CN101885137B - Method for manufacturing aluminum liner of vehicular composite cylinder - Google Patents
Method for manufacturing aluminum liner of vehicular composite cylinder Download PDFInfo
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- CN101885137B CN101885137B CN 201010235393 CN201010235393A CN101885137B CN 101885137 B CN101885137 B CN 101885137B CN 201010235393 CN201010235393 CN 201010235393 CN 201010235393 A CN201010235393 A CN 201010235393A CN 101885137 B CN101885137 B CN 101885137B
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Abstract
The invention discloses a method for manufacturing an aluminum liner of a vehicular composite cylinder, which is used for manufacturing the aluminum liner of the vehicular composite cylinder. The aluminum liner consists of a thin-walled cylinder body of the aluminum liner, an end enclosure gradually thickening part and an opening part. The aluminum liner is manufactured by adopting a method of reducing the wall thickness of a thick-wall aluminum pipe by over 60 percent by one time of rotary pressing by a 450 strong spinning reduction machine, forming the end enclosure part and the opening part by using a 412 spinning necking machine, and machining the connecting threads on the opening part after solution ageing heat treatment. The aluminum liner of the vehicular composite cylinder has the advantages of high quality, large diameter, thin wall thickness, small weight capacity ratio (weight/capacity), high geometric dimensioning accuracy, high quality of inner and outer surfaces and the like, and has the excellent application and market prospects.
Description
Technical field
The present invention relates to gas cylinder manufacturing process field, particularly a kind of manufacturing approach of aluminum liner of vehicular composite cylinder.
Background technology
Developing rapidly of auto industry brought atmosphere pollution and energy shortage, widelys popularize new-energy automobile and has crucial meaning.Compressed natural gas (CNG) automobile is because its discharge performance is good, and operating cost is low, technology maturation, safe and reliable, obtains fast development in the whole world, and is also increasing to the demand of vehicle CNG gas cylinder.Original vehicle CNG gas cylinder all is steel gas cylinder or steel inner bag hoop winding gas cylinder, and weight is big.And the aluminum liner carbon fiber twines composite cylinder entirely because its advanced process technology and material; Have characteristics such as security performance is good, in light weight, corrosion-resistant; Become the development trend of vehicle CNG gas cylinder, the market demand is increasing, to the also increase thereupon of demand of aluminum liner.
Aluminum liner of vehicular composite cylinder is except requiring mechanical properties such as inner bag intensity meet the demands, and also requires in light weightly, and anti-fatigue performance is good, and is therefore higher to the quality requirement of geometric accuracy such as the diameter of inner bag, wall thickness and surfaces externally and internally.Aluminum liner of vehicular composite cylinder manufacturing at present mainly contains following dual mode:
A kind of is to adopt seamless aluminium tubing two ends spinning closing-in, after heat treatment reprocesses the oral area screw thread then and processes; Another kind is to adopt the aluminium bar blank to pull out to stretch through overshoot to obtain the cast material base, closes up, heat treatment, screw thread is processed into again.Its shortcoming of aluminum liner that these two kinds of methods are produced is: product weight is bigger, and inner surface quality is poor, and product reliability is poor.
A kind of in addition method is to adopt aluminium sheet through punching stretch forming; Close up again, heat treatment, screw thread is processed into aluminum liner, can obtain better, the lightweight aluminum liner of quality, but aluminium sheet punching stretch arts demand in middle operation to the material heat treatment of annealing; Bigger to products of different specifications mould input; Cost is too high, and the aluminium sheet processing dimension is subject to the stretcher size, the inner bag that very difficult processing diameter 200mm is above, volume 100L is above.And the product volume that aluminum liner of vehicular composite cylinder needs is generally 100L to 300L.
So until now, it is low still to lack production cost, and the product diameter is big, in light weight, geometric accuracy is high, the measured satisfactory manufacturing approach that is used for the aluminum liner of vehicular composite cylinder of surfaces externally and internally matter.
Summary of the invention
The purpose of this invention is to provide a kind of new lower aluminum liner of vehicular composite cylinder manufacturing approach of production cost, use the aluminum liner of the vehicular composite cylinder of this method making to have advantages such as the product diameter is big, in light weight, geometric accuracy is high, the surfaces externally and internally quality is good.
For achieving the above object; The technical scheme that the present invention adopts is: a kind of manufacturing approach of aluminum liner of vehicular composite cylinder; Comprise: the aluminium alloy seamless pipe; The last 450 revolved attenuate machine, 412 spinning closing-in machines, carbide alloy band saw and Digit Control Machine Tool, and method and the step of making aluminum liner of vehicular composite cylinder 4 are following:
1., selection
Choose suitable aluminium alloy seamless pipe raw material as base material according to product design, and by its surface quality of standard test, diameter and wall thickness,
2., blanking
According to the aluminium alloy seamless pipe of designing requirement sawing Len req,
3., attenuate is revolved at qualified aluminium alloy seamless pipe middle part by force, form aluminum liner thin-wall barrel 1, the wall thickness in each 200mm scope of aluminium alloy seamless pipe two ends is attenuate not, and the aluminium alloy seamless pipe that revolves by force behind the attenuate becomes bottle base,
4., use the carbide alloy band saw with bottle base two ends Qi Kou,
5., clean the inside and outside surface of bottle base after neat mouthful,
6., to the bottle base after cleaning by the detection of only carrying out ultrasonic inspection and outward appearance,
7., each 200mm scope internal rolling closes up and forms end socket gradual change and thicken position 2 and oral area 3 at the bottle base two ends respectively to adopt 412 spinning closing-in machines,
Said aluminum liner thin-wall barrel 1 and said end socket gradual change thicken the semi-finished product of position 2 and the said aluminum liner of vehicular composite cylinder 4 of oral area 3 formation,
8., the semi-finished product integral body of the said aluminum liner of vehicular composite cylinder 4 behind the spinning closing-in of above-mentioned two ends is carried out T6 heat treatment,
9.. after the said oral area 3 at the said aluminum liner of vehicular composite cylinder 4 semi-finished product two ends after adopting Digit Control Machine Tool to above-mentioned heat treatment carries out the processing of connecting thread respectively, promptly form said aluminum liner of vehicular composite cylinder 4 finished products,
10., said aluminum liner of vehicular composite cylinder 4 finished products are carried out cleaning, drying and carry out product inspection by product standard.
The method of qualified aluminium alloy seamless Guan Qiang being revolved attenuate is: what selected the last 450 revolved the attenuate machine revolves movement mould size by force; Mandrel surface is cleaned out; Adopt the last 450 to revolve the attenuate machine attenuate is revolved at above-mentioned qualified aluminium alloy seamless pipe material middle part by force, make the aluminium alloy seamless thickness of pipe wall reach the requirement of aluminum liner barrel designs, form said aluminum liner thin-wall barrel 1; Wall thickness in each 200mm scope of aluminium alloy seamless pipe two ends is attenuate not, and the aluminium alloy seamless pipe that revolves by force behind the attenuate becomes bottle base.
The method of cleaning the inside and outside surface of the bottle base after neat mouthful is: jet cleaning is carried out on the inside and outside surface of bottle base with behind the hot water alignment mouth, and water temperature is 80 ℃, and scavenging period is 3 minutes, makes the inside and outside surperficial free from admixture, the oil stain that clean the back bottle base.
Bottle base to after cleaning pursues the following detection of only carrying out ultrasonic inspection and outward appearance:
1., the size Control scope of the said aluminum liner thin-wall barrel 1 at bottle base middle part is: the wall thickness tolerance that revolves the said aluminum liner thin-wall barrel 1 of the strong supination of attenuate machine through the last 450 is 5%, and extreme difference is 0.4mm,
2., surface quality detects: the surfaces externally and internally of said aluminum liner thin-wall barrel 1 should not have impression, overlapping, projection, crackle and is mingled with, and the actual wall thickness of removing the said aluminum liner thin-wall barrel 1 after the above-mentioned shortcoming must not be less than design wall thickness.
Spinning closing-in forms the method that said aluminum liner of vehicular composite cylinder 4 half-finished end socket gradual changes thicken position 2: the mode of texturing that adopts small deformation amount multi-pass through 412 spinning closing-in machines; Make the wall thickness in end socket centre reach 4 times of said aluminum liner thin-wall barrel 1 design wall thickness, and realize the progressive thickness rounding off.
It is following that said aluminum liner of vehicular composite cylinder behind the spinning closing-in 4 semi-finished product integral body are carried out the T6 heat-treating methods:
1., to the semi-finished product heating-up temperature of above-mentioned aluminum liner 4 515-575 ℃ the time, be incubated the quenching of coming out of the stove after 120-130 minute, carry out molten admittedly the processing, add 20% ployalkylene glycol polymer in quenching technical usable oils or the water as hardening media,
2., the semi-finished product of above-mentioned aluminum liner 4 are carried out Ageing Treatment, the timeliness heating-up temperature is in the time of 170-180 ℃, and temperature retention time is 300-310 minute, and cool off in air naturally the semi-finished product of said aluminum liner of vehicular composite cylinder 4 back of coming out of the stove.
After adopting Digit Control Machine Tool that the half-finished said oral area 3 of said aluminum liner of vehicular composite cylinder 4 is carried out connecting thread processing; Form the finished product of said aluminum liner of vehicular composite cylinder 4; This connecting thread should be the straight thread that connects fully; Thread size and tolerance meet the requirement of GB/T 196 and GB/T 197, tooth form should be set one's teeth on edge, flat at the bottom of the flat tooth, tooth two-wire, tooth, cusp, tooth is wealthy and thread surface on significantly ripple and burr.
The method that said aluminum liner of vehicular composite cylinder 4 is carried out cleaning, drying is: with hot water jet cleaning is carried out on said aluminum liner of vehicular composite cylinder 4 inside and outside surfaces, water temperature is 80 ℃, and scavenging period is 3 minutes, dries up the surface with compressed air then.
Owing to adopted technique scheme, the present invention to have following distinguishing feature:
1, the present invention has developed and has adopted the last 450 to revolve spinning of attenuate machine with thickness of pipe wall attenuate more than 60%, carry out the aluminum liner new technology of seal head molding, reprocessing oral area screw thread is processed after solution aging heat treatment then production vehicular composite cylinder with 412 spinning closing-in machines again; Wherein, The last 450 revolved the wall thickness tolerance 5% of the pipe behind the attenuate machine spinning, extreme difference 0.4mm.
2, adopt big, the wall thickness of aluminum liner quality height, product diameter of the vehicular composite cylinder of the present invention's making, weight capacity ratio (weight/volume) is little, geometric accuracy is high, the surfaces externally and internally quality is good.
3, technology of the present invention is simple, production cost is low, and output is big, is fit to big commercial production.
4, security is good; When carrying out seal head molding with 412 spinning closing-in machines among the present invention; Adopt the mode of texturing of small deformation amount multi-pass; Make the wall thickness in end socket centre reach more than 4 times of barrel designs wall thickness, and realize the progressive thickness rounding off, guarantee that aluminum liner satisfies pressures cycle test, explosion bulge test performance requirement.
5, the wall thickness tolerance of the aluminum liner of the vehicular composite cylinder of employing the present invention making is little.
Description of drawings
Fig. 1-structural representation of the present invention
Wherein: 1--aluminum liner thin-wall barrel, the gradual change of 2--end socket thickens the position, 3--oral area, 4--aluminum liner of vehicular composite cylinder.
The specific embodiment
The present invention is used to make the aluminum liner of vehicular composite cylinder; This aluminum liner 4 thickens position 2 by aluminum liner thin-wall barrel 1, end socket gradual change and oral area 3 constitutes; Employing is revolved spinning of attenuate machine with the thickness of pipe wall attenuate more than 60% with heavy wall aluminium alloy seamless pipe through the last 450; Carry out end socket and oral area moulding with 412 spinning closing-in machines again, reprocessing oral area connecting thread method is processed after solution aging heat treatment then.Adopt the aluminum liner of the vehicular composite cylinder that the present invention makes to have quality height, big, the wall thickness of diameter, weight capacity ratio little (weight/volume), distinguishing feature such as geometric accuracy is high, the surfaces externally and internally quality is good.
It is low that the difficult point of aluminum liner of vehicular composite cylinder manufacturing is difficult to satisfy production cost exactly, and the product diameter is big, geometric accuracy is high, weight capacity ratio little (weight/volume), the measured product requirement of surfaces externally and internally matter.And this patent more than 60%, under the situation of the constancy of volume, has alleviated the weight of aluminum liner with the thickness of pipe wall attenuate through adopting the last 450 to revolve spinning of attenuate machine greatly; Adopt 412 spinning closing-in machines to carry out end socket and oral area moulding again; Adopt the mode of texturing of small deformation amount multi-pass; Make the wall thickness in end socket centre reach more than 4 times of cylindrical shell 1 design wall thickness; And realize the progressive thickness rounding off, guarantee that finished product aluminum liner 4 satisfies tired, explosion bulge test performance requirement.Detailed process step of the present invention is following:
1, chooses suitable aluminium alloy seamless pipe raw material as base material according to product design, and check its surface quality, diameter, wall thickness.
2, according to the aluminium alloy seamless pipe of designing requirement sawing Len req.
3, according to the selected movement mould size of revolving by force of aluminum liner intended diameter; Mandrel surface must be cleaned out; Aluminium alloy seamless pipe pipe material is revolved attenuate by force; Form aluminum liner thin-wall barrel 1, the wall thickness in each 200mm scope of aluminium alloy seamless pipe two ends is attenuate not, and the aluminium alloy seamless pipe that revolves by force behind the attenuate becomes bottle base.
4, use the carbide alloy band saw with bottle base two ends Qi Kou.
5, clean bottle base surface after neat mouthful, carry out jet cleaning with the inside and outside surface of bottle base after the hot water alignment mouthful, water temperature be 80 ℃ or more than, scavenging period is 3 minutes, makes the inside and outside surperficial free from admixture, the oil stain that clean the back bottle base.
6, the bottle base after cleaning is detected by only carrying out ultrasonic inspection and outward appearance as follows:
1., the size Control scope of the aluminum liner thin-wall barrel 1 at bottle base middle part is: the wall thickness tolerance of the aluminum liner thin-wall barrel 1 behind 412 spinning closing-in machine spinning is 5%, and extreme difference is 0.4mm,
2., surface quality detects: the surfaces externally and internally of aluminum liner thin-wall barrel 1 should not have impression, overlapping, projection, crackle and is mingled with, and the actual wall thickness of removing the aluminum liner thin-wall barrel 1 after the above-mentioned shortcoming must not be less than design wall thickness.
7, spinning closing-in forms the method that aluminum liner of vehicular composite cylinder 4 half-finished end socket gradual changes thicken position 2 and is: the mode of texturing that adopts small deformation amount multi-pass through 412 spinning closing-in machines; Make the wall thickness in end socket centre reach 4 times of aluminum liner thin-wall barrel 1 design wall thickness, and realize the progressive thickness rounding off.
8, the semi-finished product integral body of the aluminum liner of vehicular composite cylinder behind the spinning closing-in 4 is carried out T6 heat treatment:
1., to the semi-finished product heating-up temperature of above-mentioned aluminum liner 4 515-575 ℃ the time, be incubated the quenching of coming out of the stove after 120-130 minute, carry out molten admittedly the processing, add 20% ployalkylene glycol polymer in quenching technical usable oils or the water as hardening media,
2., the semi-finished product of above-mentioned aluminum liner 4 are carried out Ageing Treatment, the timeliness heating-up temperature is in the time of 170-180 ℃, and temperature retention time is 300-310 minute, and cool off in air naturally the semi-finished product of aluminum liner of vehicular composite cylinder 4 back of coming out of the stove.
9. adopt Digit Control Machine Tool that the semi-finished product of above-mentioned aluminum liner 4 are carried out the processing of oral area connecting thread, the processing back forms the finished product of aluminum liner 4, and this connecting thread should be the straight thread that connects fully, and thread size and tolerance meet the requirement of GB/T196 and GB/T197.Tooth form should set one's teeth on edge, flat at the bottom of the flat tooth, tooth two-wire, tooth, cusp, tooth is wealthy and thread surface on significantly ripple and burr.
10. finished product aluminum liner 4 is carried out cleaning, drying, jet cleaning is carried out on the inside and outside surface of aluminum liner with hot water, 80 ℃ of water temperatures or more than, scavenging period is 3 minutes, dries up the surface with compressed air then.
11. aluminum liner 4 is carried out product inspection by national standard; Inspection content comprises: inside and outside surface quality; By only checking that the quantity of oral area connecting thread button, critical size should adhere to specification, the aluminum liner wall thickness should be not less than minimal design wall thickness etc., and particular content is following:
1) roundness deviation of aluminum liner must not surpass 2% of this cross section mean outside diameter.
2) aluminum liner cylindrical shell outside diameter tolerance must not surpass nominal outside diameter ± 2%.
3) the axial linearity of aluminum liner cylindrical shell is no more than 3%.
4) aluminum liner concentricity promptly in the deviation between the minimum and maximum wall thickness on the same cross section, should not surpass 10% of measured place average wall thickness, and when average wall thickness during less than 4mm, deviation should be less than 0.8mm.
5) the aluminum liner length tolerance is ± 15mm.
Embodiment
The present invention is to be that 300L, specification are that the aluminum liner of 406 * 4.5mm is for implementing target with the nominal volume; Selecting material for use is that 6061 aluminium alloy seamless pipes are processed through operations such as wall thickness reduction, spinning closing-in, T6 heat treatment, portion's mouth processing and product detections, and concrete processing step is following:
1, chooses the 6061 aluminium alloy seamless pipe raw materials that specification is 428 * 15mm, and check its surface quality, diameter, wall thickness.
2, according to the aluminium alloy seamless pipe of designing requirement sawing Len req.
3, selectedly revolve movement mould size: 397mm by force, mandrel surface is cleaned out, and aluminium alloy seamless pipe pipe material is revolved attenuate by force become bottle base.
4, use the carbide alloy band saw to bottle base two ends Qi Kou.
5, the bottle base surface clean behind the alignment mouth is carried out jet cleaning with the inside and outside surface of bottle base behind the hot water alignment mouth, and water temperature is 80 ℃, and scavenging period is 3 minutes, cleans back bottle base surfaces externally and internally and answers free from admixture, oil stain.
6, bottle base is detected by only carrying out ultrasonic inspection and outward appearance.
The control range of aluminum liner thin-wall barrel 1 size of 406 * 4.5mm is: the wall thickness tolerance of the aluminum liner thin-wall barrel 1 after the last 450 revolved attenuate machine spinning is 5%, and extreme difference is 0.4mm.
Surface quality: the surfaces externally and internally of aluminum liner thin-wall barrel 1 should not have impression, overlapping, projection, crackle and is mingled with, and the actual wall thickness of removing the aluminum liner thin-wall barrel 1 after the above-mentioned shortcoming must not be less than design wall thickness.
7, spinning closing-in, the mode of texturing of employing small deformation amount multi-pass makes the wall thickness in end socket centre reach 4 times of the barrel designs wall thickness, and realizes the progressive thickness rounding off.
8, the semi-finished product to aluminum liner carry out whole T6 heat treatment; At first to the aluminum liner heating-up temperature 515-575 ℃ the time; Be incubated the quenching of coming out of the stove after 120-130 minute, carry out molten admittedly the processing, add 20% ployalkylene glycol polymer in quenching technical usable oils or the water as hardening media.Carry out Ageing Treatment then, the timeliness heating-up temperature is incubated 300-310 minute in the time of 170-180 ℃, and cool off at air naturally the back of coming out of the stove.
9, adopt Digit Control Machine Tool to carry out the processing of aluminum liner semi-finished product oral area connecting thread, the processing back forms the finished product of aluminum liner 4, and this connecting thread should be the straight thread that connects fully, and thread size and tolerance meet the requirement of GB/T 196 and GB/T 197.Tooth form sets one's teeth on edge, flat at the bottom of the flat tooth, tooth two-wire, tooth, cusp, tooth is wealthy and thread surface on significantly ripple and burr.
10, the aluminum liner finished product is carried out cleaning, drying, jet cleaning is carried out on the inside and outside surface of aluminum liner with hot water, at least 80 ℃ of water temperatures, scavenging period is 3 minutes, dries up the surface with compressed air then.
11, aluminum liner is carried out product inspection, inspection content comprises; Inside and outside surface quality checks, should adhere to specification etc. by quantity, the critical size of only checking the whorl of bottleneck button, and particular content is following:
1) the aluminum liner wall thickness should be not less than the minimal design wall thickness.
2) roundness deviation of aluminum liner must not surpass 2% of this cross section mean outside diameter.
3) aluminum liner cylindrical shell outside diameter tolerance must not surpass nominal outside diameter ± 2%.
4) the axial linearity of aluminum liner cylindrical shell is no more than 3 ‰.
5) finished product aluminum liner concentricity promptly in the deviation between the minimum and maximum wall thickness on the same cross section, should not surpass 10% of measured place average wall thickness, and when average wall thickness during less than 4mm, deviation should be less than 0.8mm.
6) finished product aluminum liner length tolerance is ± 15mm.
12, the mechanical property after the heat treatment of finished product aluminum liner is with reference to following table.
Above result shows: the inventive method adopts the last 450 to revolve spinning of attenuate machine with the thickness of pipe wall attenuate more than 60%; Carry out the production technology of seal head molding again with 412 spinning closing-in machines; Produce the high-quality, major diameter, the small walled that meet the demands, weight capacity ratio little (weight/volume), high, the measured aluminum liner that is used for vehicular composite cylinder of surfaces externally and internally matter of geometric accuracy, method technology is simple, cost is low; Output is big, is fit to big commercial production.
The above is merely a kind of embodiment of the present invention, and unrestricted protection scope of the present invention.Adopt the aluminum liner of the vehicular composite cylinder of this method making to have quality height, big, the small walled of aluminum liner diameter; Weight capacity ratio (weight/volume) is little, geometric accuracy is high, the surfaces externally and internally quality is good, technology is simple, cost is low; Output is big; Be fit to plurality of advantages such as big commercial production, so have good prospects for application and market prospects.
Every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention above scheme being done that does not break away from technical scheme of the present invention all still belongs within the protection domain of the present invention.
Claims (8)
1. the manufacturing approach of an aluminum liner of vehicular composite cylinder; Comprise: the aluminium alloy seamless pipe; The last 450 revolved attenuate machine, 412 spinning closing-in machines, carbide alloy band saw and Digit Control Machine Tool, it is characterized in that: method and the step of making aluminum liner of vehicular composite cylinder (4) are following:
1., selection
Choose suitable aluminium alloy seamless pipe raw material as base material according to product design, and by its surface quality of standard test, diameter and wall thickness,
2., blanking
According to the aluminium alloy seamless pipe of designing requirement sawing Len req,
3., attenuate is revolved at qualified aluminium alloy seamless pipe middle part by force, form aluminum liner thin-wall barrel (1), the wall thickness in each 200mm scope of aluminium alloy seamless pipe two ends is attenuate not, and the aluminium alloy seamless pipe that revolves by force behind the attenuate becomes bottle base,
4., use the carbide alloy band saw with bottle base two ends Qi Kou,
5., clean the inside and outside surface of bottle base after neat mouthful,
6., to the bottle base after cleaning by the detection of only carrying out ultrasonic inspection and outward appearance,
7., each 200mm scope internal rolling closing in formation end socket gradual change thickens position (2) and oral area (3) at the bottle base two ends respectively to adopt 412 spinning closing-in machines; Said aluminum liner thin-wall barrel (1) and said end socket gradual change thicken the semi-finished product that position (2) and oral area (3) form said aluminum liner of vehicular composite cylinder (4)
8., the semi-finished product integral body of the said aluminum liner of vehicular composite cylinder (4) behind the spinning closing-in of above-mentioned two ends is carried out T6 heat treatment,
9.. after the said oral area (3) at said aluminum liner of vehicular composite cylinder (4) the semi-finished product two ends after adopting Digit Control Machine Tool to above-mentioned heat treatment carries out the processing of connecting thread respectively, promptly form said aluminum liner of vehicular composite cylinder (4) finished product,
10., said aluminum liner of vehicular composite cylinder (4) finished product is carried out cleaning, drying and carries out product inspection by product standard.
2. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1; It is characterized in that: the method for qualified aluminium alloy seamless Guan Qiang being revolved attenuate is: what selected the last 450 revolved the attenuate machine revolves movement mould size by force; Mandrel surface is cleaned out; Adopt the last 450 to revolve the attenuate machine attenuate is revolved at above-mentioned qualified aluminium alloy seamless pipe material middle part by force, make the aluminium alloy seamless thickness of pipe wall reach the requirement of aluminum liner barrel designs, form said aluminum liner thin-wall barrel (1); Wall thickness in each 200mm scope of aluminium alloy seamless pipe two ends is attenuate not, and the aluminium alloy seamless pipe that revolves by force behind the attenuate becomes bottle base.
3. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1; It is characterized in that: the method for cleaning the inside and outside surface of the bottle base after neat mouthful is: jet cleaning is carried out on the inside and outside surface of bottle base with behind the hot water alignment mouth; Water temperature is 80 ℃; Scavenging period is 3 minutes, makes the inside and outside surperficial free from admixture, the oil stain that clean the back bottle base.
4. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1 is characterized in that: to the bottle base after cleaning by the following detection of only carrying out ultrasonic inspection and outward appearance:
1., the size Control scope of the said aluminum liner thin-wall barrel (1) at bottle base middle part is: the wall thickness tolerance that revolves the said aluminum liner thin-wall barrel (1) of the strong supination of attenuate machine through the last 450 is 5%, and extreme difference is 0.4mm,
2., surface quality detects: the surfaces externally and internally of said aluminum liner thin-wall barrel (1) should not have impression, overlapping, projection, crackle and is mingled with, and the actual wall thickness of removing the said aluminum liner thin-wall barrel (1) after the above-mentioned shortcoming must not be less than design wall thickness.
5. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1; It is characterized in that: spinning closing-in forms the method that the half-finished end socket gradual change of said aluminum liner of vehicular composite cylinder (4) thickens position (2) and is: the mode of texturing that adopts small deformation amount multi-pass through 412 spinning closing-in machines; Make the wall thickness in end socket centre reach 4 times of said aluminum liner thin-wall barrel (1) design wall thickness, and realize the progressive thickness rounding off.
6. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1 is characterized in that: it is following that said aluminum liner of vehicular composite cylinder (4) the semi-finished product integral body behind the spinning closing-in is carried out the T6 heat-treating methods:
1., to the semi-finished product heating-up temperature of above-mentioned aluminum liner (4) 515-575 ℃ the time, be incubated the quenching of coming out of the stove after 120-130 minute, carry out molten admittedly the processing, quenching technical is with adding 20% ployalkylene glycol polymer as hardening media in oil or the water,
2., the semi-finished product of above-mentioned aluminum liner (4) are carried out Ageing Treatment, the timeliness heating-up temperature is in the time of 170-180 ℃, and temperature retention time is 300-310 minute, and cool off in air naturally the semi-finished product of said aluminum liner of vehicular composite cylinder (4) back of coming out of the stove.
7. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1; It is characterized in that: after adopting Digit Control Machine Tool that the half-finished said oral area (3) of said aluminum liner of vehicular composite cylinder (4) is carried out connecting thread processing; Form the finished product of said aluminum liner of vehicular composite cylinder (4); This connecting thread should be the straight thread that connects fully; Thread size and tolerance meet the requirement of GB/T 196 and GB/T 197, tooth form should be set one's teeth on edge, flat at the bottom of the flat tooth, tooth two-wire, tooth, cusp, tooth is wealthy and thread surface on significantly ripple and burr.
8. the manufacturing approach of a kind of aluminum liner of vehicular composite cylinder as claimed in claim 1; It is characterized in that: the method for said aluminum liner of vehicular composite cylinder (4) being carried out cleaning, drying is: with hot water jet cleaning is carried out on the inside and outside surface of said aluminum liner of vehicular composite cylinder (4); Water temperature is 80 ℃; Scavenging period is 3 minutes, dries up the surface with compressed air then.
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