阅读说明：本技术 一种无镀铜气体保护焊丝的生产制造工艺 (Production and manufacturing process of copper-plating-free gas shielded welding wires ) 是由 贾军 张显辉 朱达 于 2019-09-30 设计创作，主要内容包括：本发明提供一种无镀铜气体保护焊丝的生产制造工艺,将原材料依次进行清洗、除磷、硼砂、粗拔、精拔、在线清洁、定径成膜、排绕,即得所需焊丝。本发明提供的一种无镀铜气体保护焊丝的生产制造工艺,能够不经过镀铜工序就实现焊丝的长期存放且焊丝的送丝性能和使用性能不受影响,在使用过程中减少烟尘的产生,减少污染,并提高了焊丝的防锈、导电和送丝性能,使用过程中烟尘小,减少对人体的危害。(The invention provides a production and manufacturing process of gas-shielded welding wires without copper plating, which comprises the steps of sequentially cleaning raw materials, removing phosphorus, borax, rough drawing, fine drawing, online cleaning, sizing, forming a film and winding to obtain the required welding wires.)

1, production process of gas shielded welding wire without copper plating, which comprises cleaning raw materials, removing phosphorus, borax, rough drawing, fine drawing, cleaning on line, sizing, forming film, and winding to obtain the required welding wire.

2. The process for manufacturing welding wire electrodes with no copper plating gas as claimed in claim 1, wherein said cleaning step comprises pickling, water washing, and neutralization washing.

3. The manufacturing process of copper-plating-free gas shielded welding wires according to claim 2, wherein the pickled raw materials are washed with water in a washing tank, the soaking time of the washing is more than or equal to 1 minute, and the washing is carried out up and down for more than or equal to 3 times in a reciprocating manner.

4. The kinds of gas shielded welding wire without copper plating according to claim 2, wherein the raw material after washing is neutralized and washed in a neutralization tank, the soaking time of the neutralization and washing is more than or equal to 30 seconds, the raw material is moved up and down more than or equal to 3 times in a reciprocating manner, and the pH value in the neutralization tank is more than or equal to 12.

5. The manufacturing process of kinds of gas-shielded welding wires without copper plating according to claim 1, wherein the borax has a temperature not lower than 90 ℃, a pH value of 8-10 and a concentration of 250-350 g/L.

6. The process for producing copper-free gas shielded welding wire according to claim 1, wherein the rough drawing is performed by starting drum cooling water, mold cooling water and drum air cooling, and the drum temperature is less than or equal to 120 ℃.

7. The manufacturing process of kinds of gas shielded welding wires without copper plating according to claim 1, wherein the die ratio of the rough drawing is 4.75-4.08-3.60-3.15-2.75-2.45, and the drawing speed of the rough drawing is 6-8 m/s.

8. The manufacturing process of kinds of gas shielded welding wires without copper plating according to claim 1, wherein the fine drawing is performed by opening a die for water cooling, the temperature of the winding drum is less than or equal to 100 ℃, and the temperature of the die box is less than or equal to 60 ℃.

9. The manufacturing process of kinds of gas-shielded welding wires without copper plating according to claim 1, wherein the die ratio of the fine drawing is 2.25-2.05-1.85-1.65-1.45-1.22, and the drawing speed of the fine drawing is 10-12 m/s.

10. Use of the manufacturing process of copper-free gas shielded welding wire of any of claims 1-9 for preparing copper-free gas shielded welding wire.

Technical Field

The invention belongs to the technical field of welding materials, and relates to a production and manufacturing process of copper-plating-free gas shielded welding wires.

Background

The currently adopted method for treating the surface of the gas shielded welding wire is to plate copper layers on the surface of the welding wire for isolation, but the method has the following defects that the copper layers can influence the surface quality of a welding seam in , secondly, chemical reagents such as acid, alkali and the like are required to be added, the cost is increased, thirdly, industrial waste water is generated, and a large amount of environment-friendly investment is required in factories.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a production and manufacturing process of copper-plating-free gas shielded welding wires, which can realize long-term storage of the welding wires without an electrochemical copper plating link, does not influence the wire feeding performance and the service performance of the welding wires, reduces the generation of smoke dust in the using process and relieves the environmental protection pressure.

In order to achieve the above and other related objects, the aspect of the invention provides a manufacturing process of gas shielded welding wires without copper plating, which comprises the steps of sequentially cleaning raw materials, removing phosphorus, borax, rough drawing, fine drawing, online cleaning, sizing to form a film, and winding to obtain the required welding wires.

Preferably, the cleaning process comprises acid washing, water washing and neutralization washing in sequence.

More preferably, the acid wash is a hydrochloric acid wash procedure as is conventionally used in the art.

preferably, the hydrochloric acid used in the acid washing has a concentration of 5-18% (v/v), and the pickling tank of the acid washing contains Fe²⁺≤200g/L。

layers of phosphorus scale are adhered to the surface of a wire rod raw material serving as a welding material, so that rust stains appear on the surface of the wire rod raw material after long-time placement, and the wire rod raw material is not beneficial to drawing and production.

More preferably, the pickled raw materials are washed by water in a washing tank, the soaking time of the washing is more than or equal to 1 minute, and the washing is carried out for more than or equal to 3 times in a reciprocating way. The water washing is used for removing acid liquor on the surface of the raw material.

More preferably, the raw materials after being washed by water are neutralized and washed in a neutralization tank, the soaking time of the neutralization and washing is more than or equal to 30 seconds, and the raw materials are vertically reciprocated for more than or equal to 3 times. The neutralization washing is used to ensure the neutralization effect.

Further , the pH value of the neutralization tank is preferably equal to or greater than 12.

Preferably, the phosphorus removal is a phosphorus removal procedure as is conventionally used in the art.

Preferably, the borax conditions are as follows: the temperature of borax is more than or equal to 90 ℃; the pH value of borax is 8-10, and the concentration is 250-350 g/L.

Preferably, the borax liquid used by the borax is discharged or subjected to heat preservation control during shutdown.

More preferably, the temperature of the heat preservation control is more than or equal to 65 ℃.

Preferably, the drum cooling water, the mold cooling water and the drum air cooling are started for rough drawing, and the drum temperature is less than or equal to 120 ℃. The steel wire is ensured not to be accumulated in a dispersed state on the winding drum.

Preferably, the surface of the rough-drawn steel wire must be smooth and round, and the size is within the tolerance range. Avoid galling, out of round and the like.

Preferably, the ratio of the rough drawing die is 4.75-4.08-3.60-3.15-2.75-2.45.

Preferably, the drawing speed of the rough drawing is 6-8 m/s. More preferably, the drawing speed of the rough drawing is 7 m/s.

Preferably, the fine drawing needs to open a die for water cooling, the temperature of a winding drum is less than or equal to 100 ℃, and the temperature of a die box is less than or equal to 60 ℃.

Preferably, the proportion of the finely-drawn die is 2.25-2.05-1.85-1.65-1.45-1.22.

Preferably, the drawing speed of the fine drawing is 10-12 m/s.

Preferably, the fine-drawing is performed in an in-line cleaning device. The carrying amount of the wire drawing powder on the surface of the fine drawing semi-finished product can be controlled, and the welding wire can be contacted with the spiral scraping device rotating at a low speed when passing through the online cleaning device, so that the carrying amount of the wire drawing powder on the surface of the welding wire is reduced. And further, when the copper-free surface is subjected to film forming, the effects of uniform coating and firm coating can be achieved.

Preferably, the online cleaning is performed in an online cleaning device. On-line cleaning utilizes spiral brush wiping to make behind on-line cleaning device welding wire surface lubricating powder fluffy, and the welding wire is clean with surface lubricating powder through the washing afterwards, ensures that the welding wire surface does not remain, guarantees that the welding wire surface does not have the dirty stain that is unfavorable for surface filming such as remaining lubricating powder behind on-line cleaning device.

After the welding wire is subjected to fine drawing, the lubricating powder coated on the surface of the welding wire needs to be cleaned on line, the welding wire passes through the spiral steel wire brush, the lubricating powder carried on the surface of the welding wire is scraped by , the welding wire can be separated from the welding wire, the carrying amount of the lubricating powder on the surface of the welding wire is reduced, the cleaning pressure of the lubricating powder is reduced, and the use of chemicals is reduced.

The online cleaning device is disclosed in online cleaning devices in the patent number ZL201720807449.8 in the drawing process.

The coating material of the welding wire is uniformly coated on the surface of the welding wire after passing through a final -pass sizing die, and then is firmly adhered to the surface of the welding wire after passing through the die, so that the wire feeding, rust prevention and manufacturability of the welding wire are all promoted.

The film forming agent is a copper-free film forming agent conventionally used in the art.

Preferably, the winding is a winding process conventionally used in the art.

The second aspect of the invention provides the use of the above production process for preparing a copper-free gas shielded welding wire.

As described above, the production and manufacturing process of kinds of gas shielded welding wires without copper plating provided by the invention reduces links of electrochemical copper plating, can realize long-term storage of the welding wires without a copper plating process, does not influence the wire feeding performance and the service performance of the welding wires, reduces the generation of smoke dust in the using process, reduces pollution and relieves the environmental protection pressure.

(1) The production process of gas-shielded welding wires without copper plating provided by the invention omits the electroplating link with the greatest harm to environmental protection, and can achieve the purpose of long-time storage by means of a surface film forming technology.

(2) The production and manufacturing processes of the gas shielded welding wire without copper plating provided by the invention scrape the surface wire drawing powder of the fine drawing semi-finished product, reduce the carrying amount of the lubricating powder on the surface of the welding wire, and the invention circularly scrape the welding wire, thereby ensuring that the welding wires at different positions can obtain uniform coatings.

(3) The kinds of gas shielded welding wires without copper plating provided by the invention adopt a novel surface film forming technology, can uniformly coat the film forming material with specific components on the surface of the welding wire, so that the welding wire is not rusted for a long time, the electric conductivity is good, adverse factors influencing welding such as arc breaking and arc extinguishing can not occur during welding, the surface of the welding wire is smooth, the abrasion to a contact tip is reduced, and the service life of the contact tip is prolonged.

(4) According to the production and manufacturing process of copper-plating-free gas shielded welding wires, lubricating powder can fall into the cleaning device box body through continuous rotation of the degreasing cleaning groove, so that less lubricating powder carried by the welding wires is guaranteed when the copper-plating-free welding wires are subjected to a degreasing film-forming process, and a cleaner semi-finished product can be obtained by slight treatment.

(5) The production process of kinds of gas shielded welding wires without copper plating provided by the invention ensures that the scraped lubricating powder falls into the online cleaning box completely, and the lubricating powder does not generate dust and can not diffuse into the air, thereby being more beneficial to environmental protection.

(6) The production process of kinds of gas shielded welding wires without copper plating provided by the invention combines the process control process and the special coating at the end, and strictly controls the quality of on-line cleaning after fine drawing in the production process.

Detailed Description

The invention is further illustrated at in conjunction with specific examples, which are intended to be illustrative only and not limiting to the scope of the invention.

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be understood that the processing equipment or devices not specifically mentioned in the following examples are conventional in the art; all pressure values and ranges refer to relative pressures.

It should be further understood that reference to or more method steps in this disclosure does not exclude that other method steps may be present before or after the combination step or that other method steps may be intervening between these explicitly mentioned steps, unless otherwise indicated, and that reference to a combination connection between or more apparatus/devices in this disclosure does not exclude that other apparatus/devices may be present before or after the combination apparatus/device or that other apparatus/devices may be intervening between these explicitly mentioned apparatus/devices, unless otherwise indicated.