Summary of the invention
Technical problem to be solved by this invention has provided a kind of jewellery quality after can effectively guaranteeing to weld, can make simultaneously welding back jewellery not have big solder joint again, smooth surface is mellow and full, but also can save energy, save welding powder, the pure silver ornament welding technique of enhancing productivity.
For solving the problems of the technologies described above, technical scheme of the present invention is: pure silver ornament welding technique, employing is under the working environment of 15 ℃~25 ℃ of temperature, humidity≤60%, the silver jewellery semi-finished product that will need earlier to weld are crossed borax water, the silver jewellery semi-finished product are set level and the welding position are alignd then, the flame envelope that adopts 965 ± 5 ℃ of weldering flames realize rapid welding welding, and aspect ratio of weld is controlled between 1~1.2 with the half-finished weld fusing of silver jewellery.The control of working environment in the operating room when control of working environment is meant welding, the control of its temperature and humidity also can suitably be adjusted according to practical condition, as suitable adjustment temperature is 30 ℃, 12 ℃, adjust humidity and be 65% etc., this is known general knowledge to those skilled in the art; And the silver jewellery semi-finished product can press design drawing for adopting raw material, adopt mould to pass through and make after operation such as material is opened in operation such as oil pressure, casting or employing; Borax water allows each jewellery semi-finished product immerse in the borax water and goes over as flux, is convenient to the half-finished fusion weld of jewellery.
The employing of welding flame can look the jewellery volume varies in size and the jewellery kind selects to use the flame of gasoline welding gun or hydrogen-oxygen welding gun, the flame of gasoline welding gun or hydrogen-oxygen welding gun at the uniform velocity is burned to 965 ± 5 ℃ mode, and the adjustment weld heat input remains on 190~210 joules/cm.And can adopt leftward welding or rightward welding method according to the welding custom.
When welding, weld flame and move with 0.9cm/s speed, to realize the welding position evenly the being heated raising welding quality along jewellery welding position trend.
Silver material can adopt ten thousand pure silvers, even can to adopt quality be 99.999% silver, and this ten thousand pure silvers raw material in use adopts wrapping paper to isolate to guarantee quality.Owing to operations such as getting the raw materials ready of ten thousand pure silvers require strict more than thousand pure silvers, pure silver, so necessary thoroughly polished and cleaned such as employed process equipment such as mould, the impurity that does not have any other, for guaranteeing the purity of ten thousand pure silvers, all processing machines must use a cover separately, be not subjected to the influence of other products with the quality that guarantees ten thousand pure silvers, and raw material can not directly contact the material that other can have influence on quality in the operation process, must isolate with wrapping paper, even some more special product, mould also will use once polishing immediately once, requires strictness very.
Silver jewellery after the welding need carry out surface treatment again, keeps aesthetics so that make the jewellery finished product, and surface-treated equipment mainly contains polishing machine, steam engine, sand-blasting machine, pattern-etching machine etc., and instrument mainly contains the agate cutter and steel presses and smooth.Employing at first utilizes polishing machine to carry out polishing and makes jewellery surface generation gloss, go out various beautiful decorative patterns by designing requirement car flower at jewellery surface car with pattern-etching machine then, adopt the salt acid soak to handle afterwards again the jewellery surface is carried out degreasing or impurity, adopt agate cutter or steel to press and smooth the polishing jewellery at last and carry out the polishing processing, make jewellery surface-brightening such as mirror.And can adopt steam engine to carry out the steam cleaning, and can adopt sand-blasting machine that the jewellery surface is handled by designing requirement according to needs of production, to obtain and the diverse rough surface of jewellery glossy surface, strengthen the attractive in appearance of jewellery with texture.And temperature is controlled at 0 ± 5 ℃ when adopting the salt acid soak, jewellery soak time 30 ± 2 seconds, and hydrochloric acid can adopt concentrated hydrochloric acid.
Adopt pure silver ornament welding technique of the present invention, product can not reduce quality because of the circulation in welding process flow, has effectively guaranteed the quality of jewellery, and especially for ten thousand pure silver jewellery, its effect is more obvious; And weld more completely relatively, whole the lines flow smoothly, one integrated mass.Silver jewellery after the welding does not have big solder joint, and smooth surface is mellow and full, the quality of silver jewellery and attractive in appearance, but also can save energy, save welding powder, enhance productivity.And this soldering technology not only can be applied in the welding of silver jewelleries such as bangle, pin chain, necklace, bracelet, and also can be widely used in other is in the products such as various pure silver ornaments, handicraft and goods of furniture for display rather than for use of raw material production with silver, especially ten thousand pure silvers.
The specific embodiment
Embodiment one
15 ℃ of temperature, under the working environment of humidity 60%, adopting silver content is the bitch chain that 99.999% ten thousand pure silver raw material is made necklace, each bitch chain of needs welding is crossed borax water, to connect by the ready necklace of each bitch chain then and put neatly, guarantee appropriateness flexibly, after connecting, regulate the flame head of hydrogen-oxygen welding gun, the flame temperature that makes the hydrogen-oxygen welding gun is 965 ℃, weld heat input remains on 200 joules/cm, flame envelope with weldering flame melts the half-finished weld of each ten thousand pure silver jewellery so that bonding, realize rapid welding welding, the control aspect ratio of weld is controlled between 1~1.1, passes through polishing afterwards, the car flower, concentrated hydrochloric acid is controlled at 0 ℃ necklace soaked 30 seconds with degreasing and impurity, and adopt agate cutter or steel to press and smooth and carry out the polishing processing, make ten thousand pure silver necklaces.
Embodiment two
20 ℃ of temperature, under the working environment of humidity 45%, adopt ten thousand pure silver raw materials to make the bitch chain of bangle, each bitch chain of needs welding is crossed borax water, to connect by the ready bangle of each bitch chain then and put neatly, guarantee appropriateness flexibly, after connecting, regulate the flame head of gasoline welding gun, the flame temperature that makes the gasoline welding gun is 970 ℃, weld heat input remains on 190 joules/cm, move with 0.9cm/s speed with the trend of the flame envelope that welds flame along each bitch chain welding position, the weld of each ten thousand pure silver bangle is melted so that bonding, realize rapid welding welding, the control aspect ratio of weld is controlled between 1.1~1.2, successively each bitch chain is welded to connect, passes through polishing afterwards, the car flower, hydrochloric acid is controlled at 5 ℃ necklace soaked 28 seconds with degreasing and impurity, and adopt agate cutter or steel to press and smooth and carry out the polishing processing, make ten thousand pure silver bangles.
Embodiment three
25 ℃ of temperature, under the working environment of humidity 50%, adopt ten thousand pure silver raw materials to make the jewellery semi-finished product, each jewellery semi-finished product of needs welding are crossed borax water, then the silver jewellery semi-finished product are set level and the welding position is alignd, regulate the flame head of gasoline welding gun, the flame temperature that makes the gasoline welding gun is 960 ℃, weld heat input remains on 210 joules/cm, flame envelope with weldering flame melts the half-finished weld of each silver jewellery so that bonding, realize rapid welding welding, the control aspect ratio of weld is controlled at 1.1, passes through polishing afterwards, the car flower, after concentrated hydrochloric acid immersion and polishing are handled, make silver jewellery.