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A manufacturing method of fan-shaped plate forgings for reels of economical coilers

A manufacturing method and a fan-shaped plate technology, which are applied in the field of metallurgical machinery manufacturing, can solve the problems that the manufacturing cost of the fan-shaped plate affects the economic benefits of steel rolling, the complex forging cylinder process, and the inability to produce a single piece, so as to reduce the amount of raw materials and shorten the machining process. Time, production flexible effects

Active Publication Date: 2020-02-18
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 disadvantage of the second method is that the steel ingot is subjected to the upsetting-punching-reaming-extending process by a press, and the forging into a cylindrical forging needs to be cut into 4 fan-shaped slabs with a band saw, and finally processed by a lathe
The process of forging the cylinder is complicated. Each cylinder forging needs to be cut into 4 fan-shaped slabs with a band saw, which cannot be produced in one piece.
[0005] The fan-shaped plate is a consumable part of the coiler, which is easy to wear during use, so the manufacturing cost of the fan-shaped plate directly affects the economic benefits of rolling steel production

Method used

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  • A manufacturing method of fan-shaped plate forgings for reels of economical coilers
  • A manufacturing method of fan-shaped plate forgings for reels of economical coilers
  • A manufacturing method of fan-shaped plate forgings for reels of economical coilers

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specific Embodiment approach 1

[0045] A method for manufacturing a fan-shaped plate forging for an economical coiler reel, comprising the following steps:

[0046] Step a, pouring the molten steel after converter smelting, LF furnace refining, and VD vacuum degassing into 42CrMoA continuous casting round billets, after off-line, fire-cutting, slow cooling, and standby;

[0047] Step b. Put the 42CrMoA casting continuous casting round billet obtained in step a into a gas heating furnace for heating, and then forge after being out of the furnace. For the first fire, use an upper flat anvil and a large platform for upsetting. After upsetting, the first Return to the furnace for heating for the first time, use the upper flat anvil and lower V-shaped anvil for forging for the second time of forging, and then return to the furnace for heating for the second time after drawing, and use the upper arc-shaped anvil and small platform for the third time of forging. fan-shaped, and then use the upper flat anvil and sma...

specific Embodiment approach 2

[0070] A method for manufacturing a fan-shaped plate forging for an economical coiler reel, comprising the following steps:

[0071] Step a, pouring the molten steel after converter smelting, LF furnace refining, and VD vacuum degassing into 42CrMoA continuous casting round billets, after off-line, fire-cutting, slow cooling, and standby;

[0072] Step b. Put the 42CrMoA casting continuous casting round billet obtained in step a into a gas heating furnace for heating, and then forge after being out of the furnace. For the first fire, use an upper flat anvil and a large platform for upsetting. After upsetting, the first Return to the furnace for heating for the first time, use the upper flat anvil and lower V-shaped anvil for forging for the second time of forging, and then return to the furnace for heating for the second time after drawing, and use the upper arc-shaped anvil and small platform for the third time of forging. fan-shaped, and then use the upper flat anvil and sma...

specific Embodiment approach 3

[0076] According to the manufacturing method of a saving-type coiler reel fan-shaped plate forging described in the second specific embodiment, the converter smelting in step a is equipped with a molten iron ratio ranging from 85% to 90%, and a steel scrap ratio of 10% to 15% %, tapping C content ≥ 0.20wt%, P content ≤ 0.005wt%, tapping temperature ≥ 1630°C, adding deoxidizer aluminum ingot 8Kg / t during tapping, adding compound refining slag 200-300Kg, lime 500- 700Kg, put 120Kg top slag modifier on the slag surface after tapping (composite refining slag: model: 1847-18-01-20, manufacturer Henan Xibao Smelting Material Group Co., Ltd.; top slag modifier: model 6438- 17-06-23, manufacturer: Yingkou Golden Lion Special Resistance Co., Ltd.).

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Abstract

The invention discloses a manufacturing method for a fan-shaped plate forge piece for an economical type coiling machine reel, and belongs to the technical field of metallurgical mechanical manufacturing. The manufacturing method comprises the following steps of: pouring molten steel which is subjected to converter smelting, LF furnace refining and VD vacuum degassing into a continuous casting round billet; carrying out cracking off, cutting and slow cooling after unloading, putting the round billet into a fuel gas heating furnace to heat, carrying out forging after discharging, carrying out upsetting by using an upper flat anvil and a large platform for the first heating number of forging, , carrying out forging for drawing out by using the upper flat anvil and a lower V-shaped anvil forthe second heating number of forging, carrying out forging to obtain a fan shape by using an upper arc-shaped anvil and a small platform for the third heating number, finishing and straightening the two end surfaces of the fan-shaped plate by using the upper flat anvil and the small platform, continuously forging the round billet until a fan-shaped dimension of a process design, carrying out annealing, and adopting an ultrasonic flaw detector to perform nondestructive flaw detection, thereby manufacturing a finished product. The manufacturing method reduces the fan-shaped plate raw material input and the forge piece blank process weight, realizes flexible production for a single part and multiple parts, shortens the machining period, and reduces the manufacturing cost of the fan-shaped plate forge piece.

Description

technical field [0001] The invention belongs to the technical field of metallurgical machinery manufacturing; in particular, it relates to a method for manufacturing a fan-shaped plate forging for an economical coiler drum. Background technique [0002] The cold-rolled coiler reel is an important equipment of the cold-rolled strip coiler. The coiler reel is mainly composed of a hollow shaft, a wedge-shaped shaft, a fan-shaped plate, a connecting rod, a plunger, and an expansion-shrinking oil cylinder. The fan-shaped The plate is a key part on the reel of the coiler (such as figure 1 As shown), each reel consists of four fan-shaped plates to form a cylinder, and the material grade of the fan-shaped plates is generally structural steel 42CrMoA, which can bear the load of alternating stress. According to the characteristics of the structure of the fan-shaped plate, there are currently two main forming methods for the fan-shaped plate forging billet: [0003] Method 1: Use a p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 贾俊林
Owner 建龙北满特殊钢有限责任公司
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