CN103555273B - Preparation method of friction material of yaw brake pad - Google Patents
Preparation method of friction material of yaw brake pad Download PDFInfo
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- CN103555273B CN103555273B CN201310521693.4A CN201310521693A CN103555273B CN 103555273 B CN103555273 B CN 103555273B CN 201310521693 A CN201310521693 A CN 201310521693A CN 103555273 B CN103555273 B CN 103555273B
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Abstract
The invention discloses a preparation method of a friction material of a yaw brake pad, belonging to the technical field of brake systems. The preparation method comprises the steps of grinding raw materials, wherein the raw materials include the following components in percentage by weight: 30-40% of iron powder, 10-15% of flake graphite, 8-12% of potash feldspar, 8-15% of red copper fiber, 8-13% of steel wool fiber, 8-12% of organosilicone modified phenolic resin, 5-10% of potassium titanate, 2-5% of antimony sulfide and 0.2-1% of vanadium oxide; mixing all the raw materials; carrying out hot press molding; carrying out vacuum hardening treatment; binding. The friction material prepared by using the method is stable in friction coefficient, high in thermal decay stability, strong in water resistance and wear resistance, little in damage to counterparts during braking, particularly suitable for braking middle-large machines, good in braking effect, long in service life, capable of being formed through one-step high-temperature hot pressing, high in degree of mechanization, simplified in production process and high in rate of finished products.
Description
Technical field
The present invention relates to a kind of breaking system technical field, particularly a kind of making method of Yaw brake block friction materials.
Background technology
Basic demand for the brake facing of heavy-duty machinery is: hardness is large, frictional coefficient is large and the large feature of wearing coefficient strong three, due to the restriction of its basic demand, the brake facing of existing heavy-duty machinery is all semipermanent mold mixture brake facing, mainly adopt metallic substance as reinforcing and important mixture, major advantage is that it normally can play braking operation at a higher temperature, can distribute heat on caliper and assembly thereof, the temperature of suitable reduction braking place simultaneously.
The making method of present friction materials is roughly batching, mixing, hot-forming and spraying are made, comprise batching, batch mixing, hot-pressing processing, thermal treatment, mill pin and spraying process make brake facing as the patent invention patent of invention " a kind of brake facing and preparation method thereof " that is CN101813147A discloses one, the shortcoming of the brake facing that the method is made is: due to the defect of material characteristics and making, can not be used for the brake system of heavy-duty machinery.
Summary of the invention
Genuine deficiency of the prior art, the invention provides a kind of making method of Yaw brake block friction materials, and by the improvement in step making method, the friction materials made is met, and hardness is large, frictional coefficient is large and the large feature of wearing coefficient strong three.
The present invention is achieved by the following technical programs:
A making method for Yaw brake block friction materials, is characterized in that: comprising weight percent is that the raw material of iron powder 30 ~ 40, crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 is by grinding, mixing, hot-forming, vacuum cure process and adhesion step.
Further, described making method specifically comprises the steps:
A, grinding, just weight percent is iron powder 30 ~ 40, the raw material of crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, eight potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 carries out grinding to form the fine particle that particle is 20 ~ 100 μm respectively by metal powder grain machine;
B, mixing, put into stirrer, churning time 0.5 ~ 1h respectively according to quantity by grinding the raw material contained in step A;
C, hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 200 ~ 250 DEG C, pressure 300 ~ 400kg/m ㎡, hold-time 1 ~ 2h;
D, vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 300 ~ 400 DEG C, hold-time 4 ~ 5h;
E, bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 250 ~ 300 DEG C, pressure 400 ~ 500kg/m ㎡, hold-time 1 ~ 2h.
Further, described making method specifically comprises the steps:
A, grinding, just weight percent is iron powder 30 ~ 40, the raw material of crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, eight potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 carries out grinding to form the fine particle that particle is 50 μm respectively by metal powder grain machine;
B, mixing, put into stirrer, churning time 0.8h respectively according to quantity by grinding the raw material contained in step A;
C, hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 225 DEG C, pressure 350kg/m ㎡, hold-time 1.5h;
D, vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 350 DEG C, hold-time 4.5h;
E, bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 270 DEG C, pressure 450kg/m ㎡, hold-time 1.5h.
Beneficial effect of the present invention is: the brake block friction material made by above raw material and step, improves frictional coefficient on the one hand, stabilizes frictional coefficient on the other hand, the heat stability that declines is high, and the water resistance of this friction materials and wear resisting property are by force, little to the damage of antithesis file during brake, are especially applicable to the braking of medium-and-large-sized machinery, good braking effect, work-ing life is strong, and friction materials is once hot-forming through high temperature, and mechanization degree is high, simplify production technique, yield rate is high.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in detail:
Embodiment one
A making method for Yaw brake block friction materials, made by grinding, mixing, hot-forming, vacuum cure process and adhesion step by raw material, concrete steps are as follows:
Grinding, just the raw material of iron powder 30kg, crystalline flake graphite 15kg, potassium felspar sand 8kg, red copper fiber 15kg, steel wool fiber 8kg, Effect of Organosilicon-modified Phenol-formaldehyde Resin 12kg, eight potassium titanate 5kg, antimony sulfide 5kg and three vanadium oxide 1kg carries out grinding to form the fine particle that particle is 20 ~ 100 μm respectively by metal powder grain machine;
Mixing, puts into stirrer, churning time 0.5h respectively according to quantity by grinding the raw material contained in step A;
Hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 200 DEG C, pressure 300kg/m ㎡, hold-time 1h;
Vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 300 DEG C, hold-time 4h;
Bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 250 DEG C, pressure 400kg/m ㎡, hold-time 1h.
Embodiment two
Grinding, just the raw material of iron powder 35kg, crystalline flake graphite 12kg, potassium felspar sand 10kg, red copper fiber 10kg, steel wool fiber 10kg, Effect of Organosilicon-modified Phenol-formaldehyde Resin 10kg, eight potassium titanate 8kg, antimony sulfide 3kg and three vanadium oxide 0.5kg carries out grinding to form the fine particle that particle is 20 ~ 100 μm respectively by metal powder grain machine;
Mixing, puts into stirrer, churning time 0.8h respectively according to quantity by grinding the raw material contained in step A;
Hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 230 DEG C, pressure 350kg/m ㎡, hold-time 1.5h;
Vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 350 DEG C, hold-time 4.5h;
Bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 280 DEG C, pressure 450kg/m ㎡, hold-time 1.5h.
Embodiment three
Grinding, just the raw material of iron powder 40kg, crystalline flake graphite 10kg, potassium felspar sand 12kg, red copper fiber 8kg, steel wool fiber 13kg, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8kg, eight potassium titanate 10kg, antimony sulfide 5kg and three vanadium oxide 1kg carries out grinding to form the fine particle that particle is 20 ~ 100 μm respectively by metal powder grain machine;
Mixing, puts into stirrer, churning time 1h respectively according to quantity by grinding the raw material contained in step A;
Hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 250 DEG C, pressure 400kg/m ㎡, hold-time 2h;
Vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 400 DEG C, hold-time 5h;
Bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 300 DEG C, pressure 500kg/m ㎡, hold-time 2h.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its objective is to allow and be familiar with these those skilled in the art and can understand content of the present invention implementing according to this; can not limit the scope of the invention with this; all according to the present invention spirit essence done by equivalents or modification, all should contain in protection scope of the present invention.
Claims (3)
1. a making method for Yaw brake block friction materials, is characterized in that: comprising weight percent is that the raw material of iron powder 30 ~ 40, crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 is by grinding, mixing, hot-forming, vacuum cure process and adhesion step.
2. the making method of a kind of Yaw brake block friction materials according to claim 1, is characterised in that: described making method specifically comprises the steps:
A, grinding, just weight percent is iron powder 30 ~ 40, the raw material of crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, eight potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 carries out grinding to form the fine particle that particle is 20 ~ 100 μm respectively by metal powder grain machine;
B, mixing, put into stirrer, churning time 0.5 ~ 1h respectively according to quantity by grinding the raw material contained in step A;
C, hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 200 ~ 250 DEG C, pressure 300 ~ 400kg/m ㎡, hold-time 1 ~ 2h;
D, vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 300 ~ 400 DEG C, hold-time 4 ~ 5h;
E, bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 250 ~ 300 DEG C, pressure 400 ~ 500kg/m ㎡, hold-time 1 ~ 2h.
3. the making method of a kind of Yaw brake block friction materials according to claim 1, is characterised in that: described making method specifically comprises the steps:
A, grinding, just weight percent is iron powder 30 ~ 40, the raw material of crystalline flake graphite 10 ~ 15, potassium felspar sand 8 ~ 12, red copper fiber 8 ~ 15, steel wool fiber 8 ~ 13, Effect of Organosilicon-modified Phenol-formaldehyde Resin 8 ~ 12, eight potassium titanate 5 ~ 10, antimony sulfide 2 ~ 5 and three vanadium oxides 0.2 ~ 1 carries out grinding to form the fine particle that particle is 50 μm respectively by metal powder grain machine;
B, mixing, put into stirrer, churning time 0.8h respectively according to quantity by grinding the raw material contained in step A;
C, hot-forming, the raw material mixed in step B is added in mould and carries out mold pressing, molding temperature 225 DEG C, pressure 350kg/m ㎡, hold-time 1.5h;
D, vacuum cure process, friction materials step C made will in vacuum machine, and temperature is 350 DEG C, hold-time 4.5h;
E, bonding, friction materials and brake facing shell are passed through the conscientious bonding of hot pressing, and temperature is temperature 270 DEG C, pressure 450kg/m ㎡, hold-time 1.5h.
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| CN106433013B (en) * | 2016-08-29 | 2019-01-11 | 贵州新安航空机械有限责任公司 | A kind of high-power locomotive Composition brake shoes friction material and preparation method |
| CN108180237A (en) * | 2017-12-27 | 2018-06-19 | 重庆红宇摩擦制品有限公司 | Friction material of wriggling noise and preparation method thereof can be reduced |
| CN110985573A (en) * | 2019-12-17 | 2020-04-10 | 湘电风能有限公司 | Composite material and method for preparing wind power yaw brake pad |
| CN113801373B (en) * | 2021-09-13 | 2023-09-01 | 铁科纵横（天津）科技发展有限公司 | Friction filler, friction material composition, friction material and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158383A (en) * | 2007-10-30 | 2008-04-09 | 徐州工业职业技术学院 | Brake block friction material |
| CN101402780A (en) * | 2008-11-11 | 2009-04-08 | 信义集团公司 | Method for producing friction material with ceramic fibre |
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| US7141522B2 (en) * | 2003-09-18 | 2006-11-28 | 3M Innovative Properties Company | Ceramics comprising Al2O3, Y2O3, ZrO2 and/or HfO2, and Nb2O5 and/or Ta2O5 and methods of making the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158383A (en) * | 2007-10-30 | 2008-04-09 | 徐州工业职业技术学院 | Brake block friction material |
| CN101402780A (en) * | 2008-11-11 | 2009-04-08 | 信义集团公司 | Method for producing friction material with ceramic fibre |
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