Jekit Front Disc Brake Parts 362mm Cast Iron Drilled Line
Brand Name:Jekit
Model Number:brake disc
Minimum Order Quantity:1 set
Delivery Time:5-8 work days
Payment Terms:T/T, Western Union，paypal
Place of Origin:china
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Guangzhou China
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Room 302, Building 5, No. 7, Wu Alley, Laowu Street, Dongping Village, Yongping Street, Baiyun District, Guangzhou
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Jekit Car Brake Parts 362*32mm Cast Iron drilled line Disc For Front
Jekit brake disc heat treatment
Jekit brake discs are made of gray cast iron, which is a national
standard daily-use brake disc material. The following are the
advantages and disadvantages of gray-plated iron brake discs.
After the heat treatment of gray cast iron, it can only change the
matrix structure, not the shape of graphite, so it is impossible to
significantly improve the mechanical properties of gray cast iron.
The heat treatment of gray cast iron is mainly used to eliminate
the internal stress and white structure of the casting, stabilize
the size, improve the cutting performance, and increase the surface
hardness and wear resistance.
Gray cast iron is a type of cast iron. Carbon exists in cast iron in the form of flake graphite. The fracture is gray. It has good casting and cutting performance and good wear resistance. It has excellent vibration damping, low notch sensitivity and high wear resistance.
Relieve internal stress annealing
It is used to eliminate the casting stress caused by uneven cooling
of the casting during the solidification process, and prevent the
casting from deformation and cracks. The process is to heat the
casting to 500-600°C, and then slowly cool it with the furnace to
below 150-200°C after holding it for a period of time, and then air
cooling. Sometimes the casting is placed in a natural environment
for a long period of time to relax the internal stress of the
casting. This method is called "natural aging", and large gray iron
castings can use this method to eliminate casting stress.
Graphitization annealing
In order to eliminate the white mouth structure, reduce the
hardness, and improve the cutting performance. The method is to
heat the casting to 850～900℃, keep it for 2～5 hours, then slowly
cool it to 400～500℃ with the furnace, and then air-cool it out of
the furnace to decompose the cementite to form graphite during the
heat preservation and slow cooling process.
Surface hardening
Improve surface hardness and extend service life. For example, for
the working surface of gray cast iron parts such as the surface of
the machine tool guide rail and the inner wall of the cylinder
liner of the internal combustion engine, higher hardness and wear
resistance are required, and the surface quenching method can be
used. Commonly used methods are high (medium) frequency induction
heating surface quenching and contact resistance heating surface
quenching.
Gray iron is widely used in various fields, and has won the favor of major merchants with low cost and high performance. There are many types of gray-plated iron brake discs with different styles. But each one is deeply loved by all buyers. Among them, this linear brake disc is very popular among Asian buyers.
Product parameter
| Product Name | Car brake disc |
| Disc Type | Drilled Line |
| Disc Size | 362*32mm |
| Quality | 100% Tested |
| Application | Auto Brake Part |
| MOQ | 1 pair |
| Package | Neutral Packing 20*20*20cm |
reference picture
Jekit Front Disc Brake Parts 362mm Cast Iron Drilled Line
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