal brake-holder block steel-back 3, brake block 1 is 45～55% cathode coppers, 4～8% glass puttys, 3～5% zinc powders, 13～20% reduced iron powders, 6～10% high cloud sand, 3～5% graphite, 1～3% molybdenum trioxide, 3～5% lead powder and 2～6% silicon cloud sand die casts by percentage by weight, and its detailed embodiment is as follows:
Embodiment 2: on the basis of embodiment 1, and cathode copper 45%, glass putty 8%, zinc powder 3%, reduced iron powder 20%, high cloud sand 6%, graphite 5%, molybdenum trioxide 3%, lead powder 5% and silicon cloud sand 5%.
Embodiment 3: on the basis of embodiment 1, and cathode copper 55%, glass putty 4%, zinc powder 5%, reduced iron powder 17%, high cloud sand 10%, graphite 3%, molybdenum trioxide 1%, lead powder 3% and silicon cloud sand 2%.
Embodiment 4: on the basis of embodiment 1, and cathode copper 52%, glass putty 6%, zinc powder 5%, reduced iron powder 13%, high cloud sand 9%, graphite 4%, molybdenum trioxide 4%, lead powder 4% and silicon cloud sand 3%.
Embodiment 5: on the basis of embodiment 1, and cathode copper 50%, glass putty 6%, zinc powder 4%, reduced iron powder 17%, high cloud sand 8%, graphite 4%, molybdenum trioxide 2%, lead powder 4% and silicon cloud sand 5%.
Embodiment 6: on the basis of the foregoing description, and the preparation method of sintered copper alloy brake-holder block, it comprises metal brake-holder block steel-back 3, (1) metal brake-holder block steel-back copper plating treatment forms the copper face brake-holder block steel-back; At first with the weight cathode copper, glass putty, zinc powder, reduced iron powder, high cloud sand, graphite, molybdenum trioxide, lead powder and silicon cloud sand mixing and stirring, be equipped with the mould inner high voltage then and be pressed into required brake block base, the brake block base is placed on the copper face brake-holder block steel-back, again the copper face brake-holder block steel-back is inserted in the high temperature sintering furnace, kindling temperature to 780～810 ℃ progressively, sintering 3～6 hours, various powder compositions in the brake block base produce chemical reaction and sinter molding each other under action of high temperature, and the brake block of sinter molding and the welding of copper face brake-holder block steel-back are one, at this moment, cooling is come out of the stove, and unilateral the processing by the size grinding of the brake of sinter molding got final product.Embodiment 1～6 described cathode copper all refers to the powdery cathode copper.
Last furnace temperature to 780～810 ℃, sintering 3～6 hours, and 500 required～800kg/cm of brake block base high pressure compression molding
2Span be any value in this scope and comprise end value.
What need understand is: though the foregoing description is to the present invention's 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 to the restriction of 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 (4)
1, a kind of sintered copper alloy brake-holder block, it comprises the metal brake-holder block steel-back, it is characterized in that: brake block is 45～55% cathode coppers, 4～8% glass puttys, 3～5% zinc powders, 13～20% reduced iron powders, 6～10% high cloud sand, 3～5% graphite, 1～3% molybdenum trioxide, 3～5% lead powder and 4～6% silicon cloud sand die casts by percentage by weight.
2, the described sintered copper alloy brake-holder block of root claim 1 is characterized in that: cathode copper 50%, glass putty 6%, zinc powder 4%, reduced iron powder 17%, high cloud sand 8%, graphite 4%, molybdenum trioxide 2%, lead powder 4% and silicon cloud sand 5%.
3, a kind of preparation method of sintered copper alloy brake-holder block, it comprises the metal brake-holder block steel-back, it is characterized in that: (1) metal brake-holder block steel-back copper plating treatment forms the copper face brake-holder block steel-back; At first with weight 45～55% cathode coppers, 4～8% glass puttys, 3～5% zinc powders, 13～20% reduced iron powders, 6～10% high cloud sand, 3～5% graphite, 1～3% molybdenum trioxide, 3～5% lead powder and 4～6% silicon cloud sand mixing and stirring, be equipped with the mould inner high voltage then and be pressed into required brake block base, the brake block base is placed on the copper face brake-holder block steel-back, again the copper face brake-holder block steel-back is inserted in the high temperature sintering furnace, kindling temperature to 780～810 ℃ progressively, sintering 3～6 hours, various powder compositions in the brake block base produce chemical reaction and sinter molding each other under action of high temperature, and the brake block of sinter molding and the welding of copper face brake-holder block steel-back are one, at this moment, cooling is come out of the stove, and unilateral the processing by the size grinding of the brake of sinter molding got final product.
4, the preparation method of sintered copper alloy brake-holder block according to claim 3 is characterized in that: brake block blank molding high pressure is 500～800kg/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100606798A CN101284311A (en) | 2008-04-16 | 2008-04-16 | Sintered copper alloy brake-holder block and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100606798A CN101284311A (en) | 2008-04-16 | 2008-04-16 | Sintered copper alloy brake-holder block and preparation method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900175A (en) * | 2010-05-19 | 2010-12-01 | 瑞安市华驰机车部件有限公司 | Brake shoe |
| CN102294482A (en) * | 2011-06-09 | 2011-12-28 | 西安航空制动科技有限公司 | Iron-copper-based powder alloy brake block and preparation method thereof |
| CN102401051A (en) * | 2010-09-10 | 2012-04-04 | 吴佩芳 | Powder metallurgical brake shoe for railway locomotive |
| CN104259466A (en) * | 2014-10-20 | 2015-01-07 | 北京科技大学 | Method for connecting copper-based power metallurgy composite materials and steel |
| CN104910652A (en) * | 2015-04-27 | 2015-09-16 | 昆山德泰新材料科技有限公司 | Copper-based metal powder pigment and preparation method thereof |
| CN104923794A (en) * | 2015-05-22 | 2015-09-23 | 苏州市嘉明机械制造有限公司 | Production process of high-temperature resistant insulation mirror plate |
| CN107763124A (en) * | 2017-10-24 | 2018-03-06 | 北京天仁道和新材料有限公司 | A kind of brake block and preparation method thereof |
| CN108916277A (en) * | 2018-07-18 | 2018-11-30 | 滁州欧瑞斯机车部件有限公司 | A kind of preparation method of copper-based brake block friction material |
| CN110605387A (en) * | 2019-08-02 | 2019-12-24 | 贵州新安航空机械有限责任公司 | Sintering method of integral sintered powder metallurgy brake pad |
-
2008
- 2008-04-16 CN CNA2008100606798A patent/CN101284311A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900175A (en) * | 2010-05-19 | 2010-12-01 | 瑞安市华驰机车部件有限公司 | Brake shoe |
| CN102401051A (en) * | 2010-09-10 | 2012-04-04 | 吴佩芳 | Powder metallurgical brake shoe for railway locomotive |
| CN102401051B (en) * | 2010-09-10 | 2014-12-03 | 北京天宜上佳新材料有限公司 | Powder metallurgical brake shoe for railway locomotive |
| CN102294482A (en) * | 2011-06-09 | 2011-12-28 | 西安航空制动科技有限公司 | Iron-copper-based powder alloy brake block and preparation method thereof |
| CN102294482B (en) * | 2011-06-09 | 2013-05-22 | 西安航空制动科技有限公司 | Iron-copper-based powder alloy brake block and preparation method thereof |
| CN104259466A (en) * | 2014-10-20 | 2015-01-07 | 北京科技大学 | Method for connecting copper-based power metallurgy composite materials and steel |
| CN104910652A (en) * | 2015-04-27 | 2015-09-16 | 昆山德泰新材料科技有限公司 | Copper-based metal powder pigment and preparation method thereof |
| CN104910652B (en) * | 2015-04-27 | 2017-07-28 | 昆山德泰新材料科技有限公司 | A kind of bronze movable type pigment and preparation method thereof |
| CN104923794A (en) * | 2015-05-22 | 2015-09-23 | 苏州市嘉明机械制造有限公司 | Production process of high-temperature resistant insulation mirror plate |
| CN107763124A (en) * | 2017-10-24 | 2018-03-06 | 北京天仁道和新材料有限公司 | A kind of brake block and preparation method thereof |
| CN108916277A (en) * | 2018-07-18 | 2018-11-30 | 滁州欧瑞斯机车部件有限公司 | A kind of preparation method of copper-based brake block friction material |
| CN108916277B (en) * | 2018-07-18 | 2020-04-21 | 滁州欧瑞斯机车部件有限公司 | Preparation method of copper-based brake pad friction material |
| CN110605387A (en) * | 2019-08-02 | 2019-12-24 | 贵州新安航空机械有限责任公司 | Sintering method of integral sintered powder metallurgy brake pad |
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Open date: 20081015 |