Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece

An EH36, bearing seat technology, applied in the field of plate bearing seat forgings, can solve problems such as failure to meet product design requirements

Active Publication Date: 2014-04-23
宝鼎重工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing rolling equipment and rolling methods

Method used

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  • Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece
  • Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece
  • Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: with reference to accompanying drawing 1. A special process for free forging EH36 steel ingots into plate-shaped bearing seat forgings. On the premise of obtaining qualified raw materials, the process specification must include the following:

[0035] 1. Heating specifications - furnace loading temperature, heating speed and holding time, and furnace temperature.

[0036] Steel ingot with 17〞square section is used, the furnace temperature is not higher than 350±10℃, and the temperature rises with the furnace. During the heating process, when the furnace temperature rises to 900±10℃, keep it warm for 2 hours, and then heat it to the initial forging temperature of 1200±10℃ Heat at 10°C for 1 hour and take out.

[0037] 2. Deformation process—including forging equipment, deformation process, material deformation degree and forging ratio, steel ingot upsetting, punching and leveling, correction until the forging is completed, removal of steel ingot bottom and...

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PUM

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Abstract

The invention relates to a special process for freely forging a plate material, namely, EH36 optimized material steel ingot, into a plate-shaped bearing seat forged piece with the thickness of 250mm, and the mechanical property of a rolled steep plate which is much thinner than that of the rolled steel plate can be achieved although the thickness of the rolled steel plate cannot be achieved. The material comprises the following components in percentage by mass: less than or equal to 0.18% of C, 0.15-0.40% of Si, 1.20-1.60% of Mn, less than or equal to 0.015% of S, less than or equal to 0.020% of P, less than or equal to 0.35% of Cu, less than or equal to 0.20% of Cr, less than or equal to 0.40% of Ni, 0.05-0.10% of Nb, 0.05-0.10% of V, less than or equal to 0.02% of Ti, less than or equal to 0.08% of Mo, 0.02-0.03% of Al and the balance of Fe.

Description

technical field [0001] The invention relates to a plate-shaped bearing housing forging with a thickness of 250mm by forging a steel ingot with an optimized material EH36 to achieve a thickness that cannot be achieved by steel plate rolling, but can achieve the mechanical advantages of a much thinner rolled steel plate. A special process of EH36 optimized material steel ingot free forging into plate-shaped bearing seat forgings. Background technique [0002] EH36 is a material for structural steel used in ships and ocean engineering. This material has excellent low temperature toughness and welding performance. Plates and section steel with a diameter not greater than 50mm are mainly processed through rolling + post-rolling heat treatment. With the continuous development of the ocean to the deep sea, the requirements for marine equipment are getting higher and higher. In order to meet the requirements of deep sea equipment, according to the design requirements, the thickness...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C38/50C22C38/48C22C38/38C22C38/28C22C38/26C22C38/16C22C38/14C22C38/12C21D8/00C21D1/25
Inventor 冷怡恺陈聪潘敦旺陈江忠管子弘
Owner 宝鼎重工有限公司
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