A composite blank making equipment for titanium steel composite plate by vacuuming and then submerged arc welding

Abstract

The invention relates to the technical field of mechanical manufacturing equipment, in particular to a titanium steel composite plate vacuuming and then submerged arc welding composite blank making equipment, comprising two carbon steel plates, a plurality of steel bars are welded between the two carbon steel plates, a seal is formed between the plurality of steel bars and the two carbon steel plates, a first through hole is arranged on one of the carbon steel plates, a rivet is welded on one of the carbon steel plates, the rivet is welded to one end of a connecting pipe, and the other end of the connecting pipe is fixedly connected to a vacuum pump; before assembling the blanks, a carbon steel plate is selected to open a first through hole on it, and when assembling the blanks, a sealing weld is performed by gas shielded welding, and then the rivet and the connecting pipe are welded, and then the composite blank can be vacuumed, and the composite blank after vacuuming is subjected to submerged arc welding, so that the upper and lower carbon steel plates are not affected by the welding heat of submerged arc welding and oxidized, thereby improving the yield rate, improving the composite strength and bonding rate, and preventing the waste of precious metals after cutting due to non-bonding.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing equipment, in particular to a titanium-steel composite plate vacuuming and then submerged arc welding composite blank making equipment. Background Art

[0002] The manufacturing of titanium steel composite plate composite steel billet is composed of two upper and lower carbon steel plates, with two titanium plates placed in the middle. The titanium plates are isolated by vertical steel bars around the carbon steel. When making the billet, it is necessary to perform sealing welding and submerged arc welding on the vertical steel bars around the upper and lower steel plates of the composite billet.

[0003] However, submerged arc welding has a large heat input and causes serious oxidation of carbon steel plates. The oxidized carbon steel plates hinder the bonding of titanium plates during rolling, and are particularly prone to delamination defects at the edges of titanium-steel composite plates. The yield rate is very low, resulting in a large amount of waste of precious metals. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a composite blank making device for titanium-steel composite plates by vacuuming and then submerged arc welding.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a titanium-steel composite plate vacuum and submerged arc welding composite blank making equipment, including two carbon steel plates, a plurality of steel bars are welded between the two carbon steel plates, two adjacent steel bars are in conflict with each other and are fixed by welding, and a seal is formed between the plurality of steel bars and the two carbon steel plates, one of the carbon steel plates is provided with a first through hole, one of the carbon steel plates is welded with a rivet, the rivet is provided with a second through hole, a connecting pipe is welded on the rivet, one end of the connecting pipe is fixedly connected to the rivet, and the other end of the connecting pipe is fixedly connected to a vacuum pump.

[0006] Specifically, before assembling the titanium steel composite billet, one of the carbon steel plates is selected to open the first through hole. During the assembly, the rivet and the connecting pipe are first welded by gas shielded welding, and then the composite billet can be welded by submerged arc welding.

[0007] Specifically, the first through hole selected before the assembly is specially designed so as not to affect the sealing welding of the upper and lower carbon steel plates and steel bars of the composite billet after the assembly.

[0008] Specifically, the cross section of the first through hole is L-shaped, and the cross section of the second through hole is L-shaped.

[0009] Specifically, the end of the cross section of the carbon steel plate is in a trapezoidal structure, and one end of the cross section of the second through hole is in a trumpet-shaped structure.

[0010] Specifically, one end of the rivet cross section is in a trapezoidal structure, and the middle portion of the rivet cross section is inclined.

[0011] The beneficial effects of the present invention are:

[0012] It is only necessary to select a carbon steel plate and open the first through hole in it before assembling the billets. After sealing welding with gas shielded welding, the rivets and the connecting pipes are welded first, and then the composite billet can be vacuumed. The composite billet after vacuuming is then subjected to submerged arc welding. Therefore, the upper and lower carbon steel plates will not be affected by the welding heat of submerged arc welding and thus oxidized, thereby improving the yield rate, the composite strength and the bonding rate, and preventing the waste of precious metals after removal due to unbonded parts. After submerged arc welding, it is vacuumed again to ensure that the vacuum degree of the composite billet reaches the design requirement and the composite quality during rolling is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a titanium-steel composite plate vacuum-assisted submerged arc welding composite blank making device provided by the present invention;

[0015] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0016] Figure 3 It is a schematic diagram of the connection structure between the carbon steel plate and the first through hole of the present invention;

[0017] Figure 4 It is a schematic diagram of the connection structure between the rivet and the connecting pipe of the present invention;

[0018] Figure 5 It is a schematic diagram of the connection structure between the rivet and the carbon steel plate of the present invention;

[0019] Figure 6 This is a picture of the application of the titanium steel composite plate of the present invention in the actual composite billet submerged arc welding production.

[0020] In the figure: 1. carbon steel plate; 2. first through hole; 3. rivet; 4. second through hole; 5. connecting pipe; 6. vacuum pump; 7. steel bar. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1-6As shown, a titanium steel composite plate vacuuming and then submerged arc welding composite blank making equipment described in the present invention comprises two carbon steel plates 1, a plurality of steel bars 7 are welded between the two carbon steel plates 1, two adjacent steel bars 7 are in conflict with each other and fixed by welding, a seal is formed between the plurality of steel bars 7 and the two carbon steel plates 1, one of the carbon steel plates 1 is provided with a first through hole 2, a rivet 3 is welded on one of the carbon steel plates 1, a second through hole 4 is provided on the rivet 3, a connecting pipe 5 is welded on the rivet 3, one end of the connecting pipe 5 is fixedly connected to the rivet 3, and the other end of the connecting pipe 5 is fixedly connected to the vacuum pump 6, and before assembling the titanium steel composite billet, one of the carbon steel plates 1 is selected to open the first through hole 2, and when assembling the billet, gas shielded welding is used for sealing welding, and then the rivet 3 and the connecting pipe 5 are welded, and then the submerged arc welding of the composite billet can be performed, and the selection of a carbon steel plate 1 before assembling to start the first through hole 2 is specially designed, and will not affect the sealing welding of the upper and lower carbon steel plates 1 and steel bars 7 of the composite billet after assembly.

[0023] Specifically, the cross-section of the first through hole 2 is an L-shaped structure, the cross-section of the second through hole 4 is an L-shaped structure, the end of the cross-section of the carbon steel plate 1 is a trapezoidal structure, and one end of the cross-section of the second through hole 4 is a trumpet-shaped structure, which can facilitate the welding between the carbon steel plate 1 and the steel bar 7.

[0024] Specifically, one end of the cross section of the rivet 3 is a trapezoidal structure, and the middle portion of the cross section of the rivet 3 is inclined, thereby facilitating welding between the rivet 3 and the carbon steel plate 1 .

[0025] When the present invention is used, it is only necessary to select a carbon steel plate 1 before assembling the blanks and open the first through hole 2 thereon. When assembling the blanks, the rivet 3 is first engaged with the first through hole 2 and the rivet 3 is welded to one of the carbon steel plates 1 after sealing welding with gas shielded welding. Then, the rivet 3 is welded to the connecting pipe 5 and the composite blank is evacuated by the vacuum pump 6. The composite blank after evacuation is subjected to submerged arc welding. Therefore, the upper and lower carbon steel plates 1 are not affected by the welding heat of submerged arc welding and thus oxidized. The yield rate, composite strength and bonding rate are improved, and waste after noble metal removal due to non-bonding is prevented. After the submerged arc welding is completed, the composite blank is evacuated for a second time to ensure that the vacuum degree of the composite blank reaches the design requirement value and the composite quality during rolling is guaranteed.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for using a titanium steel composite plate vacuum submerged arc welding composite blank making device, characterized in that: The invention comprises two carbon steel plates (1), a plurality of steel bars (7) are welded between the two carbon steel plates (1), two adjacent steel bars (7) are in contact with each other and fixed by welding, a seal is formed between the plurality of steel bars (7) and the two carbon steel plates (1), a first through hole (2) is provided on one of the carbon steel plates (1), a rivet (3) is welded on one of the carbon steel plates (1), a second through hole (4) is provided on the rivet (3), a connecting pipe (5) is welded on the rivet (3), one end of the connecting pipe (5) is fixedly connected to the rivet (3), and the other end of the connecting pipe (5) is fixedly connected to a vacuum pump (6); Before assembling the titanium steel composite billet, one of the carbon steel plates (1) is selected to open a first through hole (2). During the assembly, sealing welding is performed by gas shielded welding, and then welding is performed between the welding rivet (3) and the connecting pipe (5). After that, the composite billet can be evacuated by a vacuum pump (6). After the vacuum is evacuated, the composite billet is subjected to submerged arc welding. The method of selecting a carbon steel plate (1) to start the first through hole (2) before assembling the billet is specially designed so as not to affect the sealing welding of the upper and lower carbon steel plates (1) and the steel bar (7) of the composite billet after assembly. The cross section of the first through hole (2) is in an L-shaped structure, and the cross section of the second through hole (4) is in an L-shaped structure; the end of the cross section of the carbon steel plate (1) is in a trapezoidal structure, and one end of the cross section of the second through hole (4) is in a bell-mouth-shaped structure; one end of the cross section of the rivet (3) is in a trapezoidal structure, and the middle part of the cross section of the rivet (3) is arranged obliquely.

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