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One-step forging and molding method of steering knuckle of heavy-duty car

A heavy-duty vehicle and forging forming technology, which is applied to vehicle parts, railway car body parts, transportation and packaging, etc. It can solve the problems of large one-time investment in equipment, large tonnage of forging machine tools, and many connection auxiliary facilities, etc., to achieve high production efficiency , less forging equipment and high degree of automation

Active Publication Date: 2012-06-20
SHAANXI AOBANG FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has high efficiency and low manufacturing cost for a single product, but it has the following disadvantages: a) The tonnage of forging machine tools required is large, and the one-time investment in equipment is too large
It has high production efficiency and pass rate, but it has the following disadvantages: A) It uses a lot of equipment, and there are many auxiliary facilities for the connection between equipment
B) There are too many equipments, and the transport of heated workpieces between equipments will cause heat loss and waste energy
C) Large investment in equipment

Method used

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  • One-step forging and molding method of steering knuckle of heavy-duty car
  • One-step forging and molding method of steering knuckle of heavy-duty car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] ■Inspection: Put the bar on the conveyor belt, let the bar pass through the end of the feeding belt in turn, install the XH91-ZWCF-II intelligent material hardness non-destructive sorting instrument, and the non-destructive sorting instrument mixes the material through the PLC preset value , heat treatment hardness, carbon content, surface hardening degree, heat treatment state, cracks, etc. are directly analyzed and sorted, and the number of bars is recorded. Qualified bars are sent to the blanking process, waiting for blanking.

[0022] ■Blanking: cut the qualified bar after inspection into the specified size and put it into the tiltable box, and transport it to the heating process.

[0023] ■Heating: The material lifting device sends the bars in the tiltable box into the step-type intermediate frequency heating furnace in turn, and the step-type intermediate frequency heating furnace pushes the materials out of the furnace body according to the production rhythm of f...

Embodiment 2

[0032] ●Inspection: Put the bar on the conveyor belt, let the bar pass through the end of the feeding belt in turn, install the XH91-ZWCF-II intelligent material hardness non-destructive sorting instrument, the non-destructive sorting instrument mixes the material through the value preset by PLC , heat treatment hardness, carbon content, surface hardening degree, heat treatment state, cracks, etc. are directly analyzed and sorted, and the number of bars is recorded. Qualified bars are sent to the blanking process, waiting for blanking.

[0033] ●Blanking: cut the qualified bar after inspection into the specified size and put it into the tiltable box, and transport it to the heating process.

[0034] ●Heating: The material lifting device sends the bars in the tiltable box into the step-type intermediate frequency heating furnace in sequence, and the step-type intermediate frequency heating furnace pushes the material out of the furnace body according to the production rhythm of...

Embodiment 3

[0043] ◆Inspection: Put the bar on the conveyor belt, let the bar pass through the end of the feeding belt in turn, install the XH91-ZWCF-II intelligent material hardness non-destructive sorting instrument, the non-destructive sorting instrument mixes the material through the preset value of PLC , heat treatment hardness, carbon content, surface hardening degree, heat treatment state, cracks, etc. are directly analyzed and sorted, and the number of bars is recorded. Qualified bars are sent to the blanking process, waiting for blanking.

[0044] ◆Blanking: cut the qualified bars into the specified size and put them in the tiltable box, and transport them to the heating process.

[0045] ◆Heating: The material lifting device sends the bars in the tilting box into the step-type intermediate frequency heating furnace in sequence. According to the temperature of the discharge, the discharge device will divide the material into qualified and unqualified according to the temperature...

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Abstract

The invention provides a one-step forging and molding method of a steering knuckle of a heavy-duty car. The technical scheme provided by the invention is as follows: a warm forging process is adopted and the method successively comprises the following steps of: checking, baiting (a sawing machine), heating, roughly forging, extruding, pre-forging, carrying out finish forging, cutting edges and correcting, wherein in the heating step, a forging temperature rises in a range of 1100-1200 DEG C through heating and the temperature environment of the finish forging is in a range of 750-850 DEG C. Preferably, the forging temperature of the heating section is 1180 DEG C. Preferably, the finish forging temperature is 800 DEG C. The one-step forging and molding method provided by the invention has the beneficial effects that: in a machining process, the method is energy-saving, fast in temperature-rising speed and high in automation degree; and in a forging process: the method has the advantages of fewer forging equipment, reduced investment, high automation degree, high efficiency, and capabilities of reducing the temperature reduction when a work piece runs in an equipment room, and ensuring the temperature of the finish forging, namely ensuring the machining precision of the work piece; and the production efficiency is high.

Description

[0001] Technical field: This process is used in the field of thermal processing, it is used for forging forming of steering knuckles of heavy vehicles, and is a method for one-time forging and forming of steering knuckles of heavy vehicles. Background technique: [0002] The function of the steering knuckle is to bear the front load of the car, support and drive the front wheel to rotate around the kingpin to make the car turn, and it is a car security part. Therefore, its manufacture has strict requirements on materials and manufacturing processes. The steering knuckle of heavy-duty vehicles is made of 42CrMo medium carbon alloy steel. In order to eliminate the as-cast looseness of the metal and obtain excellent metal structure and mechanical properties. Must be forged. At present, most of the steering knuckles of heavy-duty vehicles adopt the following molding process: 1) Using a large-tonnage hot die forging press, multi-station molding at one time. It has high efficienc...

Claims

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Application Information

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IPC IPC(8): B21K7/12
Inventor 罗来卫
Owner SHAANXI AOBANG FORGING
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