Welding device for fracture of large inclined roll shaft of ring rolling mill and repairing process of welding device

A technology of welding device and inclined roll, which is applied in auxiliary devices, welding accessories, welding equipment, etc., can solve problems such as fracture, and achieve the effects of low investment, high work efficiency and good stability

Active Publication Date: 2021-06-11
ANHUI MA STEEL EQUIP MAINTENANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the application of welding repair for wear, fracture and fall-off of various roll shafts is relatively common, and there are various descriptions of off-line repair in many literatures, but there are no public reports on the repair of large-scale inclined roll shaft fracture welding in ring rolling mills. , the main difficulty in welding repair of large inclined roll shaft fracture in ring rolling mill is to strictly control the welding line energy, fusion ratio, preheating, postheating, interlayer temperature, and the adjacent base metal, transition layer and cemented carbide during welding construction. The metallurgical bonding of the base weld bead and the key process parameters such as filling thickness are used to solve the fracture welding defect of the large inclined roll shaft of the ring rolling mill

Method used

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  • Welding device for fracture of large inclined roll shaft of ring rolling mill and repairing process of welding device
  • Welding device for fracture of large inclined roll shaft of ring rolling mill and repairing process of welding device
  • Welding device for fracture of large inclined roll shaft of ring rolling mill and repairing process of welding device

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Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 5 As shown, the present invention is a large-scale oblique roll shaft fracture welding device for a ring rolling mill, which includes a structural member fixing bracket 2, a pair of fixed structural member tooling 3 and a heating tooling 4; the structural member fixing bracket 2 is used to place obliquely The roller shaft 1 can also make the skewed roller shaft 1 rotate arbitrarily on the structural member fixing bracket 2, and the skewed roller shaft 1 is generally placed on the structural member fixing bracket at an angle of 45 degrees; the pair of fixed structural member tooling 3, It is used to pair and fix the broken part of the skewed roller shaft 1 and control the deformation during the welding process, which is suitable for the shape of the front end of the skewed roller shaft 1; the heating tool 4 is used for welding the broken part of the skewed roller shaft 1 Pre-heating and post-welding heat treatment.

[0042] In this embodiment...

Embodiment 2

[0046] Such as Figure 1 to Figure 5 As shown, based on the repair process of a large-scale skewed roll shaft fracture welding device in a ring rolling mill described in Example 1, it is used for welding repair of the broken skewed roll shaft 1, and the broken skewed roll shaft 1 is broken after long-term operation. The front end 12 of the broken shaft and the shaft connection part 11 are formed. The joint between the front end 12 of the broken shaft and the shaft connection part 11 is the broken part to be repaired. The steps of the welding repair process are as follows:

[0047] Step 1. Pre-treatment of weldment welding; firstly, the front end 12 of the broken shaft and the connecting part 11 of the shaft are respectively provided with groove surfaces at the broken parts to be repaired, and then the front side of the inclined roller shaft 1 is placed on the structural member fixing bracket 2 at an angle of 45° On the roller 24 of the U-shaped bracket, the rear end of the ske...

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Abstract

The invention discloses a welding device for fracture of a large inclined roll shaft of a ring rolling mill. The welding device comprises a structural part fixing support, a structural part assembling and fixing tool and a heating tool, wherein the structural part fixing support is used for obliquely placing the inclined roll shaft and enabling the inclined roll shaft to freely rotate on the structural part fixing support; the structural part assembling and fixing tool is used for assembling and fixing the fractured part of the inclined roll shaft and controlling the deformation amount in the welding process; and the heating tool is used for heating the fractured part of the inclined roll shaft. A welding repairing process based on the welding device for the fracture of the large inclined roll shaft of the ring rolling mill is further disclosed. Through the implementation of the device and the process, a large amount of maintenance time can be shortened, the maintenance cost is reduced, the failure rate and shutdown loss are reduced, and a guarantee is provided for reasonable grouping production.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a large-scale inclined roll shaft fracture welding device of a ring rolling mill and a repairing process thereof. Background technique [0002] The production process of Maanshan Iron and Steel's various specifications of ring parts is that the qualified raw material steel ingots are cut into required lengths by machine tools, and the cut steel ingots are heated by the heating ring furnace to reach the process temperature, and are clamped by mobile manipulators to the pier thickness of the hydraulic press. And piercing, and then the steel ingot is clamped by a fixed manipulator and sent to the ring rolling mill for rolling and forming. The ring rolling mill is mainly composed of a vertical rotating main roll, a horizontally movable upper and lower skewed roll shaft and holding rolls. The vertical rotating main roll and holding roll mainly control the wall thickness and diameter of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/047B23K9/235B23K9/32
CPCB23K37/047B23K9/235B23K9/32
Inventor 范兴海辛昌杰杨西钟凛杨守兴戴毅陶俊张玉
Owner ANHUI MA STEEL EQUIP MAINTENANCE CO LTD
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