CN105817846A - Titanium cylinder machining process - Google Patents
Titanium cylinder machining process Download PDFInfo
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- CN105817846A CN105817846A CN201610403990.2A CN201610403990A CN105817846A CN 105817846 A CN105817846 A CN 105817846A CN 201610403990 A CN201610403990 A CN 201610403990A CN 105817846 A CN105817846 A CN 105817846A
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- vacuum
- brazing
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- drying oven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to the field of mechanical manufacturing, in particular to a titanium cylinder machining process. The titanium cylinder machining process comprises the steps of raw material preparation and processing, reeling forming, part grinding, part assembly, surface cleaning for dust and oil removal, vacuum brazing, detection after welding, surface treatment and the like. The titanium cylinder machining process adopts a vacuum brazing furnace to perform automatic brazing and replace manual argon arc welding, the degree of automation is high, the brazing efficiency and quality are improved, and the harm of the brazing to people is also reduced.
Description
Technical field
The present invention relates to mechanical manufacturing field, particularly relate to a kind of titanium cylinder processing technique.
Background technology
Titanium is a kind of chemical element, and chemical symbol Ti, is a kind of argenteous transition metal, and it is lightweight, and (density is 4.54g/cm3, lighter by 43% than steel), intensity is high, resistance to corrosion is strong (including sea water, chloroazotic acid and chlorine), thermostability is fine, and fusing point is up to 1668 DEG C.The hardness of titanium and iron and steel are similar, and its weight almost only has the half of iron and steel of same volume, although titanium is slightly than aluminum weight more a bit, and its hardness big 2 times than aluminum；The intensity of titanium is big, and pure titanium tensile strength reaches as high as 180kg/mm2.Due to the chemical property that it is stable, good strong acid high temperature resistant, low temperature resistant, anti-, anti-highly basic, and high intensity, low-density, it is " space metal " by good reputation.
Titanium can be melt into alloy with other elements such as ferrum, aluminum, vanadium or molybdenums, produces the light-alloy of high intensity, although the intensity of some steel is slightly above titanium alloy, but the specific strength of titanium alloy (tensile strength and the ratio of density) exceedes high-quality steel；High-temperature capability, low-temperature flexibility and the fracture toughness that titanium alloy has had.The character of titanium and temperature and existing forms thereof, purity have extremely close relationship.Under room temperature, fine and close Titanium chemism is the least, and titanium surface easily generates one layer of very thin fine and close oxide film, can resist the strong acid even effect of chloroazotic acid, show strong corrosion resistance.But powder titanium chemism is the highest, spontaneous combustion can be caused in atmosphere.The activity of titanium increases sharply when a temperature increases, and the most at high temperature titanium can material chemical combination generation vigorous reactions many with halogen, oxygen, sulfur, nitrogen etc..
Titanium alloy has good premium properties, it has very important using value and wide application prospect in fields such as Aero-Space (jet engine, rocket, guided missile and spacecraft), military affairs, industrial procedure (chemical industry and various containers, reactor, heat exchanger, distillation column, pipeline, pump and the valve in petroleum product, desalinization and papermaking), Vehicle Engineering, Agrifood, biomedical engineering (artifucial limb, orthopedic implant and dental instruments and implant), sporting goods, jewelry and mobile phones.
At present; the processing technique of the cylinder (pump) of titanium material includes Raw material processing, rolled forming, manual longitudinal seam welding (compound mode using argon arc bottoming and gas shielded welding carries out full weld seam welding, for the most up to standard can being modified by hydraulic press and scalable radian platen with circularity), weld seam detection, heat treatment；The steps such as then girth welding, weld seam detection, heat treatment；It is to use manual argon arc welding to weld each weld respectively, check, weld other weld after heat treatment again, and its operation is complex.
Titanium alloy easily reacts with materials such as oxygen, nitrogen, hydrogen, thus be main surface layer at one layer of oxide of its Surface Creation, the moistening of solder can be stoped during soldering, existing processing technique is the most effectively removed this oxide layer, causing product rosin joint serious, product quality is poor.
Because the chemical property of titanium is the most active; the most easily react with air; therefore; it is all in the industry to use the compound mode of argon arc bottoming and gas shielded welding to carry out manual full weld seam welding when welding titanium material; for the most up to standard can being modified by hydraulic press and scalable radian platen with circularity, it operates complexity, and technical difficulty is higher; the welder needing technology maturation operates, and human cost is higher；Product has only been accomplished surface argon shield by argon arc welding, and the hollow inside of cylinder (pump) exists oxidation and the defect of hydrogenation, and weld seam not weld penetration, occur that stress is concentrated, be in use easily generated fatigue and rupture；The crator of argon arc welding is relatively big, and postwelding arranges difficulty；Meanwhile, the speed of argon arc welding is relatively slow, and production efficiency is relatively low, is not suitable for producing in enormous quantities；It addition, argon is harmful, for the welder of this work of long campaigns, be there is certain threat in its health.
Summary of the invention
For drawbacks described above present in prior art, it is desirable to provide a kind of simple to operate, cost of labor is low, firm welding, weld seam are full, welding efficiency is high, the titanium cylinder processing technique that uses vacuum brazing to carry out automatic welding.
To achieve these goals, the present invention by the following technical solutions: a kind of titanium cylinder processing technique, comprise the following steps:
Raw-material preparation and processing: be carried out material after drying, by beveling machine, edge planer, the required soldering angle of lathe machining and the part material of welding pattern groove；
Rolled forming: use numerical control rolling machine to be programmed part material and roll into required part by being sized；
Part is polished: solder side carries out polishing and removes the oxide layer of titanium alloy surface；
Part assembles: is assembled by each part, needs weld to load onto solder sheet the most between the components；
Surface clean dedusting oil removing: first with the clear water of 30 ~ 40 DEG C, the product that assembly test is qualified is carried out, carries out ultrasonic waves for cleaning with acetone the most again；
Vacuum brazing: the product after cleaning is fixed on brazing jig, and within hour after cleaning, the product being fixed on brazing jig is put into vacuum brazing furnace and carry out automatic brazing；
Inspection after welding: range estimation product appearance is with or without viscous glutinous, deformation, and weld seam is the fullest, and product butt welded seam qualified for initial survey is carried out RT, UT, PT detect whether qualified；
Surface processes: removing the oxide skin of heat treatment generation, then acid wash passivation by sandblasting and purify the corrosion resistance of surface raising material, machine polishes, scrubs, and increases surface flatness.
Preferably, the gap between each part after assembling is 1.1mm ~ 1.5mm, solder sheet be titanium based solder sheet, its thickness be 1mm.
The brazing process parameter of above-mentioned vacuum brazing is as follows:
1) putting the workpiece in wherein after first vacuum brazing furnace being preheating to 40 ~ 50 DEG C, in 40 ~ 50min, vacuum drying oven is heated to 600 ~ 700 DEG C, be incubated 10 ~ 20min, vacuum is 6 ~ 7 × 10-3Pa；
2) in 15 ~ 20min, vacuum drying oven being warming up to 780 ~ 940 DEG C, be incubated 30 ~ 40min, vacuum is 3 ~ 5 × 10-3Pa；
3) in 10 ~ 15min, vacuum drying oven being warming up to 970 ~ 1050 DEG C, be incubated 100 ~ 120min, vacuum is 1 ~ 2 × 10-2Pa；
4) in 15 ~ 25min, vacuum drying oven is cooled to 790 ~ 815 DEG C, after insulation 15 ~ 20min, vacuum drying oven is cooled to 600 ~ 650 DEG C, is incubated 20 ~ 25min, then power-off；Until workpiece temperature is down to 80 ~ 100 DEG C.
Compared with the prior art, due to the fact that and have employed such scheme, have the advantage that
First, solder side is carried out polishing and removes the oxide layer of titanium alloy surface, promote that solder can flow smoothly and mother metal is carried out moistening, provide prerequisite for welding is firm；When it can prevent soldering, oxide layer stops solder flowing to cause solder to cause product rosin joint (weld seam not weld penetration), stress to concentrate the defects such as easy fatigue fracture to mother metal moistening is impermeable.
Second, first with the clear water of 30 ~ 40 DEG C, the product that assembly test is qualified is carried out, product surface major part greasy dirt can be removed, save acetone consumption for follow-up acetone cleaning process, saved production cost；Carry out ultrasonic waves for cleaning with acetone the most again, it is ensured that product surface oil-free is without dirt, it is ensured that solder energy smooth outflow good moistening mother metal during soldering, lay a good foundation for high-quality welding.
3rd, using vacuum brazing to replace manual argon arc welding soldering, without brazing flux and can guarantee that workpiece is not oxidized, and the oxide-film on mother metal and solder surface is progressively decomposed, destroys and removes, afterwards, brazing filler metal melts also forms infiltration, joint filling under capillary action to mother metal, and weld seam is full, it is not likely to produce rosin joint phenomenon, welding quality is good, and crator is little, appearance looks elegant；Workpiece entirety heats, and can reduce its deformation；Soldering precision is high, can meet requirements of mass production；Realize soldering and heat treatment integral process, the stress because rolling deformation, welding produces, refiner material crystal grain can be removed while reducing the outer heat treatment step of stove, improve the mechanical performance of material, extend the service life of cylinder；Technological parameter Automated condtrol, is beneficial to eliminate manual control error, improves welding quality；Good work environment, few to operator's physical impairment, and environmental protection.
4th, brazing process uses Segmented heating and cooling heat treatment, by reasonably controlling brazing temperature, holding time, vacuum, fully interact with mother metal after promoting solder fully to melt, and joint filling is effective, weld seam is full, and firm welding, brazing quality are good, and qualification rate is high, use the life-span long.In high-temperature soldering district, temperature retention time is 100 ~ 120min, makes solder and mother metal mutually spread and then eliminate brittlement phase and low melting eutectics in brazed seam.Reasonably programming rate, it is to avoid programming rate is too fast makes weldment temperature distributing disproportionation even, thus induce deformation, dislocation and the generation of internal stress, and avoid programming rate to cause mother metal crystal grain to grow up the most slowly；In 15 ~ 25min, vacuum drying oven is cooled to 790 ~ 815 DEG C, after insulation 15 ~ 20min, vacuum drying oven is cooled to 600 ~ 650 DEG C, is incubated 20 ~ 25min, then power-off；Until workpiece temperature is down to 80 ~ 100 DEG C, avoid causing workpiece inhomogeneous cooling even because cooling rate is too fast, form thermal stress and the generation of the phenomenon such as deformation, weld cracking, heat treatment is integrated with soldering, such that it is able to reduce post weld heat treatment operation, while improve production efficiency, also improve conforming product rate.
5th, in order to ensure the elaboration of Assembly stability and size, brazing jig is used to be fixed soldering.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated: a kind of titanium cylinder processing technique, comprises the following steps:
Raw-material preparation and processing: material is carried out after drying, by beveling machine, edge planer, the required soldering angle of lathe machining and the part material of welding pattern groove, according to material thickness, material, plasticity preferably uses cold working, the employing hot-working that plasticity is poor；
Rolled forming: use numerical control rolling machine to carry out automatic and automanual programming and part material is rolled into required part by being sized；
Part is polished: use No. 200, No. 400 and No. 600 tissue papers solder side to carry out polishing and removes the oxide layer of titanium alloy surface successively, it is ensured that solder energy well moistening mother metal during soldering；
Part assembles: is assembled by each part, needs weld to load onto solder sheet the most between the components；The gap between each part after assembling is 1.1mm ~ 1.5mm, solder sheet be titanium based solder sheet, its thickness be 1mm；Preferably, solder sheet is Ti-Zr-Ni-Cu quaternary brazing alloy；
Surface clean dedusting oil removing: first with the clear water of 30 ~ 40 DEG C, the product that assembly test is qualified is carried out, carries out ultrasonic waves for cleaning with acetone the most again；
Vacuum brazing: the product after cleaning is fixed on brazing jig, and within hour after cleaning, the product being fixed on brazing jig is put into vacuum brazing furnace and carry out automatic brazing；Brazing jig uses the rustless steel of resistance to 1100 DEG C of high temperature above to be made；Brazing process parameter is as follows:
1) putting the workpiece in wherein after first vacuum brazing furnace being preheating to 40 ~ 50 DEG C, in 40 ~ 50min, vacuum drying oven is heated to 600 ~ 700 DEG C, be incubated 10 ~ 20min, vacuum is 6 ~ 7 × 10-3Pa；First preheat, make in-furnace temperature uniform, and shorten the product time in stove；
2) in 15 ~ 20min, vacuum drying oven being warming up to 780 ~ 940 DEG C, be incubated 30 ~ 40min, vacuum is 3 ~ 5 × 10-3Pa；
3) in 10 ~ 15min, vacuum drying oven being warming up to 970 ~ 1050 DEG C, be incubated 100 ~ 120min, vacuum is 1 ~ 2 × 10-2Pa；
4) in 15 ~ 25min, vacuum drying oven is cooled to 790 ~ 815 DEG C, after insulation 15 ~ 20min, vacuum drying oven is cooled to 600 ~ 650 DEG C, is incubated 20 ~ 25min, then power-off；Until workpiece temperature is down to 80 ~ 100 DEG C.
Inspection after welding: range estimation product appearance is with or without viscous glutinous, deformation, and weld seam is the fullest, and product butt welded seam qualified for initial survey is carried out RT, UT, PT detect whether qualified；
Surface processes: removing the oxide skin of heat treatment generation, then acid wash passivation by sandblasting and purify the corrosion resistance of surface raising material, machine polishes, scrubs, and increases surface flatness.
Claims (3)
1. a titanium cylinder processing technique, it is characterised in that comprise the following steps:
Raw-material preparation and processing: be carried out material after drying, by beveling machine, edge planer, the required soldering angle of lathe machining and the part material of welding pattern groove；
Rolled forming: use numerical control rolling machine to be programmed part material and roll into required part by being sized；
Part is polished: solder side carries out polishing and removes the oxide layer of titanium alloy surface；
Part assembles: is assembled by each part, needs weld to load onto solder sheet the most between the components；
Surface clean dedusting oil removing: first with the clear water of 30 ~ 40 DEG C, the product that assembly test is qualified is carried out, carries out ultrasonic waves for cleaning with acetone the most again；
Vacuum brazing: the product after cleaning is fixed on brazing jig, and within hour after cleaning, the product being fixed on brazing jig is put into vacuum brazing furnace and carry out automatic brazing；
Inspection after welding: range estimation product appearance is with or without viscous glutinous, deformation, and weld seam is the fullest, and product butt welded seam qualified for initial survey is carried out RT, UT, PT detect whether qualified；
Surface processes: removing surface scale, then acid wash passivation by sandblasting and purify the corrosion resistance of surface raising material, machine polishes, scrubs, and increases surface flatness.
Titanium cylinder processing technique the most according to claim 1, it is characterised in that: the gap between each part after assembling is 1.1mm ~ 1.5mm, solder sheet be titanium based solder sheet, its thickness be 1mm.
Titanium cylinder processing technique the most according to claim 1 and 2, it is characterised in that: vacuum brazing technique parameter is as follows:
1) putting the workpiece in wherein after first vacuum brazing furnace being preheating to 40 ~ 50 DEG C, in 40 ~ 50min, vacuum drying oven is heated to 600 ~ 700 DEG C, be incubated 10 ~ 20min, vacuum is 6 ~ 7 × 10-3Pa；
2) in 15 ~ 20min, vacuum drying oven being warming up to 780 ~ 940 DEG C, be incubated 30 ~ 40min, vacuum is 3 ~ 5 × 10-3Pa；
3) in 10 ~ 15min, vacuum drying oven being warming up to 970 ~ 1050 DEG C, be incubated 100 ~ 120min, vacuum is 1 ~ 2 × 10-2Pa；
In 15 ~ 25min, vacuum drying oven is cooled to 790 ~ 815 DEG C, after insulation 15 ~ 20min, vacuum drying oven is cooled to 600 ~ 650 DEG C, is incubated 20 ~ 25min, then power-off；Until workpiece temperature is down to 80 ~ 100 DEG C.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107413883A (en) * | 2017-09-25 | 2017-12-01 | 宝鸡市永盛泰钛业有限公司 | A kind of processing method of titanium alloy thin-walled tube stock |
| CN109590608A (en) * | 2019-01-15 | 2019-04-09 | 沧州宏涛智能设备有限公司 | One kind connects to integral type welding penetration welding method and device |
| CN109894825A (en) * | 2018-12-28 | 2019-06-18 | 盐城市成功机械制造有限公司 | A kind of water cooling large bamboo hat with a conical crown and broad brim built-up welding processing method |
| CN110614551A (en) * | 2019-08-17 | 2019-12-27 | 河北欧姆隆机械有限公司 | Composite pump body manufacturing device and manufacturing process |
| CN111036855A (en) * | 2019-11-18 | 2020-04-21 | 洛阳双瑞精铸钛业有限公司 | Forming method of titanium alloy front cover shell |
| CN111250937A (en) * | 2020-03-16 | 2020-06-09 | 恒立科技有限公司 | Manufacturing process of titanium alloy packaging barrel |
| CN112338452A (en) * | 2020-10-23 | 2021-02-09 | 西安远航真空钎焊技术有限公司 | Processing method of ground test device for spraying liquid |
| CN113352062A (en) * | 2021-08-11 | 2021-09-07 | 西安远航真空钎焊技术有限公司 | Preparation method of combustion chamber cylinder |
| CN113997018A (en) * | 2021-11-02 | 2022-02-01 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN114227282A (en) * | 2022-01-10 | 2022-03-25 | 西安泰金工业电化学技术有限公司 | Titanium cylinder processing production line and manufacturing flow thereof |
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| CN111036855A (en) * | 2019-11-18 | 2020-04-21 | 洛阳双瑞精铸钛业有限公司 | Forming method of titanium alloy front cover shell |
| CN111250937A (en) * | 2020-03-16 | 2020-06-09 | 恒立科技有限公司 | Manufacturing process of titanium alloy packaging barrel |
| CN112338452A (en) * | 2020-10-23 | 2021-02-09 | 西安远航真空钎焊技术有限公司 | Processing method of ground test device for spraying liquid |
| CN113352062B (en) * | 2021-08-11 | 2021-11-19 | 西安远航真空钎焊技术有限公司 | Preparation method of combustion chamber cylinder |
| CN113352062A (en) * | 2021-08-11 | 2021-09-07 | 西安远航真空钎焊技术有限公司 | Preparation method of combustion chamber cylinder |
| CN113997018A (en) * | 2021-11-02 | 2022-02-01 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN113997018B (en) * | 2021-11-02 | 2023-03-14 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN114227282A (en) * | 2022-01-10 | 2022-03-25 | 西安泰金工业电化学技术有限公司 | Titanium cylinder processing production line and manufacturing flow thereof |
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| CN105817846B (en) | 2018-01-12 |
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