CN106623580A - Method for manufacturing bathroom water faucet branch pipe by compounding hot extrusion with superplastic bulging - Google Patents
Method for manufacturing bathroom water faucet branch pipe by compounding hot extrusion with superplastic bulging Download PDFInfo
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- CN106623580A CN106623580A CN201710016273.9A CN201710016273A CN106623580A CN 106623580 A CN106623580 A CN 106623580A CN 201710016273 A CN201710016273 A CN 201710016273A CN 106623580 A CN106623580 A CN 106623580A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a method for manufacturing a bathroom water faucet branch pipe by compounding hot extrusion with superplastic bulging and relates to a manufacturing method of a bathroom water faucet branch pipe. The invention aims at solving the problems that energy consumption is high, sand mould solid waste and waste gas are easily produced and an appearance microstructure is difficult to form in existing casting forming of a bathroom water faucet made from copper alloy and zinc-aluminum alloy. The method provided by the invention comprises the following steps: firstly, carrying out mechanical cutting; secondly, carrying out heat treatment; thirdly, heating a mould and applying pressure; fourthly, applying pressure to a left pressing head and a right pressing head; fifthly, lowering pressures of the left pressing head and the right pressing head; sixthly, increasing the temperature of the mould, and introducing gas into a pipe billet; and seventhly, taking out a formed part, and removing an oxidation film, so as to obtain the bathroom water faucet branch pipe manufactured by compounding hot extrusion with superplastic bulging. The method provided by the invention solves the problem that the thickness is reduced as single superplastic forming is excessive, also solves the problem that single hot extrusion cannot form the appearance microstructure and is a brand new green manufacturing technology. By adopting the method provided by the invention, the bathroom water faucet branch pipe can be obtained.
Description
Technical field
The present invention relates to a kind of manufacture method of bathroom faucet arm.
Background technology
At present, bathroom faucet material includes allumen, copper alloy, cast iron etc., wherein with allumen and copper alloy
Usage frequency is higher, and titanium alloy also has potential due to its excellent corrosion-resistant and biocompatibility, on bathroom faucet
Advantage.However, the bathroom faucet manufacturing process of above material depends on casting, it is commonly known that bathroom faucet casts
Flow process is complicated, and technical process is more, and main technical process includes that pressure wax, sand mold are manufactured, poured into a mould, going cast gate, shake shell, polishing etc.,
Complex procedures often lead to higher defect rate, and the component higher to outward appearance flatness requirement is especially prominent, in addition casting process
Sand solid waste can be produced and gas is useless, so being badly in need of seeking a kind of brand-new manufacturing technology to replace or make up conventional cast skill
Art.
The content of the invention
The invention aims to solve the existing bathroom faucet cast form with copper alloy, allumen as material
In there is high energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there is outward appearance fine structure forming difficulty, and provides
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet arm.
A kind of hot extrusion and the method for expansive forming composite manufacturing bathroom faucet arm, are specifically realized by the following steps
's：
First, machine cuts：Extruding tubing is cut out, the extruding tubing cut out is obtained；
2nd, it is heat-treated：The outer surface spraying antioxidant of the extruding tubing to cutting out；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in heat treatment 1h～6h in the Muffle furnace that temperature is 200 DEG C～800 DEG C, then along with the furnace cooling, obtains hot place
Pipe after reason；
3rd, install a mold into first on superplastic forming machine, then by the pipe after heat treatment be placed in upper die and lower die it
Between cylindrical cavity in, then pipe both sides that left pressure head and right pressure head are placed in cylindrical cavity after heat treatment；By mould
Temperature be warming up to 300 DEG C～800 DEG C, applied to upper mould that temperature is 300 DEG C～800 DEG C by the hydraulic cylinder of superplastic forming machine
Constant pressure is keeping the relative position of upper die and lower die constant；
Applying pressure described in step 3 is 11MPa～20MPa；
4th, gas is passed through in the pipe after the air inlet pipe heat treated of right pressure head, in making the pipe after heat treatment
Gas pressure is controlled in 2MPa～30MPa, then the gas pressure in pipe after heat treatment is 2MPa～30MPa and mould temperature
Spend and apply identical lateral pressure to distinguish pressure head to the left and right pressure head under conditions of 300 DEG C～800 DEG C；
Lateral pressure described in step 4 is 1mm/s for the velocity of displacement of 20MPa～30MPa, left pressure head and right pressure head
～20mm/s；
5th, when the pipe after heat treatment is full of blind hole, the lateral pressure of left pressure head and right pressure head, lateral pressure drop are reduced
To the 60%～80% of original pressure, the velocity of displacement of left pressure head and right pressure head is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mould is increased to into 400 DEG C～950 DEG C, then in the case where mold temperature is for 400 DEG C～950 DEG C by the right side
Gas is passed through in pipe after the air inlet pipe heat treated of pressure head, the gas pressure in the pipe after heat treatment is controlled in 1MPa
～8MPa, and heat-insulation pressure keeping 5min～10min；
7th, profiled member is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtain bathroom faucet arm.
The principle and advantage of the present invention：
First, the method for a kind of hot extrusion proposed by the invention and expansive forming composite manufacturing bathroom faucet arm, it is former
Material is technique tubing, and forming process can significantly reduce energy consumption, while cast gate, running channel etc. will not be produced, carry without the need for metal melt
The high utilization rate of material；In addition forming technology link is reduced to two, i.e. hot extrusion and expansive forming, can effectively ensure that product
Yields, by hot extrusion in combination with superplastic forming, that is, solves the problems, such as single superplastic forming excessive thinning, solves again single
Hot extrusion cannot shape a difficult problem for outside fine structure, be a kind of brand-new green manufacture technology；
2nd, the present invention is solved in the existing bathroom faucet cast form with copper alloy, allumen as material and existed
High energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there is outward appearance fine structure forming difficulty.
The present invention can obtain bathroom faucet arm.
Description of the drawings
Fig. 1 is the structural representation of the mould described in specific embodiment one；
Fig. 2 is the B-B direction sectional view of Fig. 1；
Fig. 3 is the A-A of Fig. 1 to sectional view；
Fig. 4 is the D-D of Fig. 1 to sectional view；
Fig. 5 shows for the process that gas is passed through in the pipe after the heat treated described in step 4 in specific embodiment one
It is intended to；
Fig. 6 is the forming process schematic diagram in specific embodiment one described in step 6.
Specific embodiment
Specific embodiment one：Present embodiment is a kind of hot extrusion and expansive forming composite manufacturing bathroom faucet arm
Method, be specifically realized by the following steps：
First, machine cuts：Extruding tubing is cut out, the extruding tubing cut out is obtained；
2nd, it is heat-treated：The outer surface spraying antioxidant of the extruding tubing to cutting out；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in heat treatment 1h～6h in the Muffle furnace that temperature is 200 DEG C～800 DEG C, then along with the furnace cooling, obtains hot place
Pipe after reason；
3rd, install a mold into first on superplastic forming machine, then the pipe after heat treatment is placed in into upper mould 1 and lower mould 2
Between cylindrical cavity in, then pipe both sides that left pressure head 3 and right pressure head 4 are placed in cylindrical cavity after heat treatment；Will
The temperature of mould is warming up to 300 DEG C～800 DEG C, by the hydraulic cylinder of superplastic forming machine to the upper mould that temperature is 300 DEG C～800 DEG C
1 applies constant pressure to keep the relative position of upper mould 1 and lower mould 2 constant；
Applying pressure described in step 3 is 11MPa～20MPa；
4th, gas is passed through in the pipe after the air inlet pipe heat treated of right pressure head 4, in making the pipe after heat treatment
Gas pressure is controlled in 2MPa～30MPa, then the gas pressure in pipe after heat treatment is 2MPa～30MPa and mould temperature
Spend and apply identical lateral pressure to distinguish pressure head 3 to the left and right pressure head 4 under conditions of 300 DEG C～800 DEG C；
Lateral pressure described in step 4 is 1mm/ for the velocity of displacement of 20MPa～30MPa, left pressure head 3 and right pressure head 4
S～20mm/s；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4, lateral pressure are reduced
Power is down to the velocity of displacement of the 60%～80% of original pressure, left pressure head 3 and right pressure head 4 and is down to 0mm/s, then stops heat treated
Gas is passed through in pipe afterwards；
6th, the temperature of mould is increased to into 400 DEG C～950 DEG C, then in the case where mold temperature is for 400 DEG C～950 DEG C by the right side
Gas is passed through in pipe after the air inlet pipe heat treated of pressure head 4, the gas pressure in the pipe after heat treatment is controlled
1MPa～8MPa, and heat-insulation pressure keeping 5min～10min；
7th, profiled member is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtain bathroom faucet arm.
The temperature of mould is warming up to into 300 DEG C～800 DEG C in present embodiment step 3, is to reach the hot extrusion of pipe
Pressure temperature, when extrude tubing be allumen when mould temperature be warming up to 300 DEG C～350 DEG C, when extruding tubing be brass or
The temperature of mould is warming up to 350 DEG C～600 DEG C during red copper, and when it is pure titanium or titanium alloy to extrude tubing, the temperature of mould heats up
To 500 DEG C～800 DEG C；
Gas is passed through in pipe in present embodiment step 4 after the air inlet pipe heat treated of right pressure head 4, heat is made
Gas pressure control in pipe after process is in 2MPa～30MPa, when pipe is allumen, the gas pressure in pipe
In 2MPa～15MPa, when pipe is brass or red copper, the gas pressure in pipe is controlled in 5MPa～20MPa, works as pipe for control
When base is pure titanium or titanium alloy, the gas pressure in pipe is controlled in 10MPa～30MPa；
The temperature of mould is increased to into 400 DEG C～950 DEG C in present embodiment step 6, is to reach the super modeling of pipe
Forming temperature, and then the purpose of the local fine structures such as corner angle, picture on surface is formed on bathroom faucet arm；When pipe is
During allumen, the temperature of mould is increased to 400 DEG C～550 DEG C, and when pipe is brass or red copper, the temperature of mould is increased to
550 DEG C～800 DEG C, when pipe be pure titanium or titanium alloy constantly, the temperature of mould is increased to 800 DEG C～950 DEG C.
Fig. 1 is the structural representation of the mould described in specific embodiment one, and 1 is upper mould in Fig. 1, and 2 is lower mould, and 3 are a left side
Pressure head, 4 is right pressure head, and 5 is upper groove, and 6 is low groove, and 7 is blind hole；
Fig. 2 is the B-B direction sectional view of Fig. 1, and 7 is blind hole in Fig. 2；
Fig. 3 is the A-A of Fig. 1 to sectional view；
Fig. 4 is the D-D of Fig. 1 to sectional view；
Fig. 5 shows for the process that gas is passed through in the pipe after the heat treated described in step 4 in specific embodiment one
It is intended to, 7 is blind hole in Fig. 5, and 8 are the pipe after heat treatment；
Fig. 6 is the forming process schematic diagram in specific embodiment one described in step 6, and 9 is bathroom faucet in Fig. 6
Arm.
The principle and advantage of present embodiment：
First, present embodiment is proposed a kind of hot extrusion and the side of expansive forming composite manufacturing bathroom faucet arm
Method, raw material are technique tubing, and forming process can significantly reduce energy consumption without the need for metal melt, while cast gate, running channel will not be produced
Deng improve the utilization rate of material；In addition forming technology link is reduced to two, i.e. hot extrusion and expansive forming, can effectively protect
Card product yield, by hot extrusion in combination with superplastic forming, that is, solves the problems, such as single superplastic forming excessive thinning, solves again
Single hot extrusion cannot shape a difficult problem for outside fine structure, be a kind of brand-new green manufacture technology；
2nd, present embodiment is solved in the existing bathroom faucet cast form with copper alloy, allumen as material
There is high energy consumption, it is gentle useless to be also easy to produce sand mold solid waste, while also there is outward appearance fine structure forming difficulty.
Present embodiment can obtain bathroom faucet arm.
Specific embodiment two：Present embodiment is with the difference of specific embodiment one：Mould described in step 3
Including upper mould 1, lower mould 2, left pressure head 3 and right pressure head 4；The lower surface of upper mould 1 is provided with semicircle upper groove 5, the openings of upper groove 5
To downward；The blind hole 7 vertical with the upper surface of upper mould 1 is provided between the arcwall face of upper groove 5 and the upper surface of upper mould 1, blind hole 7
Opening direction is towards lower mould 2；The lower upper surface of mould 2 is provided with the low groove 6 equivalently-sized with semicircle upper groove 5, low groove 6
Opening direction is upwards；Low groove 6 is encircled into cylindrical cavity with upper groove 5；
Described left pressure head 3 is cylinder；The left part of right pressure head 4 is cylinder, and right part is air inlet pipe；The left part of right pressure head 4
The air admission hole that its center is provided through, air admission hole is connected with air inlet pipe；Described left pressure head 3 and right pressure head 4 is placed in
In cylindrical cavity between upper mould 1 and lower mould 2.Other steps are identical with specific embodiment one.
Specific embodiment three：Present embodiment is with the difference of specific embodiment one or one of two：Institute in step 2
The antioxidant stated is the boron nitride aqueous solution that mass fraction is 5%～15% or the zirconium oxide that mass fraction is 6%～20%
The aqueous solution.Other steps are identical with specific embodiment one or two.
Specific embodiment four：One of present embodiment and specific embodiment one to three difference is：Institute in step one
The extruding tubing stated is allumen, brass, red copper, pure titanium or titanium alloy.Other steps are with specific embodiment one to three-phase
Together.
Specific embodiment five：One of present embodiment and specific embodiment one to four difference is：Described zinc-aluminium
Alloy is ZnAl22；Described brass is H59 or H62；Described titanium alloy is TA1, TA2, TC1 or TC4.Other steps and tool
Body embodiment one to four is identical.
Specific embodiment six：One of present embodiment and specific embodiment one to five difference is：Institute in step 4
The gas stated is argon gas or nitrogen.Other steps are identical with specific embodiment one to five.
Specific embodiment seven：One of present embodiment and specific embodiment one to six difference is：Institute in step 6
The gas stated is argon gas or nitrogen.Other steps are identical with specific embodiment one to six.
Specific embodiment eight：One of present embodiment and specific embodiment one to seven difference is：It is right in step 2
The outer surface spraying antioxidant of the extruding tubing cut out；Again the extruding tubing that outer surface is coated with antioxidant is placed in into temperature
To be heat-treated 3h～6h, then along with the furnace cooling, the pipe after being heat-treated in 600 DEG C～800 DEG C of Muffle furnaces.Other steps with
Specific embodiment one to seven is identical.
Specific embodiment nine：One of present embodiment and specific embodiment one to eight difference is：Will in step 6
The temperature of mould is increased to 550 DEG C～800 DEG C, then is by the air inlet pipe of right pressure head 4 at 550 DEG C～800 DEG C in mold temperature
Gas is passed through in pipe after heat treated, the gas pressure in the pipe after heat treatment is controlled in 4MPa～6MPa, and protected
Warm pressurize 5min～10min.Other steps are identical with specific embodiment one to eight.
Specific embodiment ten：One of present embodiment and specific embodiment one to nine difference is：In step 5 when
When pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4 is reduced, lateral pressure is down to original pressure
70%, the velocity of displacement of left pressure head 3 and right pressure head 4 is down to 0mm/s, then stops being passed through gas in the pipe after heat treated.
Other steps are identical with specific embodiment one to nine.
Specific embodiment 11：One of present embodiment and specific embodiment one to ten difference is：In step 2
The outer surface spraying antioxidant of the extruding tubing to cutting out；Again the extruding tubing that outer surface is coated with antioxidant is placed in into temperature
Spend in the Muffle furnace for 260 DEG C and be heat-treated 2.5h, then along with the furnace cooling, the pipe after being heat-treated.Other steps and concrete reality
Apply mode one to ten identical.
Specific embodiment 12：Present embodiment is with the difference of specific embodiment one to one of 11：Step 3
Described in applying pressure be 11MPa.Other steps are identical with specific embodiment one to 11.
Specific embodiment 13：Present embodiment is with the difference of specific embodiment one to one of 12：Step 4
Described in lateral pressure be 24MPa.Other steps are identical with specific embodiment one to 12.
Beneficial effects of the present invention are verified using following examples：
A kind of method of embodiment one, hot extrusion and expansive forming composite manufacturing bathroom faucet arm, specifically by with
What lower step was completed：
First, machine cuts：Extruding tubing is cut out, the extruding tubing cut out is obtained；
Extruding tubing described in step one is brass；Described brass is H62；
2nd, it is heat-treated：The outer surface spraying antioxidant of the extruding tubing to cutting out；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in the Muffle furnace that temperature is 550 DEG C and is heat-treated 3h, then along with the furnace cooling, the pipe after being heat-treated；
Antioxidant described in step 2 is oxidation aqueous zirconium that mass fraction is 10%；
3rd, install a mold into first on superplastic forming machine, then the pipe after heat treatment is placed in into upper mould 1 and lower mould 2
Between cylindrical cavity in, then pipe both sides that left pressure head 3 and right pressure head 4 are placed in cylindrical cavity after heat treatment；Will
The temperature of mould is warming up to 600 DEG C, and constant pressure is applied to the upper mould 1 that temperature is 600 DEG C by the hydraulic cylinder of superplastic forming machine
To keep the relative position of upper mould 1 and lower mould 2 constant；
Applying pressure described in step 3 is 15MPa；
4th, gas is passed through in the pipe after the air inlet pipe heat treated of right pressure head 4, in making the pipe after heat treatment
Gas pressure is controlled in 10MPa, then the gas pressure in pipe after heat treatment is 10MPa and mold temperature is 600 DEG C
Under the conditions of respectively to the left pressure head 3 and right pressure head 4 apply identical lateral pressure；
Lateral pressure described in step 4 is 10mm/s for the velocity of displacement of 25MPa, left pressure head 3 and right pressure head 4；
Gas described in step 4 is nitrogen；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4, lateral pressure are reduced
Power is down to the velocity of displacement of the 70% of original pressure, left pressure head 3 and right pressure head 4 and is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mould is increased to into 800 DEG C, then mold temperature be at 800 DEG C by the air inlet pipe of right pressure head 4 to
Gas is passed through in pipe after heat treatment, the gas pressure in the pipe after heat treatment is controlled in 4MPa, and heat-insulation pressure keeping
10min；
Gas described in step 6 is nitrogen；
7th, profiled member is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtain bathroom faucet arm；
Mould described in step 3 includes upper mould 1, lower mould 2, left pressure head 3 and right pressure head 4；The lower surface of upper mould 1 is provided with
Semicircle upper groove 5, the opening direction of upper groove 5 is downward；Fovea superior is provided between the arcwall face of upper groove 5 and the upper surface of upper mould 1
The vertical blind hole 7 of groove 5；The lower upper surface of mould 2 is provided with the low groove 6 equivalently-sized with semicircle upper groove 5, and low groove 6 is opened
Mouth direction is upwards；Low groove 6 is encircled into cylindrical cavity with upper groove 5；Described left pressure head 3 is cylinder；The left part of right pressure head 4
For cylinder, right part is air inlet pipe；The air admission hole that its center of the left part of right pressure head 4 is provided through, air admission hole and air inlet
Pipe is connected；In the cylindrical cavity that described left pressure head 3 and right pressure head 4 is placed between mould 1 and lower mould 2.
The advantage of embodiment one：
First, elongation percentage of material is big under superplastic state, and brass can be more than 300%, so more traditional bulging, bulging number of times
Can significantly reduce, usual 1 passage bulging can obtain required outer shape, cost is reduced；
2nd, material resistance of deformation is significantly reduced under superplastic state, therefore the limitation to product thickness is significantly reduced, while outward
The fine structures such as portion's corner angle are more easy to realize that product scope is widened.
3rd, superplastic forming internal pressure is significantly reduced, therefore equipment mold clamping force, side potting strength are substantially reduced, big to shaping
Sized products advantage is more notable, and equipment investment is reduced.
A kind of method of embodiment two, hot extrusion and expansive forming composite manufacturing bathroom faucet arm, specifically by with
What lower step was completed：
First, machine cuts：Extruding tubing is cut out, the extruding tubing cut out is obtained；
Extruding tubing described in step one is titanium alloy；Described titanium alloy is TC4；
2nd, it is heat-treated：The outer surface spraying antioxidant of the extruding tubing to cutting out；Outer surface is coated with again anti-oxidation
The extruding tubing of agent is placed in the Muffle furnace that temperature is 700 DEG C and is heat-treated 4h, then along with the furnace cooling, the pipe after being heat-treated；
Antioxidant described in step 2 is oxidation aqueous zirconium that mass fraction is 12%；
3rd, install a mold into first on superplastic forming machine, then the pipe after heat treatment is placed in into upper mould 1 and lower mould 2
Between cylindrical cavity in, then pipe both sides that left pressure head 3 and right pressure head 4 are placed in cylindrical cavity after heat treatment；Will
The temperature of mould is warming up to 700 DEG C, and constant pressure is applied to the upper mould 1 that temperature is 700 DEG C by the hydraulic cylinder of superplastic forming machine
To keep the relative position of upper mould 1 and lower mould 2 constant；
Applying pressure described in step 3 is 19MPa；
4th, gas is passed through in the pipe after the air inlet pipe heat treated of right pressure head 4, in making the pipe after heat treatment
Gas pressure is controlled in 20MPa, then the gas pressure in pipe after heat treatment is 20MPa and mold temperature is 700 DEG C
Under the conditions of respectively to the left pressure head 3 and right pressure head 4 apply identical lateral pressure；
Gas described in step 4 is nitrogen；
Lateral pressure described in step 4 is 20mm/s for the velocity of displacement of 30MPa, left pressure head 3 and right pressure head 4；
5th, when the pipe after heat treatment is full of blind hole 7, the lateral pressure of left pressure head 3 and right pressure head 4, lateral pressure are reduced
Power is down to the velocity of displacement of the 75% of original pressure, left pressure head 3 and right pressure head 4 and is down to 0mm/s, then stops the pipe after heat treated
Gas is passed through in base；
6th, the temperature of mould is increased to into 920 DEG C, then mold temperature be at 920 DEG C by the air inlet pipe of right pressure head 4 to
Gas is passed through in pipe after heat treatment, the gas pressure in the pipe after heat treatment is controlled in 6MPa, and heat-insulation pressure keeping
10min；
Gas described in step 6 is nitrogen；
7th, profiled member is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtain bathroom faucet arm；
Mould described in step 3 includes upper mould 1, lower mould 2, left pressure head 3 and right pressure head 4；The lower surface of upper mould 1 is provided with
Semicircle upper groove 5, the opening direction of upper groove 5 is downward；Fovea superior is provided between the arcwall face of upper groove 5 and the upper surface of upper mould 1
The vertical blind hole 7 of groove 5；The lower upper surface of mould 2 is provided with the low groove 6 equivalently-sized with semicircle upper groove 5, and low groove 6 is opened
Mouth direction is upwards；Low groove 6 is encircled into cylindrical cavity with upper groove 5；Described left pressure head 3 is cylinder；The left part of right pressure head 4
For cylinder, right part is air inlet pipe；The air admission hole that its center of the left part of right pressure head 4 is provided through, air admission hole and air inlet
Pipe is connected；In the cylindrical cavity that described left pressure head 3 and right pressure head 4 is placed between mould 1 and lower mould 2.
The advantage of embodiment two：
First, elongation percentage of material is big under superplastic state, and titanium alloy can be more than 400%, so more traditional bulging, bulging
Number can be significantly reduced, and usual 1 passage bulging can obtain required outer shape, and cost is reduced；
2nd, material resistance of deformation is significantly reduced under superplastic state, therefore the limitation to product thickness is significantly reduced, while outward
The fine structures such as portion's corner angle are more easy to realize that product scope is widened.
3rd, superplastic forming internal pressure is significantly reduced, therefore equipment mold clamping force, side potting strength are substantially reduced, big to shaping
Sized products advantage is more notable, and equipment investment is reduced.
Claims (10)
1. a kind of method of hot extrusion and expansive forming composite manufacturing bathroom faucet arm, it is characterised in that the method is specifically
Complete according to the following steps：
First, machine cuts：Extruding tubing is cut out, the extruding tubing cut out is obtained；
2nd, it is heat-treated：The outer surface spraying antioxidant of the extruding tubing to cutting out；Again outer surface is coated with into antioxidant
Extruding tubing is placed in heat treatment 1h～6h in the Muffle furnace that temperature is 200 DEG C～800 DEG C, then along with the furnace cooling, after being heat-treated
Pipe；
3rd, install a mold into first on superplastic forming machine, then the pipe after heat treatment is placed in into upper mould (1) and lower mould (2)
Between cylindrical cavity in, then the pipe two that left pressure head (3) and right pressure head (4) are placed in cylindrical cavity after heat treatment
Side；The temperature of mould is warming up to into 300 DEG C～800 DEG C, by the hydraulic cylinder of superplastic forming machine to temperature be 300 DEG C～800 DEG C
Upper mould (1) apply constant pressure keeping the relative position of upper mould (1) and lower mould (2) constant；
Applying pressure described in step 3 is 11MPa～20MPa；
4th, gas is passed through in the pipe after the air inlet pipe heat treated of right pressure head (4), makes the gas in the pipe after heat treatment
Body Stress control is in 2MPa～30MPa, then the gas pressure in pipe after heat treatment is 2MPa～30MPa and mold temperature
Apply identical lateral pressure to distinguish pressure head (3) to the left and right pressure head (4) under conditions of 300 DEG C～800 DEG C；
Lateral pressure described in step 4 is 1mm/ for the velocity of displacement of 20MPa～30MPa, left pressure head (3) and right pressure head (4)
S～20mm/s；
5th, when the pipe after heat treatment is full of blind hole (7), the lateral pressure of left pressure head (3) and right pressure head (4) is reduced, laterally
Pressure is down to the velocity of displacement of the 60%～80% of original pressure, left pressure head (3) and right pressure head (4) and is down to 0mm/s, then stop to
Gas is passed through in pipe after heat treatment；
6th, the temperature of mould is increased to into 400 DEG C～950 DEG C, then passes through right pressure head in the case where mold temperature is for 400 DEG C～950 DEG C
(4) gas is passed through in the pipe after air inlet pipe heat treated, the gas pressure in the pipe after heat treatment is controlled in 1MPa
～8MPa, and heat-insulation pressure keeping 5min～10min；
7th, profiled member is taken out, then the oxide-film of surface of shaped parts is removed by abrasive band, obtain bathroom faucet arm.
2. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by that the mould described in step 3 includes upper mould (1), lower mould (2), left pressure head (3) and right pressure head (4)；Under upper mould (1)
Surface is provided with semicircle upper groove (5), and upper groove (5) opening direction is downward；On the arcwall face of upper groove (5) and upper mould (1)
It is provided with the blind hole (7) vertical with upper mould (1) upper surface between surface, the opening direction of blind hole (7) is towards lower mould (2)；Lower mould
(2) upper surface is provided with the low groove (6) equivalently-sized with semicircle upper groove (5), and the opening direction of low groove (6) is upwards；
Low groove (6) is encircled into cylindrical cavity with upper groove (5)；
Described left pressure head (3) is cylinder；Right pressure head (4) left part is cylinder, and right part is air inlet pipe；Right pressure head (4) left part
The air admission hole that is provided through of its center, air admission hole is connected with air inlet pipe；Described left pressure head (3) and right pressure head
(4) in the cylindrical cavity being placed between mould (1) and lower mould (2).
3. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by antioxidant described in step 2 and is that the boron nitride aqueous solution that mass fraction is 5%～15% or mass fraction are
6%～20% oxidation aqueous zirconium.
4. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by that the extruding tubing described in step one is allumen, brass, red copper, pure titanium or titanium alloy.
5. the method for a kind of hot extrusion according to claim 4 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by that described allumen is ZnAl22；Described brass is H59 or H62；Described titanium alloy is TA1, TA2, TC1
Or TC4.
6. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by that the gas described in step 4 is argon gas or nitrogen.
7. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by that the gas described in step 6 is argon gas or nitrogen.
8. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
The outer surface spraying antioxidant of the extruding tubing to cutting out is characterised by step 2；Again outer surface is coated with into antioxidant
Extruding tubing be placed in the Muffle furnace that temperature is 600 DEG C～800 DEG C heat treatment 3h～6h, then along with the furnace cooling, be heat-treated
Pipe afterwards.
9. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by step 6 for the temperature of mould being increased to 550 DEG C～800 DEG C, then leads in the case where mold temperature is for 550 DEG C～800 DEG C
Gas is passed through in the pipe crossed after the air inlet pipe heat treated of right pressure head (4), the gas pressure control in the pipe after heat treatment is made
System is in 4MPa～6MPa, and heat-insulation pressure keeping 5min～10min.
10. the method for a kind of hot extrusion according to claim 1 and expansive forming composite manufacturing bathroom faucet arm, its
It is characterised by step 5, when the pipe after heat treatment is full of blind hole (7), reducing the lateral of left pressure head (3) and right pressure head (4)
Pressure, lateral pressure is down to the velocity of displacement of the 70% of original pressure, left pressure head (3) and right pressure head (4) and is down to 0mm/s, then is stopped
Only it is passed through gas in the pipe after heat treated.
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