CN101376187A

CN101376187A - Method for increasing solder fluidity in furnace welding

Info

Publication number: CN101376187A
Application number: CNA2007101317127A
Authority: CN
Inventors: 王培红
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-31
Filing date: 2007-08-31
Publication date: 2009-03-04

Abstract

The invention discloses a method for improving the solder fluidity in furnace welding. The method is characterized in that a plurality of small grooves which form a certain angle with welding seams are formed on the surface of a weldment around the welding seams of the weldment by adopting the method of stamping or rolling. Since the invention adopts a novel welding technique which is mainly characterized in that after heating the coating solder of the weldment entering a welding furnace, the solder which is partially melted and flows around can flow towards the welding seams again through the small grooves, therefore, the method can improve the quality of the welding seams when welding and reduce the coating amount of the solder. The embodiment can be seen in the abstract figures, wherein: 1. a tabular weldment; 2. coating solder; 3. another hole passing through the circular tube weldment; and 4. V-shaped small grooves.

Description

A kind of method that in the stove weldering, increases solder fluidity

One, technical field

The present invention is in order to strengthen in stove weldering scolder in the process of the surface mobility of welding work pieces, and the scolder on weldment surface is fully flow to needs the weld seam of welding position, avoids in the stove weldering scolder waste and reduces the failure welding of commissure.

Two, background technology

Stove weldering at present has been a kind of at welding method relatively more commonly used in the welding of weldment disposable integral.It can guarantee that weldment the time avoids because local too being heated produces the concentrated harm that is caused of stress in welding, it is the commissure that scolder directly is coated in weldment before weldment is gone into the stove heating, by the gradually thermally equivalent of whole weldment in stove, solder fusing is flow in the weld seam, after furnace temperature reduction scolder solidifies, make between the weldment to fuse, realize the purpose of welding, because weldment is whole and scolder heats simultaneously, therefore can avoid the generation of stress.

But owing to can flow to the four sides after weldment surface scolder dissolves, only some flows to the commissure of weldment, and a part has just been wasted in addition, so just can not effectively guarantee the quality of welding to cause part failure welding and weldment to scrap.

Three, summary of the invention

1, technical problem

The present invention provides a kind of welding technique that can increase weldment surface flow of solder material controllability in the stove weldering.

2, technical scheme

The welding technique that the present invention solves its technical problem is: the surface that is about to solder-coating at weldment, by punching press or the method that rolls, surface on weldment around the weld seam forms some sulculuses, one end of sulculus leads to the weld seam between the weldment, scolder after applying is when heat fused flows like this, part scolder flows directly to weld seam, the scolder of another part trickling around the weldment surface will flow in sulculus earlier, flow to weld seam again by sulculus then, can avoid scolder arbitrarily to trickle to other direction of weldment surface.

The invention has the beneficial effects as follows and both overcome the uncontrollability that scolder flows on the weldment surface in the present stove weldering, effectively controlled the flow direction of scolder, improved welding quality, guaranteed the intensity of welding, increased the intensity of face of weld again, can suitably reduce simultaneously the waste of scolder again, reduce the coating amount of scolder, save cost.

Four, description of drawings

Fig. 1 is the vertical view that does not adopt tabular weldment of the present invention.

Fig. 2 is the vertical view that adopts tabular weldment of the present invention.

Fig. 3 is Fig. 2 embodiment application aborning.

Fig. 4 is the cutaway view to the I-I of the tabular weldment of Fig. 2.

1. tabular weldments among the figure, 2. Tu Fu scolder, the 3. hole passed of another pipe weldment, 4.V type sulculus

Five, specific embodiments

To penetrate a pipe weldment among Fig. 1 on the tabular weldment in each hole, by at tabular weldment surface weld place solder-coating, the form of sintering in stove, the inflow weld seam solidifies after making solder fusing, tabular weldment and pipe weldment are become one, require simultaneously will seal between pipe weldment and the tabular weldment, the welding slit can not be arranged.Common way is the weld seam solder-coating around the pipe weldment on tabular weldment, and efficient is lower, and the welding slit often occurs, can not guarantee seal.

At above-mentioned situation, the present invention adopts a kind of new welding technique shown in Figure 2, on tabular weldment surface, along the punching press of weld seam vertical direction or roll out some groove depth 0.2MM shown in Figure 4, the V-type sulculus of angular aperture 90 degree, adopt solder coating method shown in Figure 3, send in the stove and heat, behind solder fusing, part scolder directly enters weld seam, another part scolder at first flows to sulculus all around when flowing, flow to weld seam again, so both can improve the surface covered of scolder, reduce the solder coating amount, solved the sealing problem in welding slit again, reduced scrappage.

Claims

1, a kind of method that in the stove weldering, increases solder fluidity, it mainly is after the weldment solder-coating enters in the brazier heating, can make partial melting to the scolder that flows all around, flow to weld seam once more by sulculus, it is characterized in that: around the weld seam of weldment, by punching press or the method that rolls, form some and the angled sulculus of weld seam on the weldment surface.

2, the method that increases solder fluidity in the stove weldering according to claim 1, it is characterized in that: the sulculus on weldment surface becomes the V font.

3, the method that increases solder fluidity in the stove weldering according to claim 2 is characterized in that: the angular aperture of weldment surface V font sulculus is 90 degree, and groove depth is 0.2 millimeter.

4, the method that increases solder fluidity in the stove weldering according to claim 1, it is characterized in that: the sulculus of weldment Surface Machining becomes 90 degree with the weld seam angle.