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Casting process of trailer spindle head

A casting process and axle technology, which is applied in the casting process field of the trailer axle head, can solve the problems of low strength and easy damage of the axle head, and achieve the effect of strong fatigue resistance, avoiding metal oxidation, and ensuring product quality

Inactive Publication Date: 2017-06-30
张建帮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The trailer axle is a follower axle, which bears the weight of the vehicle and the cargo load, and is used to support the rotation of the tire. It mainly includes the axle body, wheel hub, brake drum, brake shoe assembly, and camshaft assembly. The axle body is divided into axle tubes The hub and the brake drum assembly are assembled on the shaft heads at both ends of the shaft body to perform wheel rotation and braking. The brake shoe assembly is installed in the brake drum. The brake pads are assembled by Made of asbestos-free friction and environmental protection materials, inner and outer bearings are installed between the axle head and the hub, and are installed and fixed by the axle head nut assembly. The existing trailer axle head has low strength and is easy to damage

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] A casting process for a trailer axle head, comprising the following steps:

[0022] S1. Furnace cleaning: clean the furnace used to make the furnace free of impurities, and dry it after cleaning;

[0023] S2. Raw material smelting: Put the shaft head casting raw material into the melting furnace for smelting. The purity of the shaft head casting raw material is not less than 99.8%. Now heat up to 500-550°C and keep it for 10min, then raise the temperature to 1500°C-1800°C ;

[0024] S3. Raw material pouring: Nitrogen gas is introduced, pressurized on the metal liquid surface, so that the metal liquid enters the mold through the riser pipe and crystallizes into a billet. The pouring process ensures the airtightness of the furnace and the mold. The gas pressure is 30-50KPa, and the metal Liquid rising speed is 9-10mm / s;

[0025] S4. Riser feeding: a riser is set between the inner hole of the shaft head and the outer frame. After pouring, the thin wall and the lower part...

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PUM

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Abstract

The invention discloses a casting process of a trailer spindle head. The casting process comprises the following steps of (S1) cleaning a smelting furnace; (S2) smelting raw materials; (S3) pouring the raw materials; (S4) feeding from a riser; (S5) cooling and demolding; (S6) detecting the surface of a casting; (S7) detecting the interior of the casting; and (S8) polishing the casting. Compared with a conventional trailer spindle head, low-pressure casting at 30 to 50 KPa is adopted, so that the yield is high, the intensity is high, and the anti-fatigue capability is high; nitrogen protection is adopted, so that metal oxidation is avoided; the feeding is implemented through the riser, so that the defects of shrinkage cavities, shrinkage porosity and the like of the casting are greatly eliminated; and the inner surface of the casting is fully detected, so that the product quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of trailer hubs, in particular to a casting process for trailer hubs. Background technique [0002] With the deepening of the market economy, the road transportation industry has made great progress, and the scope of use of ordinary trailers is becoming wider and wider. The trailer axle is a follower axle, which bears the weight of the vehicle and the cargo load, and is used to support the rotation of the tire. It mainly includes the axle body, wheel hub, brake drum, brake shoe assembly, and camshaft assembly. The axle body is divided into axle tubes The hub and the brake drum assembly are assembled on the shaft heads at both ends of the shaft body to perform wheel rotation and braking. The brake shoe assembly is installed in the brake drum, and the brake pads are made of It is made of non-asbestos frictional and environmentally friendly materials. Internal and external bearings are installed between the ax...

Claims

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Application Information

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IPC IPC(8): B22D18/04
CPCB22D18/04
Inventor 张建帮
Owner 张建帮