CN103540847A - Powder metallurgy automobile brake pad steel back and preparation method thereof - Google Patents
Powder metallurgy automobile brake pad steel back and preparation method thereof Download PDFInfo
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- CN103540847A CN103540847A CN201310472175.8A CN201310472175A CN103540847A CN 103540847 A CN103540847 A CN 103540847A CN 201310472175 A CN201310472175 A CN 201310472175A CN 103540847 A CN103540847 A CN 103540847A
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Abstract
The invention discloses a powder metallurgy automobile brake pad steel back and a preparation method thereof. The powder metallurgy automobile brake pad steel back is prepared from 87-89 parts by weight of iron powder, 1.4-1.9 parts by weight of copper powder, 6.4-6.7 parts by weight of manganese, 1.2-1.5 parts by weight of zinc, 8.1-8.3 parts by weight of Mg, 1.4-1.8 parts by weight of Sr and 2-3 parts by weight of an assistant. Through use of the assistant, alloy powder is uniformly dispersed, vertical and horizontal uniformity of the internal microstructure of the product is guaranteed, and a fatigue life of the product is prolonged. The powder metallurgy automobile brake pad steel back obtained by the preparation method does not contact with oil pollutants in production, and through high-temperature sintering, oil pollution is avoided so that an oil removal cost is reduced. The powder metallurgy automobile brake pad steel back has good stability, does not fracture easily and has a long service life.
Description
Technical field
The present invention relates to field of powder metallurgy, particularly a kind of powder metallurgy automobile brake block steel back and preparation method thereof.
Background technology
At present, brake facing is divided into three parts from structure: the annexes such as frictionshoe, steel backing and bloop, and the accessory adhering such as frictionshoe bonds to the front of steel backing with heat-sensitive resin, bloop or be riveted on the back side of steel backing, thus form the complete brake facing of a slice.The composition of three parts and effect: a frictionshoe, it is by tens kinds of raw materials, by suitable ratio, to mix post-heating compacting to form, and mainly realizes rubbing effect; B steel backing, existing steel backing is ordinary hot rolled steel plate stamping-out and makes, and mainly plays skeleton and supports and fixed action, and during braking, the piston head of brake oil cylinder, on steel backing, is shifted brake facing on brake flange onto, and frictionshoe and brake flange form friction catch; The annexes such as c bloop, their effect is that when alleviating noise as far as possible or wearing up to limit position, machinery is reported to the police.From structure above, can find out, during braking, frictionshoe is with brake flange friction, shearing force between generation and steel backing, the friction moment high temperature producing while braking continuously can reach 700 degree, to the performance of heat-sensitive resin, be a serious test, at present, the frictionshoe obscission that some low-quality goods cause because of many-sided reasons such as heat-sensitive resin quality or technology controlling and process occur on market often, thereby cause brake failure, cause major traffic accidents.At present, the method one that prevents flake is to strengthen the quality control of heat-sensitive resin and technological process.The 2nd, stamping-out fabrication hole or process some projections on steel backing, object is to increase bond area, improve bonding strength, and too much punching process hole can affect the intensity of steel backing, so process various projections or pit becomes first-selection.
Powder metallurgy be produce metal-powder or with metal-powder (or mixture of metal-powder and non-metal powder) as raw material, through being shaped and sintering, produce the industrial technology of metallic substance, matrix material and all kinds goods.At present, powder metallurgy technology has been widely used in the fields such as traffic, machinery, electronics, aerospace, weapons, biology, new forms of energy, information and nuclear industry, becomes one of branch of tool development vitality in novel material science.That powder metallurgy technology possesses is significantly energy-conservation, economize material, excellent performance, Product Precision is high and the series of advantages such as good stability, is very suitable for producing in enormous quantities.In addition, part material and the also available powder metallurgy technology manufacture of complicated shape that with conventional cast method and machining process, cannot prepare, thereby enjoy the attention of industry member.Powder metallurgy structural part product material composition is not limited by melting, both can add alloying constituent, can add other structural constituent yet, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part in mechanical property.
Powder metallurgy mechanization degree is high, can reduce personnel, can raise the efficiency again, so that cost-saving.Powder metallurgy technology can replace traditional manufacturing process, for the vast traditional forms of enterprises cost-saving.
So study the formula of the powder metallurgy of various components of machine, adapt to different needs, have great importance.
Summary of the invention
The object of this invention is to provide a kind of powder metallurgy automobile brake block steel back and preparation method thereof.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
A brake block steel back, is made by the raw material of following weight part: iron powder 87-89, copper powder 1.4-1.9, manganese 6.4-6.7, zinc 1.2-1.5, Mg 8.1-8.3, Sr 1.4-1.8, auxiliary agent 2-3;
Described auxiliary agent is made by the raw material of following weight part: iron powder 30-40, Tai-Ace S 150 3-4, Potassium tripolyphosphate 1-2, celestite powder 2-3, stalk ashes 1-2, Silane coupling agent KH550 1-2, dimethyl silicone oil 3-4, sec.-propyl distearyl acyl-oxygen base Aluminate 1-2, zinc oxide 2-3; Preparation method mixes iron powder, Tai-Ace S 150, Potassium tripolyphosphate, celestite powder, stalk ashes, grind to form 200-300 order powder, then add Silane coupling agent KH550 to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other remaining component, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
Powder metallurgy automobile brake block steel back of the present invention, by following concrete steps, made:
(1) iron powder, copper powder, manganese, zinc are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 9-11Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 700-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other remaining component is mixed;
(3) at 60-65 ℃, after mixing and stirring 75-95 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering oven, with 9-12 ℃/min of speed, is warming up to sintering 1-2 hour under 350-450 ℃ of condition, then be warming up to sintering 1.5-2 hour under 650-750 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1100-1150 ℃ of condition; In last air, be cooled to room temperature.
The present invention adds auxiliary agent, and powdered alloy is uniformly dispersed, and guarantees the uniformity coefficient in length and breadth of interiors of products weave construction, and increased the fatigue lifetime of product; The steel backing that technique of the present invention is made can not contact greasy dirt in process of production, and through high temperature sintering, can not have greasy dirt, can save oil removing cost like this; Good stability of the present invention, is not prone to the phenomenons such as fracture, long service life.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A brake block steel back, by following weight part (kilogram) raw material make: iron powder 87, copper powder 1.4, manganese 6.4, zinc 1.2, Mg 8.1, Sr 1.4, auxiliary agent 2;
Described auxiliary agent by following weight part (kilogram) raw material make: iron powder 30, Tai-Ace S 150 3, Potassium tripolyphosphate 1, celestite powder 2, stalk ashes 1, Silane coupling agent KH550 1, dimethyl silicone oil 3, sec.-propyl distearyl acyl-oxygen base Aluminate 1, zinc oxide 2; Preparation method mixes iron powder, Tai-Ace S 150, Potassium tripolyphosphate, celestite powder, stalk ashes, grind to form 200-300 order powder, then add Silane coupling agent KH550 to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other remaining component, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
Powder metallurgy automobile brake block steel back of the present invention, by following concrete steps, made:
(1) iron powder, copper powder, manganese, zinc are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 9-11Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 700-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other remaining component is mixed;
(3) at 60-65 ℃, after mixing and stirring 75-95 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering oven, with 9-12 ℃/min of speed, is warming up to sintering 1-2 hour under 350-450 ℃ of condition, then be warming up to sintering 1.5-2 hour under 650-750 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1100-1150 ℃ of condition; In last air, be cooled to room temperature.
Through detection, hardness of the present invention: HRC63; Tensile strength: 970MPa.
Claims (2)
1. a powder metallurgy automobile brake block steel back, is characterized in that, by the raw material of following weight part, is made: iron powder 87-89, copper powder 1.4-1.9, manganese 6.4-6.7, zinc 1.2-1.5, Mg 8.1-8.3, Sr 1.4-1.8, auxiliary agent 2-3;
Described auxiliary agent is made by the raw material of following weight part: iron powder 30-40, Tai-Ace S 150 3-4, Potassium tripolyphosphate 1-2, celestite powder 2-3, stalk ashes 1-2, Silane coupling agent KH550 1-2, dimethyl silicone oil 3-4, sec.-propyl distearyl acyl-oxygen base Aluminate 1-2, zinc oxide 2-3; Preparation method mixes iron powder, Tai-Ace S 150, Potassium tripolyphosphate, celestite powder, stalk ashes, grind to form 200-300 order powder, then add Silane coupling agent KH550 to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other remaining component, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
2. powder metallurgy automobile brake block steel back according to claim 1, is characterized in that, by following concrete steps, is made:
(1) iron powder, copper powder, manganese, zinc are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 9-11Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 700-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other remaining component is mixed;
(3) at 60-65 ℃, after mixing and stirring 75-95 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering oven, with 9-12 ℃/min of speed, is warming up to sintering 1-2 hour under 350-450 ℃ of condition, then be warming up to sintering 1.5-2 hour under 650-750 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1100-1150 ℃ of condition; In last air, be cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310472175.8A CN103540847A (en) | 2013-10-11 | 2013-10-11 | Powder metallurgy automobile brake pad steel back and preparation method thereof |
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| CN201310472175.8A CN103540847A (en) | 2013-10-11 | 2013-10-11 | Powder metallurgy automobile brake pad steel back and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881396A (en) * | 2017-11-30 | 2018-04-06 | 无锡昊瑜节能环保设备有限公司 | A kind of preparation method of automobile brake sheet low noise powdered metallurgical material |
| CN109023095A (en) * | 2018-09-17 | 2018-12-18 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake disc |
| CN109136783A (en) * | 2018-09-17 | 2019-01-04 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake drum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090123690A1 (en) * | 2005-01-10 | 2009-05-14 | H.C. Starck Gmbh | Metallic Powder Mixtures |
| CN101772389A (en) * | 2007-08-03 | 2010-07-07 | 株式会社神户制钢所 | Powder used in metallurgy iron is mixed-powder and iron powder sintered body |
| CN102537156A (en) * | 2011-12-31 | 2012-07-04 | 信义集团公司 | Automotive brake pad steel back made through powder metallurgy |
| CN102672181A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Production process of powder metallurgy products |
| CN103252492A (en) * | 2013-04-09 | 2013-08-21 | 吴建平 | Preparation method for powder metallurgy for automotive brake valve block |
-
2013
- 2013-10-11 CN CN201310472175.8A patent/CN103540847A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090123690A1 (en) * | 2005-01-10 | 2009-05-14 | H.C. Starck Gmbh | Metallic Powder Mixtures |
| CN101772389A (en) * | 2007-08-03 | 2010-07-07 | 株式会社神户制钢所 | Powder used in metallurgy iron is mixed-powder and iron powder sintered body |
| CN102537156A (en) * | 2011-12-31 | 2012-07-04 | 信义集团公司 | Automotive brake pad steel back made through powder metallurgy |
| CN102672181A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Production process of powder metallurgy products |
| CN103252492A (en) * | 2013-04-09 | 2013-08-21 | 吴建平 | Preparation method for powder metallurgy for automotive brake valve block |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881396A (en) * | 2017-11-30 | 2018-04-06 | 无锡昊瑜节能环保设备有限公司 | A kind of preparation method of automobile brake sheet low noise powdered metallurgical material |
| CN109023095A (en) * | 2018-09-17 | 2018-12-18 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake disc |
| CN109136783A (en) * | 2018-09-17 | 2019-01-04 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake drum |
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Application publication date: 20140129 |