Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Road vehicle brake disc made of carborundum foamed ceramics/aluminum alloy composite materials and production method of road vehicle brake disc

A technology of foam ceramics and composite materials, applied in ceramic products, brake parts, applications, etc., can solve the problems of short life, poor thermal conductivity, poor thermal fatigue resistance, etc., and achieve improved service life, good thermal conductivity, improved resistance Effect of Thermal Fatigue Properties

Active Publication Date: 2014-12-24
SHIJIAZHUANG DONGDA HUITONG NEW MATERIAL CO LTD
View PDF13 Cites 46 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of cast steel and cast iron brake discs used for road vehicles, such as large mass, poor thermal conductivity, poor thermal fatigue resistance, and short service life, the invention provides a brake disc with small mass, short production cycle, fast heat dissipation, and good thermal stability. Silicon carbide foam ceramic / aluminum alloy composite material brake disc for various high-speed and heavy-duty road vehicles with stable movement, low noise, long service life, small deformation and convenient disassembly, and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Road vehicle brake disc made of carborundum foamed ceramics/aluminum alloy composite materials and production method of road vehicle brake disc
  • Road vehicle brake disc made of carborundum foamed ceramics/aluminum alloy composite materials and production method of road vehicle brake disc
  • Road vehicle brake disc made of carborundum foamed ceramics/aluminum alloy composite materials and production method of road vehicle brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Silicon carbide foam ceramic skeleton reinforced ZL111 aluminum matrix composite brake disc

[0086] Step 1: Preparation of the silicon carbide foam ceramic skeleton: use the precursor impregnation method to prepare the silicon carbide slurry prepared according to a certain ratio, and use the polyurethane foam precursor of 8~15ppi as the template to prepare the silicon carbide ceramic green body and dry it . Put the silicon carbide ceramic green body into a sintering furnace at 1950-2280°C, keep it warm for 0.5-3h, and sinter without pressure to obtain a silicon carbide foam ceramic block with a length of 400 mm, a width of 400 mm, and a thickness of 5-15 mm. which are cut to the desired shape (see attached figure 2 ) as a reinforcement for the friction layer. The porosity of silicon carbide foam ceramics is 40-60%, the mesh diameter is 1.5-4 mm, the mass percentage of silicon carbide in the silicon carbide foam ceramic skeleton is 90-99%, and the rest is boron carbi...

Embodiment 2

[0095] Silicon carbide foam ceramic skeleton reinforced 7075 aluminum matrix composite material brake disc

[0096] Step 1: Preparation of the silicon carbide foam ceramic skeleton: the slurry prepared according to a certain ratio is prepared into a ceramic green body by means of gel-injection molding and dried. Using the pressureless sintering method with a sintering temperature of 2000-2250 °C and a heat preservation of 1-3 hours, a silicon carbide foam ceramic block with a length of 300 mm, a width of 300 mm, and a thickness of 5-7 mm is obtained, which is cut into the required reinforcement by laser shape. The porosity of silicon carbide foam ceramics is 65%, the mesh diameter is 3~6 mm, the mass percentage of silicon carbide in silicon carbide foam ceramics is 96~99%, and the density of ceramic skeleton is 2.6~2.8 g / cm 3 , Vickers hardness (Hv) 18 GPa, flexural strength 10 MPa, compressive strength 5 MPa, thermal conductivity 130 W / (mK).

[0097]Step 2: Pretreatment of ...

Embodiment 3

[0105] Silicon carbide foam ceramic skeleton reinforced 5083 aluminum matrix composite material brake disc

[0106] Step 1: Preparation of the silicon carbide foam ceramic skeleton: the slurry prepared according to a certain ratio is prepared into a ceramic green body by three-dimensional printing forming method, and the shape is trimmed. Using the pressureless sintering method, the sintering temperature is 2200 °C, and the temperature is kept for 3 hours to obtain a silicon carbide foam ceramic block with a length of 300 mm, a width of 300 mm, and a thickness of 25 mm, which are cut into the required reinforcement shape by laser. The porosity of silicon carbide foam ceramics is about 60~70%, the mesh diameter is 2~5 mm, the mass percentage of silicon carbide in silicon carbide foam ceramics is 97%, and the density of ceramic skeleton is 2.9g / cm 3 , Vickers hardness (Hv) 20GPa, flexural strength 8-10MPa, compressive strength 45-50 MPa, thermal conductivity 120-130 W / (mK).

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Widthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a road vehicle brake disc made of carborundum foamed ceramics / aluminum alloy composite materials and a production method of the road vehicle brake disc. The body of the reinforced-aluminum-alloy brake disc with a carborundum foamed ceramics framework is made of reinforced aluminum alloy materials such as aluminum alloy or nano ceramics particles or carbon nano-tubes. The carborundum foamed ceramics framework is integrally casted on two symmetrical friction surfaces of the brake disc, and heat dissipation grooves or air holes can be casted or do not need to be casted on the friction surfaces. A plurality of heat dissipation ribs are casted in the peripheral direction of non-friction surfaces. Mounting holes are formed in the disc body. The production method includes the steps of production of the carborundum foamed ceramics framework, preprocessing of the framework, design and production of a casting mold of the brake disc, lower-pressure casting of the brake disc, heat treatment of the brake disc, precision processing of the brake disc and storage of a finished product. The brake disc is simple in production technology, light in weight, high and stable in friction factor, high in heat conductivity, long in service life and applicable to existing road vehicles.

Description

technical field [0001] The invention belongs to the technical field of brake disc manufacturing, in particular to a kind of Al / SiC used for road vehicles foam (that is, silicon carbide foam ceramics / aluminum alloy) composite brake disc and its preparation method. Background technique [0002] With the shortage of energy and the continuous increase of vehicle speed, the development of vehicle lightweight technology for the purpose of energy saving and weight reduction has attracted much attention. At present, the vast majority of automobile brake discs (drums) are still made of cast iron or cast steel. It is high density, which is not conducive to reducing the weight of the vehicle; poor thermal conductivity, resulting in excessive temperature rise of the friction surface during braking; large temperature gradient, easy to form hot spots and thermal cracks; all these will affect driving safety, increase fuel consumption and shorten Disadvantages of brake disc life Compared w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16D65/04F16D65/78F16D69/02B22D18/04C04B38/02C04B35/565C04B35/622
CPCB22D18/04C04B38/02F16D65/04F16D69/02
Inventor 房殊喻亮房明
Owner SHIJIAZHUANG DONGDA HUITONG NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com