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A technology for forming sections and titanium welded pipes, applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of different forming effects, uneven forming of titanium strips, insufficient roundness of pipes, etc., to achieve good surface smoothness, The effect of high uniformity and reduced production equipment requirements
Inactive Publication Date: 2018-07-20
LUOYANG SUNRUI TI PRECISION CASTING
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Problems solved by technology
Due to the existence of multi-segment arcs, the existing multi-segment arc pass design structure will make the titanium strip form unevenly, and the forming effect of each area is different. After welding, the roundness of the pipe is obviously not enough, and subsequent sizing is required. Only continuous calibration of the link can ensure the pipe diameter is qualified, which causes huge wear of the sizing die
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Embodiment 2
[0045]
[0046] In the titanium welded pipe forming section mold used in this example, the upper rolls of the open rolls (F1~F4) in the flat rolls are made of mold steel Cr12MoV, and the rest of the flat rolls are made of bakelite.
[0047] Its processing flow is:
[0048] The first step, cleaning the titanium belt: the titanium belt enters the cleaning device before entering the forming mold, and uses a high-pressure air gun to remove the sundries and small titanium chips on its surface.
[0049] The second step, threading debugging: the front end of the titanium belt uses steel wire to make it pass through the mold of the forming section one by one, and the mold rollers are pressed down and formed in turn. Adjust the welding parameters to make it enter the rough sizing after the edge welding, and then enter the annealing furnace.
[0050] In the third step, the annealing temperature is set at 570°C, the annealing speed is consistent with the main line speed, and then ent...
Embodiment 3
[0054]
[0055] In the titanium welded pipe forming section mold used in this example, the upper rolls of the open rolls (F1~F4) in the flat rolls are made of mold steel Cr12MoV, and the rest of the flat rolls are made of bakelite.
[0056] Its processing flow is:
[0057] The first step, cleaning the titanium belt: the titanium belt enters the cleaning device before entering the forming mold, and uses a high-pressure air gun to remove the sundries and small titanium chips on its surface.
[0058] The second step, threading debugging: the front end of the titanium belt uses steel wire to make it pass through the mold of the forming section one by one, and the mold rollers are pressed down and formed in turn. Adjust the welding parameters to make it enter the rough sizing after the edge welding, and then enter the annealing furnace.
[0059] In the third step, the annealing temperature is set at 570°C, the annealing speed is consistent with the main line speed, and then ent...
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Abstract
The invention discloses a titanium welded tube forming section mould. The titanium welded tube forming section mould comprises an odder number of pressing roller groups which are sequentially arrangedleft and right, wherein the pressing roller groups comprises flat roller groups and vertical roller groups; a raw material titanium belt is formed into a titanium welded tube after being sequentiallypressed through the odder number of pressing roller groups; the flat roller groups and the vertical roller groups are arranged in a spaced mode; front and tail ends of the forming section mould are equipped with the flat roller groups; each flat roller groups comprises an opening roller group and a closed roller group, wherein flat rollers positioned at the lower side in the opening roller groupand flat rollers in the closed roller group are made of bakelite; except from the flat roller group at the front end of the forming section mould, each of matched parts of upper and lower flat rollerholes of the rest of the roller groups is formed by a section of a circular arc. The titanium welded tube forming section mould can adopt a titanium belt which is low in surface roughness and has an acid-pickled or grinded surface as a raw material, can effectively avoid grinding crack defects on a formed surface, is good in wear resistance, is long in service life, and is high in production efficiency; and the processed finished product titanium welded tube is good in uniformity, is high in dimension precision and is excellent in quality.
Description
technical field [0001] The invention relates to the technical field of forming molds, in particular to a titanium welded pipe forming section mold which can use acid-washed surfaces and low-roughness titanium strips as raw materials. Background technique [0002] Titanium and titanium alloys have the advantages of high specific strength and excellent corrosion resistance. Titanium welded pipes made of pure titanium cold-rolled strips by cold bending and welding are widely used as heat exchange pipes in coastal thermal power plants, nuclear power plants and seawater desalination equipment. in the device. This kind of titanium welded pipe for cooling device has a thin-walled, medium-sized and small-mouth structure. It is made of cold-rolled titanium strip as raw material and then welded by forming molds gradually after cold bending deformation. [0003] In the prior art, the titanium welded pipe forming section mold is mainly made of mold copper (such as TS4) as the raw mate...
Claims
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Application Information
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