CN105710565A - Manufacturing method for aluminum alloy welding wire - Google Patents

Abstract

The invention belongs to the technical field of preparation technologies of non-ferrous metal welding wires and particularly relates to a manufacturing method for an aluminum alloy welding wire. A hot pressing mold is used in the hot pressing process and comprises an upper mold body and a lower mold body, the upper mold body comprises an upper mold column, an upper mold column flange is arranged on the upper portion of the upper mold column and tightly pressed on an upper mold column filler block through an upper mold column gland which is fastened on an upper mold plate, and the upper surface of the upper mold column filler block abuts against the upper mold plate; the lower mold body comprises an inner lower mold sleeve which is provided with a big-end-down external conical surface, the inner lower mold sleeve is installed in an outer lower mold sleeve and matched with the outer lower mold sleeve through the external conical surface, and the outer lower mold sleeve is tightly pressed on a lower mold plate by a lower mold pressing plate; an internal conical surface is arranged at the bottom of an inner hole of the inner lower mold sleeve and abuts against an extrusion hole plate, an extrusion hole is formed in the extrusion hole plate and pressed on an extrusion hole liner plate through an extrusion hole plate gland, and the lower surface of the extrusion hole liner plate abuts against the lower mold plate. The manufacturing method for the aluminum alloy welding wire has the advantages that the aluminum alloy welding wire manufactured through the method is smooth, bright, clean and shining in surface, and the stability of the welding performance is ensured.

Description

The manufacture method of aluminium alloy welding wire

Technical field

This patent belongs to the fabricating technology field of non-ferrous metal welding wire, belongs to the b23k35/40 group of IPC, particularly relates to the manufacture method of a kind of aluminium alloy welding wire.

Background technology

Aluminum and alloy application in commercial production and social life thereof are increasingly extensive, owing to proportion is little, conduction (heat) property is good, castability and machining property excellent, aluminum important function in modern industry material is irreplaceable.In Aeronautics and Astronautics, communication, automobile, electronics, household electrical appliances, the articles for daily use etc., in order to alleviate weight, improve effect, strengthen attractive in appearance, with aluminum for copper, achieve gratifying achievements with aluminum for steel.The acquirement of these achievements is largely dependent upon the development of solder technology, especially gas shielded arc welding (main MIG and TIG) and soldering, therefore seeks the gas shielded arc welding of aluminum, the manufacturing technology of soldering aluminium welding wire has long-range meaning.

Summary of the invention

The invention provides the manufacture method of a kind of aluminium alloy welding wire for solving the technical problem of existence in known technology, and the aluminum alloy welding wire surface that this manufacture method manufactures is smooth, bright and clean and bright, it is ensured that stablizing of welding performance.

The manufacture method of a kind of aluminium alloy welding wire, in turn includes the following steps: vacuum melting, hot pressing, rough, annealing, in draw, anneal, finish draw, scraping cleaning, straightening, cutting and packaging, wherein:

(1) in Vacuum Melting, adopt vaccum sensitive stove to carry out 630 DEG C of-660 DEG C of meltings, and cast under the protection blowing argon；

(2), in described hot pressing, extruder is continuously extruded wire rod under 400-500 DEG C of hot solid solution condition；

Described hot pressing uses hot pressing die, hot pressing die includes mold and lower mold, mold includes mould post, the top of upper mould post has mould post flange on, the upper mould post gland that upper mould post flange is fastened on cope match-plate pattern is pressed on mould post pad, and the upper surface of upper mould post pad adjoins with cope match-plate pattern；

Lower mold includes counterdie inner sleeve, counterdie inner sleeve has a up-small and down-big male cone (strobilus masculinus), it is sleeved in counterdie overcoat in counterdie, counterdie inner sleeve is coordinated with counterdie overcoat by male cone (strobilus masculinus), the bottom of counterdie overcoat is additionally provided with counterdie overcoat flange, counterdie overcoat is pressed on lower bolster by lower moulded board, an inner conical surface it is provided with bottom the endoporus of counterdie inner sleeve, inner conical surface adjoins with extrusion orifice plate, extrusion orifice plate is provided with extrusion cavities, extrusion orifice plate is extruded orifice plate gland and is pressed on extrusion cavities liner plate, and the lower surface of extrusion cavities liner plate adjoins with lower bolster.

The invention has the advantage that and has the benefit effect that

Owing to the invention adopts technique scheme; by adopting machinery scraping surface treatment technology; welding wire surface can be enabled aluminum alloy to and reach the effect of " bright and clean, smooth, bright "; concurrently form Al2O3 protecting film one layer fine and close; the not easily moisture absorption; its surface hydrogen content is low, it is ensured that stablizing of welding performance.User uses front without carrying out Chemical cleaning, can be directly used for welding production, and Kaifeng is deposited standby time and allowed to extend, and shortens welding operation flow process, improves the weather-proof adaptability of welding wire, and practicality gets a promotion.

Accompanying drawing explanation

Fig. 1 is the structure of extrusion schematic diagram of the invention；

Fig. 2 is the flow chart of the invention；

In figure: 1, lower bolster；2, extrusion cavities liner plate；3, extrusion orifice plate gland；4, extrusion orifice plate；5, counterdie inner sleeve；6, counterdie overcoat；7, lower moulded board；8, cope match-plate pattern；9, upper mould post pad；10, upper mould post gland；11, upper mould post.

Detailed description of the invention

For the innovation and creation content of the invention, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:

As in figure 2 it is shown,

The manufacture method of a kind of aluminium alloy welding wire, in turn includes the following steps: vacuum melting, hot pressing, rough, annealing, in draw, anneal, finish draw, scraping cleaning, straightening, cutting and packaging, wherein:

1, adopting vaccum sensitive stove to carry out melting, smelting temperature is 630 DEG C-660 DEG C, casts under the protection blowing argon, and argon flow amount is 8～10ml/s；Vacuum melting Argon casting process ensure that the degree of purity of aluminium alloy cast ingot, makes the trace harmful elements affecting welding quality be effectively controlled；

2, with extruder continuously extruded wire rod under 500～550 DEG C of hot solid solution conditions；Thermosol continuous extruding technology can adopt 660 tons of horizontal extruders, solve aluminum-lithium alloy welding wire wire rod rough surface when originally colding pressing, cut deep, and the problem that squeezed joint intensity is low, the aluminium lithium alloy wire rod any surface finish squeezed out, pressure joint between ingot casting is firm, making when subsequent handling wire drawing not easy fracture, in drawing process, compression ratio can bring up to 20% from 12.5%, improves production efficiency；

3, rough, annealing, in draw, anneal, finish draw conventionally production technology carries out, through thick, in, after finish draw silk, then carry out scraping cleaning treatment；Scraping cleaning adopts rotary delthyrium scraper to carry out scraping cleaning when wire drawing, adopts strong acid heating to clean welding wire surface oxides to 120 DEG C, it is to avoid the problem of environmental pollution that traditional chemical cleaning is brought when former technique is wire drawing；

As shown in Figure 2, wherein, hot pressing uses a kind of hot pressing die, this hot pressing die includes mold and lower mold, mold includes mould post 11, the top of upper mould post has mould post flange on, and the upper mould post gland 10 that upper mould post flange is fastened on cope match-plate pattern 8 is pressed on mould post pad 9, and the upper surface of upper mould post pad adjoins with cope match-plate pattern；

Lower mold includes counterdie inner sleeve 5, counterdie inner sleeve has a up-small and down-big male cone (strobilus masculinus), it is sleeved in counterdie overcoat 6 in counterdie, counterdie inner sleeve is coordinated with counterdie overcoat by male cone (strobilus masculinus), the bottom of counterdie overcoat is additionally provided with counterdie overcoat flange, counterdie overcoat is pressed on lower bolster 1 by lower moulded board 7, an inner conical surface it is provided with bottom the endoporus of counterdie inner sleeve, inner conical surface adjoins with extrusion orifice plate 4, extrusion orifice plate is provided with extrusion cavities, extrusion orifice plate is extruded orifice plate gland 3 and is pressed on extrusion cavities liner plate 2, and the lower surface of extrusion cavities liner plate adjoins with lower bolster.

Although the preferred embodiment of the invention being described above in conjunction with accompanying drawing; but the invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; it is not restrictive; those of ordinary skill in the art is under the enlightenment of the invention; without departing under the invention objective and scope of the claimed protection situation, it is also possible to making a lot of form, these belong within the protection domain of the invention.

Claims (1)

1. a manufacture method for aluminium alloy welding wire, in turn includes the following steps: vacuum melting, hot pressing, rough, annealing, in draw, anneal, finish draw, scraping cleaning, straightening, cutting and packaging, wherein:

(1) in Vacuum Melting, adopt vaccum sensitive stove to carry out 630 DEG C of-660 DEG C of meltings, and cast under the protection blowing argon；

(2), in described hot pressing, extruder is continuously extruded wire rod under 400-500 DEG C of hot solid solution condition；

It is characterized in that:

Described hot pressing uses hot pressing die, hot pressing die includes mold and lower mold, mold includes mould post, the top of upper mould post has mould post flange on, the upper mould post gland that upper mould post flange is fastened on cope match-plate pattern is pressed on mould post pad, and the upper surface of upper mould post pad adjoins with cope match-plate pattern；

Lower mold includes counterdie inner sleeve, counterdie inner sleeve has a up-small and down-big male cone (strobilus masculinus), it is sleeved in counterdie overcoat in counterdie, counterdie inner sleeve is coordinated with counterdie overcoat by male cone (strobilus masculinus), the bottom of counterdie overcoat is additionally provided with counterdie overcoat flange, counterdie overcoat is pressed on lower bolster by lower moulded board, an inner conical surface it is provided with bottom the endoporus of counterdie inner sleeve, inner conical surface adjoins with extrusion orifice plate, extrusion orifice plate is provided with extrusion cavities, extrusion orifice plate is extruded orifice plate gland and is pressed on extrusion cavities liner plate, and the lower surface of extrusion cavities liner plate adjoins with lower bolster.