CN107747583A - A kind of production technology of corrosion resistant automobile using bolt - Google Patents
A kind of production technology of corrosion resistant automobile using bolt Download PDFInfo
- Publication number
- CN107747583A CN107747583A CN201710937449.4A CN201710937449A CN107747583A CN 107747583 A CN107747583 A CN 107747583A CN 201710937449 A CN201710937449 A CN 201710937449A CN 107747583 A CN107747583 A CN 107747583A
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- Prior art keywords
- bolt
- cooled
- corrosion resistant
- resistant automobile
- threading
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- 238000005260 corrosion Methods 0.000 title claims abstract description 26
- 230000007797 corrosion Effects 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 238000005554 pickling Methods 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- 238000005496 tempering Methods 0.000 claims description 25
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 16
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 229910052684 Cerium Inorganic materials 0.000 claims description 8
- 229910052693 Europium Inorganic materials 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052765 Lutetium Inorganic materials 0.000 claims description 8
- 229910052779 Neodymium Inorganic materials 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052733 gallium Inorganic materials 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 229910052702 rhenium Inorganic materials 0.000 claims description 8
- 229910052718 tin Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a kind of production technology of corrosion resistant automobile using bolt, belongs to fastening or fixing component technical field.The production technology of the corrosion resistant automobile using bolt, comprises the following steps：(i) dispensing；(ii) cylindrical blank is prepared；(iii) cold-heading；(iv) threading；(v) bolt is heat-treated；(vi) pickling；(vii) bolt is put into electrolyte, is switched on power using bolt as anode and carry out anodic oxidation；(viii) clean and dry；(ix) pack.The production technology of the corrosion resistant automobile using bolt of the present invention carries out the anodized of step (vii) after step (vi) pickling, thoroughly removed by the dirt of pickling bolt, improve the effect of the anodized of next step, and anodized of the bolt by step (vii), substantially increase the decay resistance of itself, by the step (vi) combination with step (vii), the effect of the surface treatment to bolt is significantly improved, extends service life.
Description
Technical field
The present invention relates to a kind of production technology of corrosion resistant automobile using bolt, belongs to fastening or fixing component technology neck
Domain.
Background technology
Fastener is to fasten two or more parts（Or component）It is fastenedly connected used when turning into an entirety
The general name of a kind of machine components, it is widely used in various machineries, equipment, vehicle, ship, railway, bridge, building, structure, work
Above, its feature is that description is various, and performance purposes is different for tool, instrument, chemical industry, instrument and articles for use etc., and standardize,
Seriation, unitized degree are also high.
Bolt is a kind of the most frequently used fastening part, using object inclined-plane circular rotating and frictional force physics and
Mathematical principle, the instrument of incremental fastening implements parts；In the Assembling Production of automobile, bolt is also frequently used, special
Be not in enging cabin, for parts such as stationary engines, due in enging cabin in use often in the condition of high temperature,
Bolt is often subject to high temperature and moist overcast and rainy invasion and attack wherein, tends to be corroded and gets rusty.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing a kind of service life length, to be not easy rotten
The production technology of the corrosion resistant automobile using bolt of erosion.
The present invention is to solve the technical scheme that above-mentioned technical problem proposes to be：A kind of production of corrosion resistant automobile using bolt
Technique, comprise the following steps：
(i) dispensing：The mass percent of each composition is in the corrosion resistant automobile using bolt：C：0.01-0.02%, Fe:
1.16-1.33%,Zn:0.25-0.46%,Mn：0.37-0.54%, Cr：0.13-0.17%, Ni：0.55-0.66%, Mo：0.11-
0.22%, Ti：0.56-0.77%, Pd：0.13-0.18%,Pt：0.15-0.22%, Nd：0.14-0.32%,Ce：0.02-
0.08%,Eu：0.13-0.24%,Lu:0.11-0.27%, Ga：0.03-0.07%, Y：0.01-0.03%, Sn：0.66-0.71%,
Zr：0.02-0.05%, Re：0.01-0.03%, magnesia：0.11-0.13%, manganese dioxide：0.02-0.05%, surplus Al；
(ii) cylindrical blank is prepared：Using step, (i) metal wire rod is made by melting as raw material in middle dispensing, unidirectional by moveable scissor
Metal wire rod is blocked in movement, and cylindrical blank is made；
(iii) cold-heading：The cylindrical blank is subjected to cold-heading molding using cold-heading equipment, the screw head of bolt is formed by mould molding
And screw rod；
(iv) threading：Screw thread is rubbed on the screw rod of bolt using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed on the screw rod of screw using threading equipment；
B, second of threading, threading is carried out on the shallow thread on the screw rod of screw using threading equipment and deepens to rub final spiral shell
Line；
C, cleaning is deoiled；
(v) bolt is heat-treated, concrete technology is：
A, heat：Bolt is heated to 700-720 DEG C, and is incubated 1-3 hours；
B, cool down：Use the air-cooled cooldown rate with 5-8 DEG C/s to accelerate bolt after being cooled to 330-360 DEG C, then be air-cooled to room
Temperature；
C, once it is tempered：After bolt is heated into 650-670 DEG C of tempering 50-55min, warm 50-60s is treated, makes bolt temperature uniform
Change, accelerated afterwards with 10-12 DEG C/s cooldown rate after being cooled to 220-260 DEG C, then be air-cooled to room temperature；
D, double tempering：By once be tempered after bolt be heated to 550-580 DEG C tempering 60-75min, after be air-cooled to room temperature；
E, clean；
(vi) pickling：Bolt after tempering is placed in the hydrochloric acid that concentration is 10-15% and soaks 5-8min, clear water is cleaned, then is placed in dense
Spend to soak 10-12min in 1-2% phosphate solutions, finally cleaned with clear water；
(vii) bolt is put into electrolyte, is switched on power using bolt as anode and carry out anodic oxidation, the voltage of anodic oxidation is
500-600V, the electric current of anodic oxidation are 8 amperes/square decimeter, and the power supply is the pulse power, the frequency of the pulse power
For 1000 hertz, dutycycle 25%；
(viii) clean and dry；
(ix) pack.
The improvement of above-mentioned technical proposal is：Step (i) described in corrosion resistant automobile using bolt each composition quality percentage
Than for：C：0.01%, Fe:1.16%,Zn:0.25%,Mn：0.37%, Cr：0.13%, Ni：0.55%, Mo：0.11%, Ti：
0.56%, Pd：0.13%,Pt：0.15%, Nd：0.14%,Ce：0.02%,Eu：0.13%,Lu:0.11%, Ga：0.03%, Y：
0.01%, Sn：0.66%, Zr：0.02%, Re：0.01%, magnesia：0.11%, manganese dioxide：0.02%, surplus Al.
The improvement of above-mentioned technical proposal is：Step (i) described in corrosion resistant automobile using bolt each composition quality percentage
Than for：C：0.02%, Fe:1.33%,Zn:0.46%,Mn：0.54%, Cr：0.17%, Ni：0.66%, Mo：0.22%, Ti：
0.77%, Pd：0.18%,Pt：0.22%, Nd：0.32%,Ce：0.08%,Eu：0.24%,Lu:0.27%, Ga：0.07%, Y：
0.03%, Sn：0.71%, Zr：0.05%, Re：0.03%, magnesia：0.13%, manganese dioxide：0.05%, surplus Al.
The improvement of above-mentioned technical proposal is：(v) bolt is heat-treated by step, concrete technology is：
A, heat：Bolt is heated to 700 DEG C, and is incubated 2 hours；
B, cool down：Use the air-cooled cooldown rate with 6 DEG C/s to accelerate bolt after being cooled to 350 DEG C, then be air-cooled to room temperature；
C, once it is tempered：After bolt is heated into 660 DEG C of tempering 50min, warm 55s is treated, makes bolt equalizing temperature, afterwards with 12
DEG C/s cooldown rate accelerates after being cooled to 240 DEG C, then is air-cooled to room temperature；
D, double tempering：By once be tempered after bolt be heated to 560 DEG C tempering 65min, after be air-cooled to room temperature；
E, clean.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：
（1）The production technology of the corrosion resistant automobile using bolt of the present invention uses Al to pass through addition for primary raw material in dispensing
Other metals such as a variety of rare earth metals and Fe, Zn, Ti so that quality that bolt itself had not only mitigated but also have enough intensity and heat-resisting
Corrosive nature；
（2）The present invention corrosion resistant automobile using bolt production technology in threading using the method for multiple threading, in bolt
Screw thread process when it is incremental, the screw thread processed is more fine accurate；
（3）The production technology of the corrosion resistant automobile using bolt of the present invention passes through double tempering, first time when being heat-treated
Tempering can rotary austenite formed on lath circle or lath beam circle, and in insulating process further enrichment alloying element with
Improve stability；Ferrite lath beam is then replied in insulating process, while the harmful element in ferrite is also discharged to
In rotary austenite, so as to improve substrate performance；Second of tempering can make rotary austenite on the premise of proof strength
Be enriched with enough alloying elements, make few net carbide, be more uniformly distributed tissue, can holding structure it is stable, further increase
Strong contact fatigue strength and impact flexibility；
（4）The production technology of the corrosion resistant automobile using bolt of the present invention carries out the anodic oxidation of step (vii) after step (vi) pickling
Processing, is thoroughly removed by the dirt of pickling bolt, improves the effect of the anodized of next step, and bolt
By the anodized of step (vii), the decay resistance of itself is substantially increased, by the step (vi) combination with step (vii),
The significant effect for improving the surface treatment to bolt, extends service life.
Embodiment
Embodiment one
The production technology of the corrosion resistant automobile using bolt of the present embodiment, comprises the following steps：
(i) dispensing：The mass percent of each composition is in the corrosion resistant automobile using bolt：C：0.01%, Fe:1.16%,Zn:
0.25%,Mn：0.37%, Cr：0.13%, Ni：0.55%, Mo：0.11%, Ti：0.56%, Pd：0.13%,Pt：0.15%, Nd：
0.14%,Ce：0.02%,Eu：0.13%,Lu:0.11%, Ga：0.03%, Y：0.01%, Sn：0.66%, Zr：0.02%, Re：
0.01%, magnesia：0.11%, manganese dioxide：0.02%, surplus Al；
(ii) cylindrical blank is prepared：Using step, (i) metal wire rod is made by melting as raw material in middle dispensing, unidirectional by moveable scissor
Metal wire rod is blocked in movement, and cylindrical blank is made；
(iii) cold-heading：The cylindrical blank is subjected to cold-heading molding using cold-heading equipment, the screw head of bolt is formed by mould molding
And screw rod；
(iv) threading：Screw thread is rubbed on the screw rod of bolt using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed on the screw rod of screw using threading equipment；
B, second of threading, threading is carried out on the shallow thread on the screw rod of screw using threading equipment and deepens to rub final spiral shell
Line；
C, cleaning is deoiled；
(v) bolt is heat-treated, concrete technology is：
A, heat：Bolt is heated to 700 DEG C, and is incubated 2 hours；
B, cool down：Use the air-cooled cooldown rate with 6 DEG C/s to accelerate bolt after being cooled to 350 DEG C, then be air-cooled to room temperature；
C, once it is tempered：After bolt is heated into 660 DEG C of tempering 50min, warm 55s is treated, makes bolt equalizing temperature, afterwards with 12
DEG C/s cooldown rate accelerates after being cooled to 240 DEG C, then is air-cooled to room temperature；
D, double tempering：By once be tempered after bolt be heated to 560 DEG C tempering 65min, after be air-cooled to room temperature；
E, clean；
(vi) pickling：Bolt after tempering is placed in the hydrochloric acid that concentration is 12% and soaks 6min, clear water is cleaned, then is placed in concentration and is
10min is soaked in 2% phosphate solution, is finally cleaned with clear water；
(vii) bolt is put into electrolyte, is switched on power using bolt as anode and carry out anodic oxidation, the voltage of anodic oxidation is
500V, the electric current of anodic oxidation is 8 amperes/square decimeter, and the power supply is the pulse power, and the frequency of the pulse power is
1000 hertz, dutycycle 25%；
(viii) clean and dry；
(ix) pack.
Embodiment two
The production technology of the corrosion resistant automobile using bolt of the present embodiment, comprises the following steps：
(i) dispensing：The mass percent of each composition is in the corrosion resistant automobile using bolt：C：0.02%, Fe:1.33%,Zn:
0.46%,Mn：0.54%, Cr：0.17%, Ni：0.66%, Mo：0.22%, Ti：0.77%, Pd：0.18%,Pt：0.22%, Nd：
0.32%,Ce：0.08%,Eu：0.24%,Lu:0.27%, Ga：0.07%, Y：0.03%, Sn：0.71%, Zr：0.05%, Re：
0.03%, magnesia：0.13%, manganese dioxide：0.05%, surplus Al；
(ii) cylindrical blank is prepared：Using step, (i) metal wire rod is made by melting as raw material in middle dispensing, unidirectional by moveable scissor
Metal wire rod is blocked in movement, and cylindrical blank is made；
(iii) cold-heading：The cylindrical blank is subjected to cold-heading molding using cold-heading equipment, the screw head of bolt is formed by mould molding
And screw rod；
(iv) threading：Screw thread is rubbed on the screw rod of bolt using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed on the screw rod of screw using threading equipment；
B, second of threading, threading is carried out on the shallow thread on the screw rod of screw using threading equipment and deepens to rub final spiral shell
Line；
C, cleaning is deoiled；
(v) bolt is heat-treated, concrete technology is：
A, heat：Bolt is heated to 700 DEG C, and is incubated 2 hours；
B, cool down：Use the air-cooled cooldown rate with 6 DEG C/s to accelerate bolt after being cooled to 350 DEG C, then be air-cooled to room temperature；
C, once it is tempered：After bolt is heated into 660 DEG C of tempering 50min, warm 55s is treated, makes bolt equalizing temperature, afterwards with 12
DEG C/s cooldown rate accelerates after being cooled to 240 DEG C, then is air-cooled to room temperature；
D, double tempering：By once be tempered after bolt be heated to 560 DEG C tempering 65min, after be air-cooled to room temperature；
E, clean；
(vi) pickling：Bolt after tempering is placed in the hydrochloric acid that concentration is 15% and soaks 8min, clear water is cleaned, then is placed in concentration and is
12min is soaked in 1% phosphate solution, is finally cleaned with clear water；
(vii) bolt is put into electrolyte, is switched on power using bolt as anode and carry out anodic oxidation, the voltage of anodic oxidation is
600V, the electric current of anodic oxidation is 8 amperes/square decimeter, and the power supply is the pulse power, and the frequency of the pulse power is
1000 hertz, dutycycle 25%；
(viii) clean and dry；
(ix) pack.
The present invention is not limited to above-described embodiment.All technical schemes formed using equivalent substitution, all falling within the present invention will
The protection domain asked.
Claims (4)
- A kind of 1. production technology of corrosion resistant automobile using bolt, it is characterised in that：Comprise the following steps：(i) dispensing：The mass percent of each composition is in the corrosion resistant automobile using bolt：C：0.01-0.02%, Fe: 1.16-1.33%,Zn:0.25-0.46%,Mn：0.37-0.54%, Cr：0.13-0.17%, Ni：0.55-0.66%, Mo：0.11- 0.22%, Ti：0.56-0.77%, Pd：0.13-0.18%,Pt：0.15-0.22%, Nd：0.14-0.32%,Ce：0.02- 0.08%,Eu：0.13-0.24%,Lu:0.11-0.27%, Ga：0.03-0.07%, Y：0.01-0.03%, Sn：0.66-0.71%, Zr：0.02-0.05%, Re：0.01-0.03%, magnesia：0.11-0.13%, manganese dioxide：0.02-0.05%, surplus Al；(ii) cylindrical blank is prepared：Using step, (i) metal wire rod is made by melting as raw material in middle dispensing, unidirectional by moveable scissor Metal wire rod is blocked in movement, and cylindrical blank is made；(iii) cold-heading：The cylindrical blank is subjected to cold-heading molding using cold-heading equipment, the screw head of bolt is formed by mould molding And screw rod；(iv) threading：Screw thread is rubbed on the screw rod of bolt using threading equipment, comprised the following steps thatA, first time threading, shallow thread is rubbed on the screw rod of screw using threading equipment；B, second of threading, threading is carried out on the shallow thread on the screw rod of screw using threading equipment and deepens to rub final spiral shell Line；C, cleaning is deoiled；(v) bolt is heat-treated, concrete technology is：A, heat：Bolt is heated to 700-720 DEG C, and is incubated 1-3 hours；B, cool down：Use the air-cooled cooldown rate with 5-8 DEG C/s to accelerate bolt after being cooled to 330-360 DEG C, then be air-cooled to room Temperature；C, once it is tempered：After bolt is heated into 650-670 DEG C of tempering 50-55min, warm 50-60s is treated, makes bolt temperature uniform Change, accelerated afterwards with 10-12 DEG C/s cooldown rate after being cooled to 220-260 DEG C, then be air-cooled to room temperature；D, double tempering：By once be tempered after bolt be heated to 550-580 DEG C tempering 60-75min, after be air-cooled to room temperature；E, clean；(vi) pickling：Bolt after tempering is placed in the hydrochloric acid that concentration is 10-15% and soaks 5-8min, clear water is cleaned, then is placed in dense Spend to soak 10-12min in 1-2% phosphate solutions, finally cleaned with clear water；(vii) bolt is put into electrolyte, is switched on power using bolt as anode and carry out anodic oxidation, the voltage of anodic oxidation is 500-600V, the electric current of anodic oxidation are 8 amperes/square decimeter, and the power supply is the pulse power, the frequency of the pulse power For 1000 hertz, dutycycle 25%；(viii) clean and dry；(ix) pack.
- 2. the production technology of corrosion resistant automobile using bolt according to claim 1, it is characterised in that：Step (i) described in The mass percent of each composition is in corrosion resistant automobile using bolt：C：0.01%, Fe:1.16%,Zn:0.25%,Mn：0.37%, Cr：0.13%, Ni：0.55%, Mo：0.11%, Ti：0.56%, Pd：0.13%,Pt：0.15%, Nd：0.14%,Ce：0.02%, Eu：0.13%,Lu:0.11%, Ga：0.03%, Y：0.01%, Sn：0.66%, Zr：0.02%, Re：0.01%, magnesia：0.11%, Manganese dioxide：0.02%, surplus Al.
- 3. the production technology of corrosion resistant automobile using bolt according to claim 1, it is characterised in that：Step (i) described in The mass percent of each composition is in corrosion resistant automobile using bolt：C：0.02%, Fe:1.33%,Zn:0.46%,Mn：0.54%, Cr：0.17%, Ni：0.66%, Mo：0.22%, Ti：0.77%, Pd：0.18%,Pt：0.22%, Nd：0.32%,Ce：0.08%, Eu：0.24%,Lu:0.27%, Ga：0.07%, Y：0.03%, Sn：0.71%, Zr：0.05%, Re：0.03%, magnesia：0.13%, Manganese dioxide：0.05%, surplus Al.
- 4. the production technology of corrosion resistant automobile using bolt according to claim 1, it is characterised in that：Step is (v) by bolt It is heat-treated, concrete technology is：A, heat：Bolt is heated to 700 DEG C, and is incubated 2 hours；B, cool down：Use the air-cooled cooldown rate with 6 DEG C/s to accelerate bolt after being cooled to 350 DEG C, then be air-cooled to room temperature；C, once it is tempered：After bolt is heated into 660 DEG C of tempering 50min, warm 55s is treated, makes bolt equalizing temperature, afterwards with 12 DEG C/s cooldown rate accelerates after being cooled to 240 DEG C, then is air-cooled to room temperature；D, double tempering：By once be tempered after bolt be heated to 560 DEG C tempering 65min, after be air-cooled to room temperature；E, clean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937449.4A CN107747583A (en) | 2017-09-30 | 2017-09-30 | A kind of production technology of corrosion resistant automobile using bolt |
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| CN109719470A (en) * | 2019-03-07 | 2019-05-07 | 嘉兴斯迈欧五金科技有限公司 | A kind of production technology of high-strength fastening bolt |
| CN112648276A (en) * | 2020-11-05 | 2021-04-13 | 苏州华丰不锈钢紧固件有限公司 | T-shaped bolt and manufacturing method thereof |
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