阅读说明：本技术 一种有效改善商用厨具表面焊缝效果的方法 (Method for effectively improving surface welding seam effect of commercial kitchen ware ) 是由 王冲 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种有效改善商用厨具表面焊缝效果的方法,包括如下步骤：P1、对两个工件进行对接定位,安装到点焊工位,通过焊枪进行点焊固定；P2、取下点焊固定的工件,圆周检查对接的平整度,不符合尺寸精度要求的工件进行修正,得到点焊工件；P3、对准到焊枪位置；P4、调节燃气喷枪位置,对应到焊接起始位置；P5、启动燃气喷枪并点火,通过喷火嘴喷火对焊接位置进行预热；P6、启动焊接机输出不锈钢焊丝,并通过焊枪对预热部位进行焊接,圆周转动连续堆焊,形成焊缝；P7、静置冷却至室温；P8、形成光洁表面；P9、对打磨的焊缝进行检测,有效提高焊缝表面效果,保证厨具焊接效率和质量,利于生产加工,方便推广使用。(The invention discloses a method for effectively improving the effect of a welding seam on the surface of a commercial kitchen ware, which comprises the following steps: p1, butting and positioning the two workpieces, installing the workpieces to a spot welding station, and performing spot welding and fixing through a welding gun; p2, taking down the workpiece fixed by spot welding, checking the flatness of the butt joint circumferentially, and correcting the workpiece which does not meet the requirement of dimensional accuracy to obtain a spot welding workpiece; p3, alignment to torch position; p4, adjusting the position of the gas spray gun to correspond to the welding starting position; p5, starting a gas spray gun and igniting, and preheating a welding position through flame spraying of a flame spraying nozzle; p6, starting a welding machine to output a stainless steel welding wire, welding the preheated part by the welding gun, and continuously surfacing by circumferential rotation to form a welding seam; p7, standing and cooling to room temperature; p8, forming a smooth surface; p9, detect the welding seam of polishing, effectively improve welding seam surface effect, guarantee kitchen utensils and appliances welding efficiency and quality, do benefit to production and processing, convenient using widely.)

1. A method for effectively improving the welding seam effect on the surface of a commercial kitchen ware is characterized in that: the method for effectively improving the welding seam effect on the surface of the commercial kitchen ware comprises the following steps:

p1, butting and positioning the two workpieces, installing the workpieces to a spot welding station, and performing spot welding and fixing through a welding gun;

p2, taking down the workpiece fixed by spot welding, checking the flatness of the butt joint circumferentially, and correcting the workpiece which does not meet the requirement of dimensional accuracy to obtain a spot welding workpiece;

p3, clamping the spot welding workpiece to a welding station of a welding machine, adjusting the position of a welding line, and aligning to the position of a welding gun;

p4, adjusting the position of the gas spray gun, corresponding to the welding starting position, and spacing 10 mm to 12 mm;

p5, starting a gas spray gun and igniting, and preheating a welding position through flame spraying of a flame spraying nozzle;

p6, starting a welding machine to output a stainless steel welding wire, welding the preheated part by the welding gun, and continuously surfacing by circumferential rotation to form a welding seam;

p7, after the circumferential welding is finished, taking down the workpiece, and standing and cooling to room temperature;

p8, performing circumferential grinding on the welding seam to form a smooth surface;

p9, detecting the polished welding line, and cleaning after the welding line is qualified, thereby completing the welding of the surface of the kitchen ware.

2. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: the P1 midpoint welding fixation comprises three points of the selected circumferential welding position, and the three points are distributed on the welding line in a centrosymmetric manner.

3. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: the step P2 of correcting the workpiece includes the following steps:

a1, carrying out correction detection on the contact ratio of the butt weld of the workpiece;

a2, if the circumference coincidence length is larger than 90% of the circumference, judging that the circumference is qualified;

a3, if the length of the circumference contact ratio is 70-90% of the circumference, then the contact ratio trimming is carried out;

and A4, if the length of the circumference contact ratio is less than 70 percent of the circumference, breaking three welding spots, and separating the workpieces for spot welding and fixing again.

4. The method of claim 3, wherein the step of applying the composition to the surface of the article of commercial cookware comprises: the method for trimming contact ratio in A2 comprises the following steps:

b1, marking the position with larger contact ratio clearance;

b2, grinding and breaking the welding spot closest to the mark position to form a free position;

b3, extruding and aligning the free position, reducing the superposition gap, spot-welding again to form a new fixed welding spot, and keeping extrusion;

b4, releasing the extrusion for 2 to 3 minutes, and checking whether the re-welding position rebounds;

and B5, finishing the finishing if the welding position does not bounce and the gap meets the requirement, and repeating the steps to perform secondary finishing if the welding position bounces.

5. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: the preheating is carried out by adopting acetylene gas spray guns in the P4 and the P5, the preheating temperature is 70-80% of the welding temperature, the preheating time is 3-5 seconds, and the preheating width is 2-2.2 times of the width of a welding seam.

6. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: the output stainless steel welding wire butt joint position in the P6 is 15 mm-20 mm away from the preheating position, and the output length rate is consistent with the preheating rate.

7. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: the tail welding position in the circumferential welding in the P7 covers the initial welding position, and the covering length is 8 mm to 10 mm.

8. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: and the periphery polishing in the P8 is to polish the welding seam position, the polishing thickness is 0.3 mm to 0.5 mm, and the welding slag is completely removed.

9. The method of claim 1 for effectively improving the weld on the surface of a commercial kitchen utensil, wherein the method comprises the following steps: and detecting the welding seam in the step P9 by adopting a welding seam detection spray, detecting a welding missing position and a sand eye position, and performing repair welding and polishing treatment.

Technical Field

The invention relates to the technical field of kitchen ware processing, in particular to a method for effectively improving the effect of a welding seam on the surface of a commercial kitchen ware.

Background

In the production and processing process of the existing kitchen ware, particularly stainless steel pots and the like, the circumferential side wall and the base plate need to be spliced, and then stainless steel welding wires are adopted for welding and positioning, so that leakage is avoided.

But when current kitchen utensils and appliances surface welding, use welder counterpoint welding after the location of direct dress card mostly, interval when like this because two parts work piece docks is inconsistent, the thickness that causes build-up welding when welder welding is different, cause the welding seam to be uneven, influence welding seam surface quality, and still can greatly reduced welding quality and efficiency, simultaneously because the work piece is in the room temperature state, direct high temperature welding burns the welding position easily, simultaneously the thermal expansion shrinkage deformation is big, it is great to cause the welding position distortion, influence the welding seam quality, be unfavorable for kitchen utensils and appliances processing, wait to improve.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a method for effectively improving the effect of a welding seam on the surface of a commercial kitchen ware.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for effectively improving the welding seam effect on the surface of a commercial kitchen ware comprises the following steps:

p1, butting and positioning the two workpieces, installing the workpieces to a spot welding station, and performing spot welding and fixing through a welding gun;

p2, taking down the workpiece fixed by spot welding, checking the flatness of the butt joint circumferentially, and correcting the workpiece which does not meet the requirement of dimensional accuracy to obtain a spot welding workpiece;

p3, clamping the spot welding workpiece to a welding station of a welding machine, adjusting the position of a welding line, and aligning to the position of a welding gun;

p4, adjusting the position of the gas spray gun, corresponding to the welding starting position, and spacing 10 mm to 12 mm;

p5, starting a gas spray gun and igniting, and preheating a welding position through flame spraying of a flame spraying nozzle;

p6, starting a welding machine to output a stainless steel welding wire, welding the preheated part by the welding gun, and continuously surfacing by circumferential rotation to form a welding seam;

p7, after the circumferential welding is finished, taking down the workpiece, and standing and cooling to room temperature;

p8, performing circumferential grinding on the welding seam to form a smooth surface;

p9, detecting the polished welding line, and cleaning after the welding line is qualified, thereby completing the welding of the surface of the kitchen ware.

Preferably, the P1 midpoint welding fixation includes selecting three points of circumferential welding positions, and the three points are distributed on the welding line in a centrosymmetric manner.

Preferably, the step P2 of correcting the workpiece includes the following steps:

a1, carrying out correction detection on the contact ratio of the butt weld of the workpiece;

a2, if the circumference coincidence length is larger than 90% of the circumference, judging that the circumference is qualified;

a3, if the length of the circumference contact ratio is 70-90% of the circumference, then the contact ratio trimming is carried out;

and A4, if the length of the circumference contact ratio is less than 70 percent of the circumference, breaking three welding spots, and separating the workpieces for spot welding and fixing again.

Preferably, the method for trimming the contact ratio in A2 comprises the following steps:

b1, marking the position with larger contact ratio clearance;

b2, grinding and breaking the welding spot closest to the mark position to form a free position;

b3, extruding and aligning the free position, reducing the superposition gap, spot-welding again to form a new fixed welding spot, and keeping extrusion;

b4, releasing the extrusion for 2 to 3 minutes, and checking whether the re-welding position rebounds;

and B5, finishing the finishing if the welding position does not bounce and the gap meets the requirement, and repeating the steps to perform secondary finishing if the welding position bounces.

Preferably, acetylene gas spray guns are adopted for preheating in the P4 and the P5, the preheating temperature is 70% -80% of the welding temperature, the preheating time is 3-5 seconds, and the preheating width is 2-2.2 times of the width of the welding seam.

Preferably, the output stainless steel welding wire butt joint position in the P6 is 15 mm to 20 mm away from the preheating position, and the output length rate is consistent with the preheating rate.

Preferably, the tail welding position in the circumferential welding in the P7 covers the initial welding position, and the covering length is 8 mm to 10 mm.

Preferably, the circumferential grinding in the P8 is to grind the welding seam position, the grinding thickness is 0.3 mm to 0.5 mm, and the welding slag is completely removed.

Preferably, a welding seam detection spray is adopted for detecting the welding seam in the step P9, the welding missing position and the sand hole position are detected, and the repair welding and polishing treatment is carried out.

According to the method for effectively improving the welding seam effect on the surface of the commercial kitchen ware, the workpieces are butted in advance and then fixed by spot welding, so that the tightness of the welding seam combination of the workpieces can be effectively improved, overlarge or uneven gaps are avoided, subsequent welding is facilitated, the efficiency is ensured, the temperature difference during welding is reduced by preheating through the spray gun during welding, burnthrough and distortion deformation caused by rapid temperature rise are avoided, the welding seam quality is ensured, and finally, polishing and sand hole detection are carried out, leakage is avoided, the welding seam surface effect is effectively improved, the welding efficiency and quality of the kitchen ware are ensured, the method is favorable for production and processing, and is convenient to popularize and use.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A method for effectively improving the welding seam effect on the surface of a commercial kitchen ware comprises the following steps:

p1, butting and positioning the two workpieces, installing the workpieces to a spot welding station, and performing spot welding and fixing through a welding gun;

p2, taking down the workpiece fixed by spot welding, checking the flatness of the butt joint circumferentially, and correcting the workpiece which does not meet the requirement of dimensional accuracy to obtain a spot welding workpiece;

p3, clamping the spot welding workpiece to a welding station of a welding machine, adjusting the position of a welding line, and aligning to the position of a welding gun;

p4, adjusting the position of the gas spray gun, corresponding to the welding starting position, and spacing 10 mm to 12 mm;

p5, starting a gas spray gun and igniting, and preheating a welding position through flame spraying of a flame spraying nozzle;

p6, starting a welding machine to output a stainless steel welding wire, welding the preheated part by the welding gun, and continuously surfacing by circumferential rotation to form a welding seam;

p7, after the circumferential welding is finished, taking down the workpiece, and standing and cooling to room temperature;

p8, performing circumferential grinding on the welding seam to form a smooth surface;

p9, detecting the polished welding line, and cleaning after the welding line is qualified, thereby completing the welding of the surface of the kitchen ware.

Preferably, the P1 midpoint welding fixation includes selecting three points of circumferential welding positions, and the three points are distributed on the welding line in a centrosymmetric manner.

Preferably, the step P2 of correcting the workpiece includes the following steps:

a1, carrying out correction detection on the contact ratio of the butt weld of the workpiece;

a2, if the circumference coincidence length is larger than 90% of the circumference, judging that the circumference is qualified;

a3, if the length of the circumference contact ratio is 70-90% of the circumference, then the contact ratio trimming is carried out;

and A4, if the length of the circumference contact ratio is less than 70 percent of the circumference, breaking three welding spots, and separating the workpieces for spot welding and fixing again.

Preferably, the method for trimming the contact ratio in A2 comprises the following steps:

b1, marking the position with larger contact ratio clearance;

b2, grinding and breaking the welding spot closest to the mark position to form a free position;

b3, extruding and aligning the free position, reducing the superposition gap, spot-welding again to form a new fixed welding spot, and keeping extrusion;

b4, releasing the extrusion for 2 to 3 minutes, and checking whether the re-welding position rebounds;

and B5, finishing the finishing if the welding position does not bounce and the gap meets the requirement, and repeating the steps to perform secondary finishing if the welding position bounces.

Preferably, acetylene gas spray guns are adopted for preheating in the P4 and the P5, the preheating temperature is 70% -80% of the welding temperature, the preheating time is 3-5 seconds, and the preheating width is 2-2.2 times of the width of the welding seam.

Preferably, the output stainless steel welding wire butt joint position in the P6 is 15 mm to 20 mm away from the preheating position, and the output length rate is consistent with the preheating rate.

Preferably, the tail welding position in the circumferential welding in the P7 covers the initial welding position, and the covering length is 8 mm to 10 mm.

Preferably, the circumferential grinding in the P8 is to grind the welding seam position, the grinding thickness is 0.3 mm to 0.5 mm, and the welding slag is completely removed.

Preferably, a welding seam detection spray is adopted for detecting the welding seam in the step P9, the welding missing position and the sand hole position are detected, and the repair welding and polishing treatment is carried out.

According to the method for effectively improving the welding seam effect on the surface of the commercial kitchen ware, the workpieces are butted in advance and then fixed by spot welding, so that the tightness of the welding seam combination of the workpieces can be effectively improved, overlarge or uneven gaps are avoided, subsequent welding is facilitated, the efficiency is ensured, the temperature difference during welding is reduced by preheating through the spray gun during welding, burnthrough and distortion deformation caused by rapid temperature rise are avoided, the welding seam quality is ensured, and finally, polishing and sand hole detection are carried out, leakage is avoided, the welding seam surface effect is effectively improved, the welding efficiency and quality of the kitchen ware are ensured, the method is favorable for production and processing, and is convenient to popularize and use.