A fracture welding repair process for large-scale inclined roll shaft of a ring rolling mill

A welding repair and skew roll technology, applied in welding equipment, welding equipment, welding accessories, etc., can solve problems such as fractures, and achieve the effect of saving investment, good stability and meeting actual needs

Active Publication Date: 2022-07-05
ANHUI MA STEEL EQUIP MAINTENANCE CO LTD
View PDF11 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A fracture welding repair process for large-scale inclined roll shaft of a ring rolling mill
  • A fracture welding repair process for large-scale inclined roll shaft of a ring rolling mill
  • A fracture welding repair process for large-scale inclined roll shaft of a ring rolling mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like Figure 1 to Figure 5 As shown in the figure, the present invention is a large-scale inclined 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 roller shaft 1 can also rotate the inclined roller shaft 1 arbitrarily on the fixing bracket 2 of the structural member. The inclined roller shaft 1 is generally placed on the fixing bracket of the structural member at an angle of 45 degrees. It is used to pair and fix the broken part of the inclined roller shaft 1 and control the deformation amount during the welding process, which is suitable for the shape of the front end of the inclined roller shaft 1; Pre-heating and post-welding heat treatment.

[0042] In this embodiment, the structural member fixing bracket 2 includes a supporting frame 21 that is in the shape of a "Zhong" as a whole. The supporting frame 21 is made of 50mm steel p...

Embodiment 2

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

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a large-scale inclined roll shaft fracture welding device for a ring rolling mill. Fixing structure tooling is used for pairing and fixing the broken part of the inclined roller shaft and controlling the deformation amount during the welding process; and the heating tooling is used for heating the broken part of the inclined roller shaft. The invention also discloses a fracture welding repairing process for a large-scale inclined roll shaft of a ring rolling mill based on the welding device. Through the implementation of the present invention, a large amount of maintenance time can be shortened, the maintenance cost can be reduced, and the failure rate and downtime loss can be reduced, thereby providing a guarantee for rational production.

Description

technical field [0001] The invention belongs to the technical field of welding, 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 & Steel's various specifications of rings is that the qualified raw steel ingots are cut into required lengths by the machine tool. And piercing, and then the fixed manipulator clamps the pierced ingot and sends it to the ring mill for rolling. The ring rolling mill is mainly composed of a vertical rotating main roll, horizontally movable upper and lower inclined roll shafts and holding rolls. The vertical rotating main roll and holding roll mainly control the wall thickness and diameter of the ring piece, and the horizontally movable upper and lower inclined roll shafts control Axial height of the ring. The upper and lower inclined roll shafts are metallurgically integrated by the base 42CrMo, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap