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Formulation and technique for casting high-strength automobile brake wheel hub

A technology of automobile braking and casting technology, applied in the field of metal casting, can solve the problems of short service life of the wheel hub, and achieve the effect of improving the service life

Inactive Publication Date: 2009-08-26
遵义金业机械铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the defect of short service life of the existing automobile brake hub, appropriately increase the hardness, improve the wear resistance, improve the bending resistance, and enhance the mechanical strength to prolong the service life of the hub

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The high-strength automobile brake hub casting formula and process of the present invention, the specific implementation is as follows:

[0021] Add coke, limestone, steel scrap, newborn iron in the order of smelting materials, add 0.8% of the total metal weight of chromium, 0.09% of the total metal weight of vanadium, ferroalloy, returned iron, cycle in turn, and add to the feeding port Up to the lower edge of the bottom coke, the total weight of various metal layer materials is 200 kg, and the thickness of each layer of coke is 14cm. Adding weight is 30% of coke weight. After the furnace material is installed, preheat for 20 minutes and start blasting. During the blasting process, observe and control the combustion status in the furnace through the peephole of the tuyeres. The blasting is about 30 minutes to prepare for tapping. At this time, titanium (Ti) can be preset at the tapping point. In the trough, it is flushed into the ladle by the force of molten iron (wit...

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PUM

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Abstract

The invention is a high strength car brake wheel hub casting formula and the process thereof, adding three elements Chromium, Vanadium and Titanium into the gray cast iron main material in addition to the five mainly contained elements Carbon, Silicon, Phosphorus and Sulfur. The invention can improve rigidity, increase abrasion resistance, without thermal fatigue produced by braking or net cracks, increase tensile and flexural properties, and extend the life span of brake wheel hub more than double.

Description

1. Technical field [0001] The high-strength automobile brake hub casting formula and process of the present invention belong to metal casting, and the specific technical field belongs to the casting technology of gray cast iron to produce automobile brake hub. 2. Background technology [0002] In the existing formula for casting automobile brake hubs, the main material—gray cast iron with grade 250 (HT250) already has the main five major elements of carbon, silicon, manganese, phosphorus, and sulfur contained in it, and the content of these elements Controlled within a certain range of values, the vehicle hub produced by HT250 can basically meet the requirements of vehicle hub braking. However, with the continuous development of automobile technology in the direction of high speed and heavy load, frequent braking Higher requirements are put forward for the service life of automobile brake hubs. In the past, under low-speed and light-load conditions, brake hubs with good perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18B22D1/00
Inventor 苏黎杨方福吴春渝
Owner 遵义金业机械铸造有限公司