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Forging method of multi-step roller with circular truncated cone

A conical truss and step technology, applied in the field of multi-step roll preparation, can solve the problems of waste of raw materials, long machining time, large forging allowance, etc., to reduce the difficulty of operation, improve the quality of the core, and improve the metal streamline Effect

Active Publication Date: 2020-09-11
建龙北满特殊钢有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem with this forming method is that the forging allowance is large, and the follow-up machining time is long and the waste of raw materials is serious.

Method used

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  • Forging method of multi-step roller with circular truncated cone
  • Forging method of multi-step roller with circular truncated cone
  • Forging method of multi-step roller with circular truncated cone

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] A forging method of a multi-stage stepped roll with a conical truncated roll, the process flow of the forging method of a multi-stage stepped roll with a conical truncated truncated steel ingot → press the jaw → first upsetting → first time Drawing the oblong billet → upsetting for the second time → drawing the oblong billet for the second time → drawing the oblong billet for the third time → half-die forging with a special upper anvil → pressing table, finishing each part to the finished product size → For heat treatment, the special-purpose upper anvil is an upper flat-slope anvil, and the angle between the bottom edge of the upper flat-slope anvil and the horizontal plane is equal to the angle of the truncated cone of a multi-stage stepped roll with a truncated cone.

[0028] The forging method of a multi-stage stepped roll with a conical truncated roll described in this embodiment adopts a 30MN hydraulic press for forging, and the steel ingot weighs 10.3 tons.

[00...

specific Embodiment approach 2

[0043] A forging method of a multi-stage stepped roll with a conical truncated roll, the process flow of the forging method of a multi-stage stepped roll with a conical truncated truncated steel ingot → press the jaw → first upsetting → first time Drawing the oblong billet → upsetting for the second time → drawing the oblong billet for the second time → drawing the oblong billet for the third time → half-die forging with a special upper anvil → pressing table, finishing each part to the finished product size → For heat treatment, the special-purpose upper anvil is an upper flat-slope anvil, and the angle between the bottom edge of the upper flat-slope anvil and the horizontal plane is equal to the angle of the truncated cone of a multi-stage stepped roll with a truncated cone.

[0044] The forging method of a multi-stage stepped roll with a conical truncated roll described in this embodiment, the described forging method of a multi-stage stepped roll with a conical truncated ro...

specific Embodiment approach 3

[0056] A forging method of a multi-stage stepped roll with a conical truncated roll, the process flow of the forging method of a multi-stage stepped roll with a conical truncated truncated steel ingot → press the jaw → first upsetting → first time Drawing the oblong billet → upsetting for the second time → drawing the oblong billet for the second time → drawing the oblong billet for the third time → half-die forging with a special upper anvil → pressing table, finishing each part to the finished product size → For heat treatment, the special upper anvil is an upper flat-slope anvil, and the angle between the bottom edge of the upper flat-slope anvil and the horizontal plane is ≤ the angle of the truncated cone of the multi-step roller with a truncated cone.

[0057] The forging method of a multi-stage stepped roll with a conical truncated roll described in this embodiment, the described forging method of a multi-stage stepped roll with a conical truncated roll adopts a 30MN hyd...

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Abstract

The invention relates a forging method of a multi-step roller with a circular truncated cone, and belongs to the technical field of preparation of multi-step rollers. The forging method aims to achieve the technical effects of improving the first pass yield and quality of a forging. The technological process comprises the steps of steel ingot heating, jaw pressing, primary upsetting, primary roundblank drawing, secondary upsetting, secondary round blank drawing, tertiary round blank drawing, half die forging through a special upper anvil, table pressing, finishing of all parts to the size ofa finished product and heat treatment in sequence, wherein the special upper anvil is an upper flat slope anvil, the angle between the bottom edge of the upper flat slope anvil and the horizontal plane is smaller than or equal to the angle of the circular truncated cone of the multi-step roller with the circular truncated cone, a 30MN hydraulic press is adopted in the forging method for forging, and the weight of a steel ingot is 10.3 tons. According to the forging method, the metal flow line of the forging is better, and the first pass yield reaches 95% or above. The forging method is used for forging the multi-step roller.

Description

technical field [0001] The invention belongs to the technical field of multi-step roll preparation, and in particular relates to a forging method of a multi-step roll with a conical frustum. Background technique [0002] Free forging is a processing method that uses impact force or pressure to cause plastic deformation of metal blanks on the anvil or between the upper and lower anvils of the forging press to obtain forgings. Compared with casting products, free forging can not only eliminate the defects such as shrinkage cavity, porosity, and pores that may be caused by casting products, but also refine the grains to improve the mechanical properties of the product. Free forging relies on manual operation to control the shape and size of the forging, so the precision of the forging is low, the machining allowance is large, the labor intensity is high, and the productivity is not high, so it is mainly used in single piece and small batch production. In the field of free forg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/06B21J5/08B21J9/12B21J13/06B21K29/00B21B27/02
CPCB21B27/02B21J5/002B21J5/06B21J5/08B21J9/12B21J13/06B21K29/00
Inventor 牛震刘鹏宇雷玉臣郑福胜孟祥英赵晓君刘占东蒋伟斌黄宪军
Owner 建龙北满特殊钢有限责任公司
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