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Welding auxiliary device and welding process for fractures of mandrel baffle plate of flat uncoiling machine

A technology for auxiliary devices and welding processes, which is applied in the direction of auxiliary devices, welding/cutting auxiliary equipment, welding equipment, etc., and can solve problems such as the difficulty of repairing local dropped blocks, and achieve the effects of small space occupation, good stability, and convenient production

Active Publication Date: 2021-06-15
ANHUI MA STEEL EQUIP MAINTENANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defects in the background technology that the shaft stop plate of the flat uncoiler mandrel is broken and it is difficult to repair the local block, the present invention proposes a welding auxiliary device and welding process for the shaft stop plate fracture of the flat uncoiler mandrel. Shaft, flat uncoiler mandrel shaft stop plate breakage, partial missing blocks are repaired by multi-functional micro-arc additive manufacturing machine surfacing welding, which saves maintenance time, reduces maintenance costs, reduces downtime losses, and provides a reasonable combination of production. Assure

Method used

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  • Welding auxiliary device and welding process for fractures of mandrel baffle plate of flat uncoiling machine
  • Welding auxiliary device and welding process for fractures of mandrel baffle plate of flat uncoiling machine
  • Welding auxiliary device and welding process for fractures of mandrel baffle plate of flat uncoiling machine

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Embodiment 1

[0046] Such as Figure 1 to Figure 5 As shown, the present invention is an auxiliary device for fracture welding of a flat uncoiler mandrel shaft stop plate, which includes a front end fixing bracket 3 and a rear oblique end fixing bracket 4; The arc shape is suitable for the shaft head of the mandrel to be repaired by welding; the rear inclined end fixing bracket 4 includes a main body supporting steel frame 41 in the shape of "H", and the "H" shape of the main body supporting steel frame 41 The upper part is welded with a shaft rod 43, and the shaft rod 43 is rotated with a supporting steel plate 44. The middle part of the supporting steel plate 44 is provided with a shaft hole, which is set on the shaft rod 3 and can be rotated left and right; the shape of "H" The two sides of the main body support steel frame 41 are respectively welded with "L" shaped side support steel frames 42, and the bottom of the side wing support steel frames 42 is flush with the "H" shaped bottom o...

Embodiment 2

[0051] The invention discloses a fracture welding process for a flat uncoiler mandrel retaining plate. The shaft head (front end) of the mandrel 1 is cylindrical, the shaft body (rear oblique end) is circular, and the joint between the shaft body and the shaft head is The baffle 2 has a fracture to be repaired, and the mandrel 1 is placed horizontally on the auxiliary device for welding the baffle of the flat uncoiler mandrel described in Example 1, and the specific steps are as follows:

[0052] Step 1. Preparation before welding;

[0053] 1.1), welding equipment: multifunctional micro-arc additive manufacturing machine and WS-400T manual argon arc welding machine;

[0054] 1.2), heating device: oxygen acetylene bottle and electric heating belt;

[0055] 1.3), Auxiliary facilities: angle grinder, file, hand hammer, flat shovel, mask, insulation barrel, sample, thermometer, magnifying glass, insulation cotton;

[0056] Step 2. Welding process formulation;

[0057] 2.1), wel...

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Abstract

The invention discloses a welding auxiliary device and welding process for fractures of a mandrel baffle plate of a flat uncoiling machine. The device comprises a front end fixed support and a rear inclined end fixed support. The upper portion of the front end fixed support is in a circular arc shape. The rear inclined end fixed support comprises a body supporting steel frame, side wing supporting steel frames are fixedly arranged on the two sides of the body supporting steel frame correspondingly, and a supporting steel plate is rotationally arranged on the upper portion of the body supporting steel frame. The process for welding and repairing the fractured part of the mandrel baffle plate of the flat uncoiling machine by using the welding auxiliary device is further disclosed. The fractured part and the local chipping part of the mandrel baffle plate of the flat uncoiling machine are subjected to surfacing repair by using a multifunctional micro-arc additive manufacturing machine and welding repair by manual argon arc welding, the maintenance time is saved, the maintenance cost is reduced, the shutdown loss is reduced, and a guarantee is provided for reasonable production combination.

Description

technical field [0001] The invention belongs to the technical field of welding equipment and welding technology, and relates to a fracture welding auxiliary device and a welding technology of a flat uncoiler mandrel shaft stop plate. Background technique [0002] Most of the temper decoilers used by Maanshan Iron and Steel Cold Rolling Plant are imported from Italy, with a designed annual output of 825,000 tons / year and an annual running time of 6800 hours. The inner diameter of the coil is 610mm, the outer diameter of the steel coil is increased by 1.900mm, and the maximum coil weight is 28.35 tons. After more than ten years of operation of this type of equipment, during the operation of the unit, the spindle head bolts of the uncoiler mandrel have loosened and broken many times. Phenomenon, seriously affecting the smooth operation of the unit, such as figure 1 The schematic diagram of the mandrel is shown, the mandrel is a 30CrNiMo hollow shaft, the shaft head of the mand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/235B23K9/32B23K37/053
CPCB23K9/048B23K9/235B23K9/32B23K37/053
Inventor 范兴海杨西涂俊魁章锐张婷婷雷杰杨守兴陶俊张玉
Owner ANHUI MA STEEL EQUIP MAINTENANCE CO LTD
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