阅读说明：本技术 一种新型铁基粉末冶金摩擦材料 (Novel iron-based powder metallurgy friction material ) 是由 袁文来 于 2018-06-29 设计创作，主要内容包括：本发明涉及摩擦材料技术领域,是一种新型铁基粉末冶金摩擦材料,由下述原料组成：铁粉55-65,雾化铜粉2-5,铅粉1-3,锑粉1-3,磷粉1-3,锡粉1-3,硅灰石2-4,高纯石英石粉2-4,玄武岩纤维1-4,石墨粉2-4；制备时,将按配比将上述原料加入混料器中混匀,将混合原料装入模具中,在450-600MPa压力下冷压成型,然后放入真空煅烧炉中缓慢升温至950-1050℃保温煅烧3-5小时,水冷至100℃以下,即得；本发明的铁基粉末摩擦材料具有良好的摩擦性能,摩擦系数稳定,提高了材料的抗弯折强度和抗剪强度。(The invention relates to the technical field of friction materials, in particular to a novel iron-based powder metallurgy friction material which is composed of the following raw materials: 55-65 parts of iron powder, 2-5 parts of atomized copper powder, 1-3 parts of lead powder, 1-3 parts of antimony powder, 1-3 parts of phosphorus powder, 1-3 parts of tin powder, 2-4 parts of wollastonite, 2-4 parts of high-purity quartz stone powder, 1-4 parts of basalt fiber and 2-4 parts of graphite powder; during preparation, the raw materials are added into a mixer according to the proportion and mixed evenly, the mixed raw materials are put into a mould and are subjected to cold press molding under the pressure of 450-plus-one material 600MPa, then the mould is put into a vacuum calcining furnace to be slowly heated to 950-plus-one material 1050 ℃ for heat preservation and calcination for 3-5 hours, and the mould is cooled to the temperature below 100 ℃ to obtain the material; the iron-based powder friction material has good friction performance and stable friction coefficient, and improves the bending strength and the shearing strength of the material.)

1. A novel iron-based powder metallurgy friction material is characterized by comprising the following raw materials in parts by weight:

iron powder 55-65 atomized copper powder 2-5

Lead powder 1-3 antimony powder 1-3

Phosphorus powder 1-3 tin powder 1-3

Wollastonite 2-4 and high-purity quartz powder 2-4

1-4 parts of basalt fiber and 2-4 parts of graphite powder;

during preparation, the raw materials are added into a mixer according to the proportion and mixed evenly, the mixed raw materials are placed into a mold, cold-pressed and molded under the pressure of 450-plus-material 600MPa, then placed into a vacuum calcining furnace, slowly heated to 950-plus-material 1050 ℃, subjected to heat preservation and calcination for 3-5 hours, and cooled to below 100 ℃ by water, and the catalyst is obtained.

2. The novel iron-based powder metallurgy friction material according to claim 1, is characterized by comprising the following raw materials in parts by weight:

iron powder 60 atomized copper powder 4

Lead powder 2 antimony powder 2

Phosphorus powder 2 tin powder 2

Wollastonite 3 high-purity quartz stone powder 3

Basalt fiber 2 graphite powder 3.

Technical Field

The invention belongs to the technical field of friction materials, and particularly relates to a novel iron-based powder metallurgy friction material.

Background

The metallurgical powder friction material is mainly composed of three parts of base metal, a lubricating component and a friction component. The structure is characterized in that: the particles with special properties are uniformly distributed in a continuous metal matrix, the latter exerts a heat-conducting effect and is subjected to mechanical stresses, the former ensures the tribological properties. Compared to friction materials made by non-powder metallurgy (such as cast iron and cast steel, resin-bonded asbestos, and resin-bonded "metal-nonmetal" powder mixtures, etc.), the advantages of powder metallurgy friction materials are: kinetic energy can be absorbed quickly, braking and transmission speeds are high, and abrasion is small; the strength is high, the high temperature and high pressure resistance is realized, the heat conductivity is good, and the stable friction coefficient can be kept even under the high temperature and high pressure; the friction material is not easy to be occluded with a friction material, corrosion resistance is realized, and the friction coefficient is less influenced by grease and moisture; low noise, long life, etc. Modern machines are developing to high speed and high load, and the requirements on the comprehensive performance of friction materials are higher and higher, so that the powder metallurgy friction materials are increasingly important.

The existing iron-based metallurgical powder friction material has unstable friction coefficient, and various prepared brake fittings have poor bending resistance and shearing resistance, thereby greatly limiting the application range of the brake fittings. Therefore, it is very important to improve the existing iron-based metallurgical powder friction material and expand the application range of the material.

Disclosure of Invention

The invention aims to provide a novel iron-based powder metallurgy friction material, aiming at the problems that the friction coefficient of the common iron-based powder metallurgy friction material on the market is unstable, the bending resistance and the shearing resistance of various manufactured braking accessories are poor, and the application range of the braking accessories is limited.

The invention relates to a novel iron-based powder metallurgy friction material which is prepared from the following raw materials in parts by weight:

iron powder 55-65 atomized copper powder 2-5

Lead powder 1-3 antimony powder 1-3

Phosphorus powder 1-3 tin powder 1-3

Wollastonite 2-4 and high-purity quartz powder 2-4

1-4 parts of basalt fiber and 2-4 parts of graphite powder;

during preparation, the raw materials are added into a mixer according to the proportion and mixed evenly, the mixed raw materials are placed into a mold, cold-pressed and molded under the pressure of 450-plus-material 600MPa, then placed into a vacuum calcining furnace, slowly heated to 950-plus-material 1050 ℃, subjected to heat preservation and calcination for 3-5 hours, and cooled to below 100 ℃ by water, and the catalyst is obtained.

The invention discloses a novel iron-based powder metallurgy friction material, which preferably comprises the following raw materials in parts by weight:

iron powder 60 atomized copper powder 4

Lead powder 2 antimony powder 2

Phosphorus powder 2 tin powder 2

Wollastonite 3 high-purity quartz stone powder 3

Basalt fiber 2 graphite powder 3.

Because a proper amount of lead, tin, antimony and copper are added into the iron-based powder friction material, eutectic compounds can be formed in the sintering process, the added phosphorus powder can form phosphated eutectic networks in the sintering process, the friction coefficient of the prepared friction material is stable, and the bending strength and the shearing strength of the material are improved.

Detailed Description