TWI694060B - Carbon ceramic wafer and its preparation method - Google Patents

Abstract

A carbon-ceramic ordering piece integrating a support member and a friction member, wherein the friction member is made of a combination of iron powder, ceramic powder, resin and carbon material, whereby the carbon-ceramic order piece has weight Light, heat-resistant and anti-deformation performance, applied to brake discs made of ceramic composite materials, the average deceleration can reach 6.62m/s ² .

Description

Carbon ceramic wafer and its preparation method

The present invention relates to a horn, especially a carbon ceramic horn with improved braking performance.

The common brake devices are drum brakes and disc brakes. Both of these brake devices are used to make the discs rub the brake drum or brake disc, and then through the increasing friction to achieve deceleration At the same time, the brake disc is connected to the support disc to achieve the purpose of decelerating or stopping the vehicle. Therefore, the principle of vehicle braking is mainly friction. The friction between the disc and the brake disc is used to achieve the braking effect. The kinetic energy of the vehicle is converted into heat energy and consumed to stop the vehicle, so strengthening the performance of the pad is very effective to improve the performance of the brake device.

In addition to paying attention to the coefficient of friction, the temperature resistance, heat dissipation and matching with the brake disc can not be ignored when using the brake disc; in addition to the light weight of the carbon ceramic brake disc, its friction force and heat resistance are better than ordinary The metal disc is good, and it also has the advantages of good heat dissipation and not easy to deform, but matching it to make the film also requires a recipe process to achieve superior braking ability.

Xizhi Siccc (Kettle, USA) is currently the only commercially available carbon fiber disc brand abroad. Its brake discs were tested with the company's 2015 red pad. The average deceleration (m/s ² ) is less than 4.5, while the global bicycle stainless steel (sus 420/410) brake disc, the maximum average deceleration (m/s ² ) is about 4~5.

In view of the shortcomings of the above-mentioned conventional technology, the main object of the present invention is to provide a carbon ceramic chip that integrates a support member and a friction member, the friction member is composed of iron powder, ceramic powder, resin and carbon materials, The friction member is engaged with the support member, whereby the carbon ceramic has the characteristics of light weight, heat resistance and deformation resistance, and can be applied to brake discs made of ceramic composite materials, with an average deceleration of 6.62m /s ² .

In order to achieve the above object, according to a solution proposed by the present invention, a carbon ceramic command sheet is provided. The carbon ceramic command sheet includes: a support member; and a friction member, the friction member is made of iron powder, ceramic powder, resin In combination with a carbon material, the friction member is joined to the support member.

The carbon ceramic wafer of the present invention, wherein the iron powder may account for 50 to 85% by weight of the friction member, the ceramic powder may account for 5 to 40% by weight of the friction member, and the resin may account for the friction member The weight ratio is 3 to 15% by weight, and the carbon material may account for 5 to 15% by weight of the friction member.

The carbon ceramic wafer of the present invention, wherein the material of the ceramic powder may be a group consisting of aluminum oxide, silicon oxide, aluminum nitride, zirconium oxide, silicon nitride, and silicon carbide, and the material of the resin may be selected from phenolic A group consisting of resin, epoxy resin and silicone resin.

The present invention proposes a method for manufacturing carbon ceramic wafers The steps include: (A) mixing an iron powder, a ceramic powder and a resin colloid to form a mixed jelly; (B) drying the mixed jelly to form a mixture, and then performing cold pressing on the mixture (C) The mixture is subjected to aging treatment. The aging treatment is heated to 180 degrees Celsius for two hours, and the mixed jelly is matured to form a ceramic composite material; (D) The ceramic composite material is subjected to heat treatment and densification treatment After that, a carbon ceramic is formed to make the friction member of the sheet.

The above summary, the following detailed description and the accompanying drawings are intended to further illustrate the ways, means and effects of this creation to achieve its intended purpose. The other purposes and advantages of this creation will be explained in the subsequent description and drawings.

S110‧‧‧Step (A)

S120‧‧‧Step (B)

S130‧‧‧Step (C)

S140‧‧‧Step (D)

The first figure is a schematic diagram of the method for manufacturing the carbon ceramic wafer of the present invention.

The following is a specific example to illustrate the implementation of this creation. Those familiar with this skill can easily understand the advantages and effects of this creation from the content disclosed in this specification.

As shown in the first figure, it is a method for manufacturing a carbon ceramic wafer made by the present invention. The steps include: S110 (A) mixing an iron powder, a ceramic powder and a resin colloid to form a Mixed jelly; S120(B) drying the mixed jelly to form a mixture, and then cold pressing the mixture; S130(C) aging the mixture, the aging treatment is heated to 180 degrees Celsius After the mixture lasts for two hours, the mixture matures to form a ceramic composite material; S140 (D) After the ceramic composite material is heat-treated and densified, a carbon ceramic is formed to make the friction member of the sheet.

In this way, the above-mentioned carbon ceramic is used to make the friction member of the sheet. The present invention proposes a solution, a carbon ceramic to make the sheet, which includes: a support member; a friction member, the friction member is made of iron powder, ceramic powder , Resin and carbon materials, the friction member is joined to the support member, the iron powder may account for 50 to 85% by weight of the friction member, the ceramic powder may account for 5 to 40% by weight of the friction member , The resin may account for 3 to 15 wt% of the friction member weight, and the carbon material may account for 5 to 15 wt% of the friction member weight, although step (A) is not added in the above carbon ceramic manufacturing method Carbide, however, the resin colloid added in step (A) will naturally produce carbon material through the heat treatment in step (D). The material of the ceramic powder may be alumina, silicon oxide, aluminum nitride, zirconium oxide, nitride For the group consisting of silicon and silicon carbide, the material of the resin can be selected from the group consisting of phenolic resin, epoxy resin, and silicone resin.

另使用一實驗組之碳陶瓷煞車碟盤搭配2014 red pad進行測試，依不同的正向力(握把力)進行6次量測，量測結果如右表：

由上數量測結果，可知未使用本發明改良之碳陶瓷來令片之煞車效果，接下來使用上述實驗組之碳陶瓷煞車碟盤搭配本實施例之碳陶瓷來令片，分別以美規ISO(煞車2.5sec，停止時間25sec，煞車次數3次，循環停止時間34sec)及歐規DIN(煞車3sec，停止時間3sec，煞車次數3次，循環停止時間4sec)測試，歐規DIN測試較嚴格，溫度較高，測試平均減速度(m/s²)結果如下表：

來另片與煞車碟盤在ISO第7循環握把力約140N下平均減速度達7.18m/s²，來另片磨損0.358mm(原厚~4mm)，接著進行歐規DIN測試，煞車碟盤在第9循環握把力約180N下平均減速度達6.62m/s²(明顯優於不銹鋼平均減速度最大4~5m/s²之間)，來另片只磨損0.2mm，高溫下磨損反而較低。 The carbon ceramic brake disc proposed by the present invention can be used in carbon ceramic brake discs, including bicycles, locomotives, automobiles and other carbon ceramic brake discs. The following is an embodiment of the present invention. First, a control group is measured first. This embodiment uses Kettle carbon brake discs from the United States and the company's 2015 red pad as a control group. After testing, the maximum temperature of the brake disc is about 160 ℃, and the temperature of the metal back is about 200 ℃, depending on the different The forward force (grip force) was measured 9 times, and the measurement results are as follows:

In addition, an experimental group of carbon ceramic brake discs with 2014 red pad was used for testing, and the measurement was performed 6 times according to different positive forces (grip force). The measurement results are shown in the table on the right:

According to the above measurement results, it can be seen that the carbon ceramic brake disc of the above experimental group is used with the carbon ceramic of this embodiment to make the brake effect without using the improved carbon ceramic of the present invention. (Brake 2.5sec, stop time 25sec, brake times 3 times, cycle stop time 34sec) and European DIN (brake 3sec, stop time 3sec, brake times 3 times, cycle stop time 4sec) test, European DIN test is more strict, The higher the temperature, the test average deceleration (m/s ² ) results are as follows:

The average deceleration of the disc and the brake disc is 7.18m/s ² under the ISO 7th cycle grip force of about 140N. The disc wear is 0.358mm (original thickness ~ 4mm), and then the European DIN test is performed. The brake disc The average deceleration of the disk is 6.62m/s ² under the grip force of about 180N in the 9th cycle (significantly better than the average deceleration of stainless steel between 4~5m/s ² ), the other piece wears only 0.2mm, and wears at high temperature It is lower.

In another embodiment, the test carbon-ceramic brake disc is matched with the carbon-ceramic brake disc proposed by the present invention. The test uses 3000 brake endurance tests under the conditions of simulated vehicle weight: 100kg, speed: 12.5km/hr, ambient wind speed : 12.5km/hr, brake deceleration: 2.2m/s ² , the test time is 3 seconds and 3 seconds, the disc number 1070816 has passed the brake durability test, the weight loss is 1g, the original weight is 10g, and the wear material is about 4g. The rest is 6g metal back plate, one piece weighs 10 pieces, each test requires 2 pieces total 20g, under abrasion times 1500, one piece reduces the weight 1g, it is estimated that this piece can bear about 6000 wear The detailed test results are as follows:

Based on the above experiments, it can be concluded that the improved carbon ceramic of the present invention has the following advantages: 1. Better high temperature resistance; 2. Higher high temperature friction; thereby, applied to carbon ceramic brake discs (including bicycles) , Locomotives, automobiles and other carbon ceramic brake discs) can effectively improve the braking effect of the brake system and solve the problems of conventional technology.

The above-mentioned embodiments are only illustrative of the characteristics and effects of this creation, and are not intended to limit the scope of the substantive technical content of this creation. Anyone who is familiar with this skill can modify and change the above-mentioned embodiments without violating the spirit and scope of creation. Therefore, the protection scope of the rights of this creation should be as listed in the patent application scope described later.

S110‧‧‧Step (A)

S120‧‧‧Step (B)

S130‧‧‧Step (C)

S140‧‧‧Step (D)

Claims (8)

A carbon ceramic order piece includes: a support member; a friction member, which is composed of iron powder, ceramic powder, resin, and carbon material, and the friction member is joined with the support member. The carbon ceramic wafer as described in item 1 of the patent application scope, wherein the iron powder accounts for 50 to 85% by weight of the friction member. The carbon ceramic wafer as described in item 1 of the patent application, wherein the ceramic powder accounts for 5 to 40 wt% of the weight of the friction member. The carbon ceramic wafer as described in item 1 of the patent application scope, wherein the resin accounts for 3 to 15 wt% of the weight of the friction member. The carbon ceramic wafer as described in item 1 of the patent application scope, wherein the carbon material accounts for 5 to 15 wt% of the weight of the friction member. The carbon ceramic wafer as described in item 1 of the patent scope, wherein the material of the ceramic powder is selected from the group consisting of aluminum oxide, silicon oxide, aluminum nitride, zirconium oxide, silicon nitride, and silicon carbide. The carbon ceramic wafer as described in item 1 of the patent application scope, wherein the material of the resin is selected from the group consisting of phenolic resin, epoxy resin, and silicone resin. A method for manufacturing carbon ceramic wafers, the steps of which include: (A) mixing an iron powder, a ceramic powder and a resin colloid to form a mixed jelly; (B) drying the mixed jelly to form a mixture, and then cold-pressing the mixture; (C ) The mixture is subjected to aging treatment. The aging treatment is heated to 180 degrees Celsius for two hours. After the mixture is cured, a ceramic composite material is formed; (D) After the ceramic composite material is heat-treated and densified, a carbon is formed The ceramic is used to make the friction member of the sheet.

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