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Cold-pressing one-step forming method for disc brake pad

A disc brake pad and forming method technology, which is applied in the field of automobile brake systems, can solve problems such as high investment in personnel equipment and electricity costs, uneven distribution of materials, and poor product quality, so as to save hot pressing processes and stabilize product quality , the effect of loose surface

Active Publication Date: 2013-05-01
江阴市利港第二化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional disc brake pads are made by hot pressing, because the resin in the brake pad reinforcement material is a powder resin, so it cannot fully adhere to the reinforcement material during mixing. In order to ensure the performance of the brake pad Stable and needs to be hot-pressed, but in the hot-pressed molding process, the mixed resin will flow, making the material distribution uneven, so the quality of the obtained product is not good, not only the production efficiency is low in the hot-pressed molding process , and the investment in personnel, equipment and electricity is too high, energy consumption is time-consuming, and the cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of the cold-pressed resin adhesive is as follows: first put the weighed phenol and formaldehyde into the reaction kettle, start stirring and heat up, first raise the temperature to 75-85°C and keep it warm for 110-130 minutes, and then continue to heat up And assist vacuum dehydration until the temperature is 95~105°C and the vacuum degree is -0.012~-0.008MPa, stop vacuuming and lower the temperature, and add hexamethylenetetramine and hardness regulator when the temperature reaches 78~82°C. Stir well, filter and pack.

[0033] Step 3, Cold Press Forming

[0034] First put the steel back coated in step 2 into the bottom of the cavity of the mold, with the glued side of the steel back facing up, and then fill the steel back with the brake pad reinforcement material made by dry mixing in step 1 In the upper cavity, cold pressing is performed, and the cold pressing time is 10 to 20 seconds. When cold pressing, a press of more than 200 tons is select...

Embodiment 1

[0040] Disc brake pads are manufactured according to the implementation steps in the specific embodiment. Among them, the mass parts of each component of the brake pad reinforcement material are as follows: 15 parts of molybdenum modified phenolic resin, 5 parts of hardness modifier, 20 parts of silica fume cotton, 25 parts of precipitated barium sulfate, 10 parts of steel fiber, aluminum silicate hollow ball 8 parts, expanded vermiculite 15 parts, artificial graphite 10 parts, stone tar 10 parts, TY002 (polyimide resin) 2 parts.

Embodiment 2

[0042] Disc brake pads are manufactured according to the implementation steps in the specific embodiment. Among them, the mass parts of each component of the brake pad reinforcement material are as follows: 18 parts of molybdenum modified phenolic resin, 1 part of hardness modifier, 20 parts of silica fume cotton, 20 parts of precipitated barium sulfate, 5 parts of steel fiber, aluminum silicate hollow ball 10 parts, 12 parts of expanded vermiculite, 8 parts of artificial graphite, 5 parts of stone tar, 2 parts of TY002 (polyimide resin).

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Abstract

The invention relates to a cold-pressing one-step forming method for a disc brake pad. The cold-pressing one-step forming method is characterized by comprising a step 1, dry-method material mixing; a step 2, gluing of a steel back; a step 3, cold-pressing forming; a step 4, heat treating; and a step 5, surface grounding and spraying. The cold-pressing one-step forming method for the disc brake pad omits hot pressing, a material directly enters a baking oven to be treated, accordingly, a hot pressing working procedure is omitted, investment for staffs, equipment and electricity is reduced, andproduction efficiency is improved. In addition, liquid resin can be sufficiently adhered on a reinforcement material when mixed with the reinforcement material, stability of performances of the brakepad is guaranteed, flowing of the resin is reduced due to omission of the hot pressing working procedure, materials are distributed sufficiently, a manufactured product is stable in quality, loose insurface, high in apparent porosity, and good in high-temperature performance, and is noise-free, production efficiency of integral process is high, the quality of the manufactured product is good, and cost is low.

Description

technical field [0001] The invention relates to an automobile brake pad, in particular to a cold-press one-time molding preparation process of a disc brake pad in a brake system, belonging to the field of automobile brake systems. Background technique [0002] Brake pads are also called brake pads. In the braking system of a car, brake pads are the most critical safety parts, and the brake pads play a decisive role in the quality of all braking effects, so good brake pads are the protectors of people and cars. Traditional disc brake pads are made by hot pressing, because the resin in the brake pad reinforcement material is powder resin, so it cannot fully adhere to the reinforcement material during mixing, in order to ensure the performance of the brake pad It is stable and needs to be hot-pressed, but in the hot-pressed molding process, the mixed resin will flow, making the material distribution uneven, so the quality of the obtained product is not good, not only the produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/78B29C71/02C08L61/14C08K13/04
Inventor 张金华
Owner 江阴市利港第二化工有限公司
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