Method and device for preparing composite plate blank through friction welding

A composite slab, friction welding technology, applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve problems such as reducing production efficiency, and achieve the effects of low production cost, short friction heating time, and high interface bonding strength.

Active Publication Date: 2018-02-09
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with die casting, electroslag melting ingot and continuous casting thick slabs, these methods can prepare thick slabs by vacuum welding ordinary continuous casting slabs. The internal quality of slabs is good and the cost of making slabs is low, but the common disadvantages are Vacuum welding is required to make blanks, which reduces production efficiency. At the same time, the produced slabs must be rolled before they can be combined together.

Method used

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  • Method and device for preparing composite plate blank through friction welding
  • Method and device for preparing composite plate blank through friction welding

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Utilize method and device of the present invention to be that two pieces of materials are Q345 steel, thickness is 300mm, width is 1250mm, and length is 1800mm continuous casting slab friction welding together to make the composite slab that thickness is 600mm, concrete implementation process is as follows:

[0049]First, use the conventional pickling method to remove the iron oxide scales on the composite surfaces of the two continuous casting slabs, clean them and dry them for later use; hang the two continuous casting slabs on the roller table 27 in front of the machine in turn, and place the metal blanks Stack them up and down together, and clean the surfaces to be compounded to fit each other. The upper continuous casting slab is the upper metal blank 16, and the lower continuous casting slab is the lower metal blank 17. Start the propeller 26 to move the stack. The put metal blank is pushed into the bottom trough 4; the pusher 26 is moved back, the main hydraulic c...

Embodiment 2

[0051] Using the method and device of the present invention, two pieces of 170mm in thickness and 2 pieces of 200mm in thickness, 1250mm in width, 1800mm in length, and FH690 steel continuous casting slabs are friction welded together to make FH690 with a thickness of 740mm Steel composite slab, the specific implementation process is as follows:

[0052] First, use the conventional pickling method to remove the oxide scale on both sides of a 170mm continuous casting slab and a 200mm continuous casting slab, then remove the oxide scale on one side of a 170mm continuous casting slab and a 200mm continuous casting slab, and clean it Drying afterwards; hang one of the 200mm continuous casting slabs with scale removal on both sides on the roller table 27 in front of the machine, and then hang another 200mm continuous casting slab with scale removal on one side, with the cleaning side facing down , two continuous casting slabs are stacked up and down together, and the cleaned surfac...

Embodiment 3

[0054] Using the method and device of the present invention, a piece of austenitic stainless steel rolling plate with a thickness of 20mm and a material of 316L and a piece of alloy steel continuous casting slab with a thickness of 200mm and a material of Q345 are friction welded together to form a 220mm thick 316L stainless steel / Q345 alloy steel composite slab, the slab width is 1240mm, the length is 1500mm, the specific implementation process is as follows:

[0055]Firstly, the conventional mechanical grinding method is used to remove the oxide scale on the surface of the stainless steel plate and the continuous casting slab to be compounded, and it is used after cleaning and drying; the 316L stainless steel plate with a thickness of 20mm is first hung on the roller table 27 in front of the machine, and the surface is polished Facing upward, hang the Q345 alloy steel continuous casting slab with a thickness of 200mm on the top of the 316L stainless steel plate, with the poli...

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Abstract

The invention provides a method and device for preparing a composite plate blank through friction welding. The method comprises the steps of feeding, fixing of a metal blank, friction welding, discharging and repeated friction welding of the composite plate blank. The device comprises a rack, a supporting roller bed, a bottom chute, a top chute, a guide groove, main hydraulic cylinders, a frictiondriving device, a propeller and an ejector. The supporting roller bed is arranged at the bottom of the rack. The bottom chute is arranged above the supporting roller bed. The upper end of the rack isprovided with the guide groove. The top chute is driven by the main hydraulic cylinders to do up-down reciprocating motion in the guide groove. The bottom chute is connected with the friction drivingdevice. One side of the rack is provided with a front roller bed and the propeller. The other side of the rack is provided with the ejector. By means of the method and device, two or more continuouscasting plate blanks made of the same materials can be connected together through friction welding, and two or more metal plate blanks made of different materials with different thicknesses can also be connected together through friction welding; thus, various tonnages of large-scale composite plate blanks with internal compact structures and interfaces being in a metallurgical bonding state completely can be obtained directly.

Description

technical field [0001] The invention relates to the technical field of production methods of metal composite slabs, in particular to a method and device for preparing composite slabs by friction welding. Background technique [0002] At present, with the development of nuclear power, bridge engineering, high-rise buildings and marine engineering, engineering equipment is becoming larger and larger, the internal quality requirements of steel materials are becoming stricter, and the size of steel materials required is becoming larger and larger. The production of large forgings, thick plates and extra thick plates mainly uses die casting or electroslag melting casting of large ingots or extra thick continuous casting slabs as raw materials. The production efficiency of die casting or electroslag melting casting large ingot is too low, the cost is high, and the internal quality is difficult to guarantee, especially the internal porosity, shrinkage cavity and segregation are ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/1205B23K20/1245B23K20/26
Inventor 井玉安于涛于伟达张亚樵
Owner UNIV OF SCI & TECH LIAONING
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