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A Forging Method for Reducing the Weight of Arched Plate Forgings for Coiler Drums

An arched plate and forging technology is applied in the field of forging to reduce the weight of arched plate forgings for coiler reels, and can solve the problems of excess blank forgings, high forging manufacturing cost, low production efficiency, etc. Small margin, improved production efficiency, and reduced manufacturing costs

Active Publication Date: 2020-01-31
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

[0004] The weight of the flat arched plate rough forgings produced by the existing forging process is about 2.8 tons. After processing by boring machines, milling machines and other equipment, the weight of the finished arched plates is about 1.2 tons, and the weight of the rough forgings reaches twice the weight of the net size. Above, the material consumption is large, and the manufacturing cost of forging is high; one steel ingot produces one arched plate, and the blank forging has a lot of surplus material, the processing cycle is long, and the production efficiency is low.

Method used

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  • A Forging Method for Reducing the Weight of Arched Plate Forgings for Coiler Drums
  • A Forging Method for Reducing the Weight of Arched Plate Forgings for Coiler Drums
  • A Forging Method for Reducing the Weight of Arched Plate Forgings for Coiler Drums

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Embodiment 1

[0026] combine Figure 1-Figure 6 As shown, this embodiment discloses a forging method for reducing the weight of an arched plate forging for a reel of a coiler. The method includes the following steps:

[0027] Step a: Steel ingot upsetting: smelting by electric furnace, the proportion of molten iron or pig iron in each furnace is ≥30%, the tapping temperature is ≥1590°C, w[P]≤0.005%. During the tapping process, add 40kg of deoxidizer aluminum ingot and calcium carbide each, add compound refining slag according to ≥200kg per furnace, add lime ≥80kg per furnace, and put 80kg of top slag modifier on the slag surface after tapping; The oxidized slag is brought down; the following slag must be slag dumped and slag removed; after the smelting is completed, it enters the LF furnace for refining, and the molten steel is fed to the LF furnace refining station to feed the aluminum wire at a distance of 200 to 300 meters. The refining process uses Al particles and C powder to diffuse ...

Embodiment 2

[0038] A specific embodiment of a forging method for reducing the weight of an arched plate forging for a reel of a coiler comprises the following steps:

[0039] Step 1: electric furnace smelting: the ratio of molten iron or pig iron to each furnace is ≥30%.

[0040] Step 2: Tapping temperature ≥ 1590°C, [P] ≤ 0.005%. During the tapping process, add 40kg of deoxidizer aluminum ingot and calcium carbide, add compound refining slag at a rate of ≥200kg per furnace, add lime ≥80kg per furnace, and put 80kg of top slag modifier on the slag surface after tapping.

[0041] Step 3: It is strictly forbidden to take off the oxide slag when the steel is tapped from the primary smelting furnace. The following slag must be slag dumped and slag removed.

[0042]Step 4: Feed the molten steel to the refining station of the LF furnace with aluminum wires of 200 to 300 meters. During the refining process, Al particles and C powder are used for diffusion deoxidation, and Cr-Fe alloys, Mo-Fe a...

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Abstract

The invention relates to the technical field of metallurgy manufacturing, in particular to a forging method for reducing the weight of an arched plate forged piece for a coiler coiling block. The method comprises the following steps of a, steel ingot upsetting, b, round blank manufacturing through drawing, c, arched blank manufacturing through drawing, d, annealing and e, forming of the arched plate forged piece through sawing and dividing. Arched plates are forged through the method, the process weight of the forged piece can be reduced, and therefore the manufacturing cost is reduced; and the machining period is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgical manufacturing, in particular to a forging method for reducing the weight of an arched plate forging for a coiler reel. Background technique [0002] The hot-rolled coiler reel is an important equipment of the hot-rolled strip coiler, and the coiling temperature is generally between 550 and 850°C. The coiler reel is mainly composed of a hollow shaft, a wedge-shaped shaft, an arched plate, a continuous Rod, plunger, expansion and contraction cylinder and other components, among which the arched plate is the key part on the reel of the coiler, and each reel is composed of four arched plates to form a cylinder, and the material grade of the arched plate is generally 2Cr12NiMoWV Stainless heat-resistant steel, directly in contact with the hot-rolled strip in the red-hot state, bears the load of alternating thermal stress. According to the characteristics of the structure of the arched plate, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J1/06B21J5/08B21J5/06B23P15/00
CPCB21J1/06B21J5/002B21J5/06B21J5/08B23P15/00
Inventor 杨云志刘洪波姚凤祥李艾董贵文刘光辉李彬翟书研徐咏梅刘贵明
Owner 建龙北满特殊钢有限责任公司
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