Casting method and device for braking disc body and braking disc body made by same

A technology of brake disc and disc body, applied in the direction of brake disc, manufacturing tools, casting and molding equipment, etc., can solve the problems of no feeding system, shrinkage cavity and shrinkage of castings, etc., to reduce production costs, reduce production costs, The effect of increasing usage

Active Publication Date: 2014-11-12
CHINA MACHINERY IND PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model realizes that each group of sand molds can cast four blanks at the same time, which improves the production efficiency. However, there is no feeding system in the sand mold, which may cause a large number of shrinkage cavities, slag inclusions, pores, cracks, etc. in the casting. defect

Method used

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  • Casting method and device for braking disc body and braking disc body made by same
  • Casting method and device for braking disc body and braking disc body made by same
  • Casting method and device for braking disc body and braking disc body made by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Taking the high-speed train cast steel brake disc body (with an outer diameter of 600 mm and an inner diameter of 240 mm) as an example, the process flow of the casting method suitable for the production of the molding line is as follows: figure 1 As shown, it includes the following steps in sequence:

[0054] (1) The casting process and casting device of the brake disc body are simulated and analyzed by computer simulation software, and the positions of the gating system and the feeding system are determined. The sprue cup of the gating system is replaced by the riser 2 of the feeding system, and the metal The liquid is directly poured from the riser 2, the center of the riser 2 is placed at the geometric center of the casting 1, and the molten metal flows from the geometric center of the casting 1 to the surroundings;

[0055] (2) According to the simulation analysis results of step (1), formulate the casting process of the brake disc body, adopt the method of introdu...

Embodiment 2

[0072] Taking the high-speed train cast steel brake disc body (with an outer diameter of 610 mm and an inner diameter of 240 mm) as an example, the process flow of the casting method suitable for the production of the molding line is as follows: figure 1 As shown, it includes the following steps in sequence:

[0073] (1) The casting process and casting device of the brake disc body are simulated and analyzed by computer simulation software, and the positions of the gating system and the feeding system are determined. The sprue cup of the gating system is replaced by the riser 2 of the feeding system, and the metal The liquid is directly poured from the riser 2, the center of the riser 2 is placed at the geometric center of the casting 1, and the molten metal flows from the geometric center of the casting 1 to the surroundings;

[0074] (2) According to the simulation analysis results of step (1), formulate the casting process of the brake disc body, adopt the method of introdu...

Embodiment 3

[0090]Taking the high-speed train cast steel brake disc body (with an outer diameter of 600 mm and an inner diameter of 260 mm) as an example, the casting method and casting device suitable for the production of the molding line are basically the same as in the first embodiment.

[0091] The riser 2 is cylindrical in shape with a diameter of 150 mm and a height of 150 mm. The pouring speed of molten metal in riser 2 is 25 cm / s, and the flow speed in casting 1 is 27 mm / s.

[0092] The outer side of the riser 2 is covered with a layer of ceramic fiber; the rectifying and filtering device 4 is made of ceramic bricks; the subsidy 2 is made of heat-insulating refractory material. There are six slag collecting exhaust rods 7, which are evenly distributed on the outside of the casting 1, and are connected with the slag collecting overflow sheets 6 on the upper and lower edges.

[0093] Non-destructive testing is carried out on castings, and at the same time, it meets the inspect...

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Abstract

The invention discloses a casting method and a casting device for a braking disc body and the braking disc body made by the method and the device. The casting process and the casting device for the braking disc body are simulated and analyzed by computer simulation software, the positions of a casting system and a feeding system are determined, a pouring cup is replaced by a feeder head, molten metal is directly poured through the feeder head, the center of the feeder head is positioned at the geometric center of a casting part, the molten metal is introduced from the top part of a cavity for top casting, and the molten metal directly enters the cavity through a rectifying and filtering device from the feeder head. The casting method of the braking disc body can achieve progressive solidification and complete feeding of the casting part, so as to effectively prevent the casting part from having defects such as shrinkage cavity, shrinkage porosity, sand hole, pore, slag eye, crack and the like during casting, ensure the isotropy of the performances of the casting part, and ensure batch production of the braking disc body; besides, the metal utilization rate is improved by 30-60%, the production cost is reduced by 30-50% and the working efficiency is improved by 40-60%.

Description

technical field [0001] The invention relates to a casting method, in particular to a casting method and device for a high-speed train cast steel brake disc body suitable for production on a molding line, and the brake disc body produced thereby. Background technique [0002] Brake discs are key components of high-speed trains and play an important role in train braking. Due to its complex and harsh working environment, it is inconvenient to maintain and replace. It is required that brake disc products must have stable quality and long service life. [0003] A large number of studies have shown that under the condition of a certain material, the main reason for the failure of the cast brake disc body is the casting defects such as shrinkage cavity, shrinkage porosity, sand hole and crack in the disc body. [0004] High-speed trains with a speed of more than 250km / h put forward higher requirements on the quality of the brake disc body, and the tolerance for casting defec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/20F16D65/12
Inventor 安朝阳
Owner CHINA MACHINERY IND PROD
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