CN-116673646-B - Stainless steel water-cooling flow passage plate and welding method thereof

CN116673646BCN 116673646 BCN116673646 BCN 116673646BCN-116673646-B

Abstract

The application discloses a stainless steel water-cooling flow channel plate and a welding method thereof, wherein the stainless steel water-cooling flow channel plate comprises a substrate, a panel and a conduit assembly, the outer edge of the substrate is square, the upper surface of the substrate is provided with a first concave downwards, the bottom surface of the first concave is provided with a second concave downwards, the bottom surface of the second concave is provided with a plurality of mutually parallel bulges upwards, the panel is matched with the shape of the first concave, the conduit assembly comprises a first pipe, a second pipe and a welding nozzle, the panel and the edge of the first concave are welded by laser welding, the welding deformation is small while the high requirement of the welding strength is met, the panel and the bulges are welded by vacuum brazing, the flatness completely meets the design requirement after being corrected by a hydraulic press, the internal welding seam has good forming quality and firm connection, the welding deformation is well controlled, meanwhile, the requirements of the welding strength are met, and the technical problems of large welding deformation and great difficulty in runner correction after the welding of the current flow channel plate are effectively solved.

Inventors

LIU LIJUN
CHEN LONG
WANG WEIXIN
LIU JUFENG
LI CHUNGUANG
ZHANG JIANHUA
ZHU TINGTING
HUANG XIAONIAN
XIAO LI
TANG ZHONGMIN

Assignees

湖北三江航天红阳机电有限公司

Dates

Publication Date: 20260512
Application Date: 20230612

Claims (9)

1. A stainless steel cold runner plate, comprising: The substrate is square in outer edge, the upper surface of the substrate is provided with a first concave downwards, the bottom surface of the first concave is provided with a second concave downwards, and the bottom surface of the second concave is provided with a plurality of mutually parallel bulges upwards; A panel matched with the shape of the first recess, wherein the panel is welded with the edge of the first recess through laser welding, and the panel is welded with the protrusion through vacuum brazing; the guide pipe assembly comprises a first pipe, a second pipe and a welding pipe nozzle, wherein the first pipe is welded with the lower surface of the base plate through manual argon arc welding, and the second pipe is connected with the first pipe and the welding pipe nozzle respectively; The first recess is formed by downwardly recessing the substrate along the outer edge to a center offset by a first predetermined distance.
2. The stainless steel cold runner plate of claim 1, wherein the second recess is formed by downwardly recessing a bottom surface of the first recess a second predetermined distance offset from the center along the edge.
3. The stainless steel cold runner plate according to claim 1, wherein the first pipe is a U-shaped pipe, a mounting hole is formed in the middle of the first pipe, the axis of the mounting hole is perpendicular to the plane of the axis of the U-shaped pipe, the second pipe is a straight pipe, one end of the second pipe welded with the welding pipe nozzle is a flat port, one end connected with the first pipe is a semicircular port, and the semicircular port is welded with the mounting hole, so that the second pipe is coaxial with the mounting hole.
4. The cold flow path plate of stainless steel according to claim 1, wherein the welding of the face plate and the protrusion by vacuum brazing comprises placing solder on the protrusion so that the periphery of the solder is flush with the protrusion, welding the solder and the protrusion by resistance energy storage welding, and welding the face plate and the protrusion by vacuum brazing.
5. A method of welding a stainless steel water cooled runner plate as claimed in any one of claims 1 to 4, comprising: S1, welding the panel and the protrusions through vacuum brazing; s2, welding the panel and the edge of the first recess through laser welding; and S3, welding the first pipe and the substrate by manual argon arc welding.
6. The welding method of the stainless steel water-cooling flow channel plate according to claim 5, wherein the step S1 comprises the steps of placing brazing filler metal on the protrusions, enabling the peripheries of the brazing filler metal to be level with the protrusions, welding the brazing filler metal with the protrusions through resistance energy storage welding, and welding the panel with the protrusions through vacuum brazing.
7. The method for welding the stainless steel water-cooled runner plate according to claim 6, wherein the welding of the panel and the protrusions is performed by vacuum brazing, comprises transferring the stainless steel water-cooled runner plate into a heat treatment vacuum furnace, vacuumizing and heating, taking out the stainless steel water-cooled runner plate after the treatment is completed, wherein the heat treatment comprises heating to 400 ℃ at a speed of 5 ℃ per minute and preserving heat for 15min, heating to 750 ℃ at a speed of 5 ℃ per minute and preserving heat for 20min, heating to 880 ℃ at a speed of 10 ℃ per minute and preserving heat for 10min, and cooling to room temperature after the heat preservation is completed.
8. The method of welding a water-cooled stainless steel runner plate according to claim 5, wherein step S2 comprises positioning a butt joint between the panel and the edge of the first recess by laser spot welding, and performing full gap welding by laser continuous welding.
9. The welding method of a stainless steel water-cooled runner plate according to claim 5, wherein step S3 includes: Polishing and removing weld residues on the periphery of the substrate; correcting the flatness of the substrate; Disposing two conduit assemblies face-to-face on the lower surface of the base plate, the welded nozzle being parallel to the centerline of the base plate; positioning the first tube and the substrate through manual argon arc welding spot welding; and carrying out full-gap welding on the first pipe and the substrate through manual argon arc welding continuous welding.

Description

Stainless steel water-cooling flow passage plate and welding method thereof Technical Field The application belongs to the technical field of stainless steel welding, and particularly relates to a stainless steel water-cooling flow passage plate and a welding method thereof. Background In the stainless steel welding process, the problems of welding deformation, high-temperature oxidation, stress concentration, corrosion resistance reduction and the like are caused due to the large linear expansion coefficient and low thermal conductivity. The stainless steel cold runner plate can not meet the welding requirement of the runner plate by adopting laser welding because of complex internal structure, integral machining and conventional arc welding, but has the advantages of smaller runner spacing of only 5mm, more number, larger welding deformation after all runners are welded, difficult estimation of welding deformation trend, and large correction difficulty after the welding of the runner plate because of the characteristic of large rebound of stainless steel. Disclosure of Invention The application provides a stainless steel water-cooling flow channel plate and a welding method thereof, which aim to solve the technical problems of large welding deformation and large flow channel correction difficulty of the current flow channel plate after welding. In a first aspect of the application, there is provided a stainless steel cold runner plate comprising: The substrate is square in outer edge, the upper surface of the substrate is provided with a first concave downwards, the bottom surface of the first concave is provided with a second concave downwards, and the bottom surface of the second concave is provided with a plurality of mutually parallel bulges upwards; A panel matched with the shape of the first recess, wherein the panel is welded with the edge of the first recess through laser welding, and the panel is welded with the protrusion through vacuum brazing; The guide pipe assembly comprises a first pipe, a second pipe and a welding pipe nozzle, wherein the first pipe is welded with the lower surface of the base plate through manual argon arc welding, and the second pipe is connected with the first pipe and the welding pipe nozzle respectively. In some embodiments, the first recess is formed by downwardly recessing the substrate along the outer edge to a center offset a first predetermined distance. In some embodiments, the second recess is formed by downwardly recessing a bottom surface of the first recess along an edge to a center offset by a second predetermined distance. In some embodiments, the first tube is a U-shaped tube, a mounting hole is formed in the middle of the first tube, the axis of the mounting hole is perpendicular to the plane where the axis of the U-shaped tube is located, the second tube is a straight tube, one end of the second tube welded with the welding tube nozzle is a flat opening, one end connected with the first tube is a semicircular opening, and the semicircular opening is welded with the mounting hole, so that the second tube is coaxial with the mounting hole. In some embodiments, the panel and the bump are welded by vacuum brazing including placing solder on the bump such that the solder is flush with the bump, welding the solder to the bump by resistance energy storage welding, and welding the panel to the bump by vacuum brazing. In a second aspect of the present application, there is provided a method for welding the stainless steel water-cooled runner plate, comprising: S1, welding the panel and the protrusions through vacuum brazing; s2, welding the panel and the edge of the first recess through laser welding; and S3, welding the first pipe and the substrate by manual argon arc welding. In some embodiments, step S1 includes placing solder on the protrusions such that the solder is flush with the protrusions at the periphery, welding the solder to the protrusions by resistance energy storage welding, and welding the panel to the protrusions by vacuum brazing. In some embodiments, the panel and the bulge are welded by adopting vacuum brazing, and the method comprises the steps of transferring a stainless steel water-cooling runner plate into a heat treatment vacuum furnace, vacuumizing and heating, taking out the stainless steel water-cooling runner plate after the treatment is finished, heating to 400 ℃ at a speed of 5 ℃ per minute, preserving heat for 15min, heating to 750 ℃ at a speed of 5 ℃ per minute, preserving heat for 20min, heating to 880 ℃ at a speed of 10 ℃ per minute, preserving heat for 10min, and cooling to room temperature after the heat preservation is finished. In some embodiments, step S2 includes locating a butt joint between the panel and the edge of the first recess by laser spot welding and then performing full gap welding by laser welding continuous welding. In some embodiments, step S3 comprises: Polishing and removing weld residues on the periphery