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Friction material for drum brake of nine-seat passenger vehicle and preparation method of drum brake block
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A drum brake and friction material technology, applied in the field of materials, can solve the problems of not being able to carry out large-scale sales activities, difficult to meet market demand, unable to develop brakes, etc., to achieve high parking brake efficiency factors, improve The effect of driving and parking efficiency, good service braking torque and efficiency factors
Inactive Publication Date: 2016-05-11
ZHUHAI HUALI FRICTION MATERIAL +1
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However, because it is an imported model and has high quality requirements, both the complete vehicle and matching parts need to be imported from abroad. The price is high and it is also monopolized by foreign suppliers.
As a result, domestic manufacturers cannot carry out large-scale sales activities, which
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[0025] Drum brake pad preparation: Weigh the raw materials according to the above-mentioned weight ratio, and adopt the dry hot pressing process to proceed in the following four steps:
[0026] (1) Mixing: Weigh all the raw materials according to the weight percentage of the formula, put all the materials into the high-speed mixer, and stir for 2 minutes to make the friction material mixture;
[0027] (2) Hot pressing: Put the mixed material into the mold, the mold temperature is controlled at 150±5℃, the pressing pressure is 22±2MPa, and the holding time is 30s / mm for hot pressing; the hot pressing starts 15s, and then The interval is 10s, eac...
[0032] Weigh various raw materials according to the above-mentioned weight ratio, and prepare drum brake pads in the same process as in Example 1.
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Abstract
The invention aims to provide a friction material for a drum brake of a nine-seat passenger vehicle and a preparation method of a drum brake block, wherein the friction material is simple in materials and convenient to prepare. The friction material is prepared from the following components in percentage by weight: 15-19% of an organic compound, 26% of fibers and 55-59% of a filler. The method for preparing the friction block through the material comprises the following steps of (1) mixing materials, wherein all the raw materials are weighted in the percentage by weight of the formula, and all the materials are put into a high-speed material mixer and are stirred for 2 minutes, so as to form the mixed and stirred material of the friction material; (2) performing hot pressing; (3) performing heat treatment; and (4) finally, performing splicing so as to obtain the drum brake block, wherein the splicing wind pressure is 0.4MPa, the first section of splicing temperature is 175-185 DEG C, the second section of the splicing temperature is 200-210 DEG C, the third section of the splicing temperature is 200- 210 DEG C, and the splicing time is 40-50 minutes. The friction material and the preparation method of the drum brake block disclosed by the invention are applied to the field of friction materials.
Description
technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a friction material for a drum brake of a nine-seat passenger car and a drum brake pad. Background technique [0002] With the rapid growth of China's automobile production and sales, the level of China's automobile manufacturing and technology has also been steadily developed and improved. It is also a good opportunity and challenge for auto parts suppliers with independent intellectual property rights and research and development capabilities. As a commercial vehicle, nine-seat passenger cars are increasingly popular with business customers because of their first-class quality, large and comfortable driving space, and people-oriented safety design. However, because it is an imported model and has high quality requirements, both the complete vehicle and matching parts need to be imported from abroad. The price is high and it is also monopolized by foreign supplie...
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