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A kind of spray welding method of metal plate
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A metal plate and welding method technology, applied in the field of spray welding of metal plates, can solve the problems of poor heat resistance and low strength of brazed joints, etc.
Active Publication Date: 2015-09-23
BAOSHAN IRON & STEEL CO LTD
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However, the strength of brazed joints is generally low and the heat resistance is poor.
Method used
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Embodiment 1
[0055] The spray-welded sheet is low-carbon steel, and its composition is (% content): C (0.04), Si (0.32), Mn (0.8), P (0.01), S (0.01), of which the sheet is 1 length × width × height =2000mm×300mm×20mm, plate 2 length×width×height=2000mm×300mm×20mm.
[0056] (1) Process the edge of the welded plate and cut it into a triangle weld;
[0057] (2) The plate to be welded is installed under the spray forming device through the lower receiving roller, and the forward and reverse rotation of the lower receiving roller can be controlled by the control device.
[0058] (3) Adjust the center line of the atomization cone of the spray forming device and the center line of the plate weld to be on the same plane, and make the plate weld be horizontal and 90° to the center line of the atomization cone of the spray forming device;
[0059] (4) Put the base metal into the smeltingcrucible to prepare the molten steel with the same composition as the plate to be welded, and keep the superhea...
Embodiment 2
[0066] The spray welded plate is medium carbon steel, and its composition is (% content): C (0.4), Si (0.8), Mn (1.2), P (0.01), S (0.01), in which the plate 1 length × width × height =3000mm×400mm×30mm, plate 2 length×width×height=3000mm×400mm×30mm.
[0067] (1) Process the edge of the welded plate and cut it into a trapezoidal weld;
[0068] (2) The plate to be welded is installed under the spray forming device through the lower receiving roller, and the forward and reverse rotation of the lower receiving roller can be controlled by the control device.
[0069] (3) Adjust the center line of the atomization cone of the spray forming device and the center line of the plate weld to be on the same plane, and make the plate weld be 35° to the horizontal plane and 65° to the center line of the atomization cone of the spray forming device;
[0077] The spray-welded sheet is high-alloy steel, and its composition is (% content): C (1.2), Si (0.4), Mn (1.8), P (0.01), S (0.01), V (1.5), of which the sheet is 1 long ×width×height=2500mm×350mm×25mm, plate 2 length×width×height=2500mm×350mm×25mm.
[0078] (1) Process the edge of the welded plate and cut it into a circular weld;
[0079] (2) The plate to be welded is installed under the spray forming device through the lower receiving roller, and the forward and reverse rotation of the lower receiving roller can be controlled by the control device.
[0080] (3) Adjust the center line of the atomization cone of the spray forming device and the center line of the plate weld to be on the same plane, and make the plate weld be 45° to the horizontal plane, and 45° to the center line of the atomization cone of the spray forming device;
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Abstract
A spray welding method for metal plates comprises the flowing steps, wherein a first step is that before welding, welding joints of two metal plates to be welded are treated first, and the welding joints are preheated at 50-200 DEG C till the temperature of the welding joints is below the liquidus temperature; a second step is that metal liquid which is made of the same materials as the metal plates to be welded is prepared in a melting pot, when the degree of superheat of the metal liquid reaches 20-150 DEG C, an atomizing nozzle of a flow guiding tube is connected with the bottom of the melting pot, a stopper rod system at the upper end of the flow guiding tube is lifted for pouring at the welding joints of the metal plates to be welded, the metal liquid forms metal particle atomized cones through atomization by the atomizing nozzle, metal particles are bonded at the welding joints rapidly and remelt with metal at the welding joints at the edges of the metal plates, and the metal particles solidify quickly so that the separate metal plates to be melted can be connected together; a third step is that a subsequent roll is used for rolling of the welding joints in a thermal state so that the metal density inside the welding joints can be improved, and eventually the welding joints reach the same performance level as the metal plates; and a fourth step is that the welding joints are cleaned up and leveled. The spray welding method for the metal plates enables the performance of the welding joints to be consistent with the performance of the metal plates.
Description
technical field [0001] The invention relates to welding technology, in particular to a spray welding method for metal plates. Background technique [0002] At present, there are many welding methods for metal sheets, and the common methods are introduced as follows: [0003] (1) Manual arc welding [0004] Manual arc welding is the earliest and most widely used welding method among various arc welding methods. In 1888, Russia invented the manual arc welding technology, using bare metal rods without coating to generate shielding gas. It was not until the beginning of the 20th century that the Kjellberg process (Kjellberg process) and the Quasi-arc method were introduced into the UK, and the covered electrodes began to develop. It is worth noting that due to the high cost, people did not use covered electrodes very much at first. It uses an electrode coated with paint as the electrode and filler metal, and the arc is burned between the end of the electrode and the surface ...
Claims
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Application Information
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