CN107779749A - The production method of screw - Google Patents
The production method of screw Download PDFInfo
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- CN107779749A CN107779749A CN201711033541.4A CN201711033541A CN107779749A CN 107779749 A CN107779749 A CN 107779749A CN 201711033541 A CN201711033541 A CN 201711033541A CN 107779749 A CN107779749 A CN 107779749A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of production method of fastener, and in particular to the production method of screw, belongs to the preparing technical field of alloy material.Present invention solves the technical problem that being to provide the production method of screw, this method comprises the following steps：A, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Screw after machining is warming up to 800~1000 DEG C, 20~30min is incubated, is then divided to two sections of acceleration to be cooled to less than 400 DEG C, is air-cooled to room temperature；Screw is tempered again；B, screw is subjected to degreasing and rust removal, activation process, Passivation Treatment, you can screw finished product is made.The constituent and content of screw of the present invention are reasonable in design, the surface with hard wear resistant and tough and tensile center portion after Overheating Treatment, have preferable tensile strength and yield strength, better mechanical property, hardness is high, substantially prolongs service life.In addition, the inventive method is simple, cost is low, it is easy to accomplish.
Description
Technical field
The present invention relates to a kind of production method of fastener, and in particular to the production method of screw, belongs to alloy material
Preparing technical field.
Background technology
Fastener, it is to be fastenedly connected with and apply extremely wide a kind of machine components.Fastener, it is wide using industry
It is general, including the energy, electronics, electrical equipment, machinery, chemical industry, metallurgy, mould, hydraulic pressure etc. industry, various machineries, equipment, vehicle,
Above ship, railway, bridge, building, structure, instrument, instrument, chemical industry, instrument and articles for use etc., it can be seen that miscellaneous
Fastener, it is most widely used mechanical basic part.Its feature is that description is various, and performance purposes is different, and standard
Change, seriation, unitized degree are also high.Therefore, also that a kind of fastener of obtained official standard called standard is tight by someone
Firmware, or referred to as standard component.
Screw, it is a kind of common fastener of in the market.It is a kind of fastener being made up of head and screw rod two parts,
It can be divided into, according to use, three classes：Machine screw, holding screw and specific use screw.Machine screw is mainly used in a clamp screw
Being fastenedly connected between the part of pit, with a part with through hole, it is not necessary to which (this type of attachment is referred to as nut cooperation
Mode connects for screw, fall within and be detachably connected；It can also coordinate with nut, connect for the fastening between two parts with through hole
Connect.) holding screw is mainly used in the relative position fixed between two parts.Specific use screw supplies such as having lifting bolt
Part is lifted to use.
Existing screw mostly uses bulk metal structure, still suffers from some problems, as weight is big, materials cost is high, resistance to
Mill property, hardness, rustless property, decay resistance, high and low temperature resistance, fragility, toughness etc. are general, can not meet in many occasions
The needs of production, also need further to improve, to improve production efficiency, reduce cost, improve security, extend the use of screw
Life-span.
The content of the invention
For disadvantages described above, present invention solves the technical problem that it is to provide the production method of screw, the spiral shell of this method production
It is high to follow closely intensity, service life length.
The production method of screw of the present invention, comprises the following steps：
A, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Will
Screw after machining is warming up to 800~1000 DEG C, is incubated 20~30min, is then accelerated with 1~3 DEG C/s cooling velocity
It is cooled to 600~750 DEG C；Cooling velocity is increased into 0.5~1.5 DEG C/s again, less than 400 DEG C is cooled to, is air-cooled to room temperature；Again will
Screw is tempered, and the temperature of temper is 200~240 DEG C, and tempering time is 60~80min；
B, the screw after heat treatment is subjected to degreasing and rust removal, activation process, Passivation Treatment, you can screw finished product is made.
Further, the degreasing and rust removal is preferably with the following method：Screw is immersed in oil-removing rust-removing agent, it is described to remove
Oily rust remover is made up of the component of following parts by weight：30~40 parts of methacrylic resin, 10~20 parts of organic phosphoric acid, citric acid
4~10 parts, 4~8 parts of triethanolamine, 10~15 parts of fire retardant, 1~3 part of corrosion inhibiter, 1~3 part of bleeding agent, surfactant 5~
10 parts, 60~80 parts of water.
Preferably, the oil-removing rust-removing agent is made up of the component of following parts by weight：35 parts of methacrylic resin,
15 parts of organic phosphoric acid, 6 parts of citric acid, 7 parts of triethanolamine, 12 parts of fire retardant, 2 parts of corrosion inhibiter, 2 parts of bleeding agent, surfactant 8
Part, 70 parts of water.
Preferably, the fire retardant is APP；The corrosion inhibiter is ammonium molybdate, and the bleeding agent is fatty alcohol polyoxy
Vinethene, the surfactant are dodecyl sodium sulfate.
Preferably, the acceleration cooling of a steps is carried out by applying cooling medium.
It is further preferred that the cooling medium is compressed air or gas-vapor mix.
Preferably, the screw consists of the following components in percentage by weight：C：0.18%~0.25%, Si：0.2~
0.25%, Mn：1.14~1.82%；Cr：1.40~1.52%；Ti：0.13~0.51%, Ni：0.05~0.08%, P≤
0.02%, S≤0.02%, O≤0.02%, remaining is Fe and inevitable impurity.
It is further preferred that the screw consists of the following components in percentage by weight：C：0.21%~0.24%, Si：
0.21~0.23%, Mn：1.42~1.53%；Cr：1.42~1.48%；Ti：0.25~0.41%, Ni：0.06~0.07%,
P≤0.02%, S≤0.02%, O≤0.02%, remaining is Fe and inevitable impurity.
Compared with prior art, the present invention has the advantages that：
The constituent and content of screw of the present invention are reasonable in design, after Overheating Treatment with hard wear resistant surface and
Tough and tensile center portion, there is preferable tensile strength and yield strength, better mechanical property, hardness is high, substantially prolongs use
Life-span.In addition, the inventive method is simple, cost is low, it is easy to accomplish.
Embodiment
The production method of screw of the present invention, comprises the following steps：
A, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Will
Screw after machining is warming up to 800~1000 DEG C, is incubated 20~30min, is then accelerated with 1~3 DEG C/s cooling velocity
It is cooled to 600~750 DEG C；Cooling velocity is increased into 0.5~1.5 DEG C/s again, less than 400 DEG C is cooled to, is air-cooled to room temperature；Again will
Screw is tempered, and the temperature of temper is 200~240 DEG C, and tempering time is 60~80min；
B, the screw after heat treatment is subjected to degreasing and rust removal, activation process, Passivation Treatment, you can screw finished product is made.
Activation process of the present invention, Passivation Treatment are prior art.
Further, the degreasing and rust removal is preferably with the following method：Screw is immersed in oil-removing rust-removing agent, it is described to remove
Oily rust remover is made up of the component of following parts by weight：30~40 parts of methacrylic resin, 10~20 parts of organic phosphoric acid, citric acid
4~10 parts, 4~8 parts of triethanolamine, 10~15 parts of fire retardant, 1~3 part of corrosion inhibiter, 1~3 part of bleeding agent, surfactant 5~
10 parts, 60~80 parts of water.
Preferably, the oil-removing rust-removing agent is made up of the component of following parts by weight：35 parts of methacrylic resin,
15 parts of organic phosphoric acid, 6 parts of citric acid, 7 parts of triethanolamine, 12 parts of fire retardant, 2 parts of corrosion inhibiter, 2 parts of bleeding agent, surfactant 8
Part, 70 parts of water.
Fire retardant, corrosion inhibiter, bleeding agent and surfactant commonly used in the art is applied to the present invention.In order to improve
The efficiency of degreasing and rust removal, so as to improve the mechanical performance of screw, it is preferred that the fire retardant is APP；The corrosion inhibiter
For ammonium molybdate, the bleeding agent is AEO, and the surfactant is dodecyl sodium sulfate.
Preferably, the acceleration cooling of a steps is carried out by applying cooling medium.
The present invention only requires to cooling velocity, to cooling medium without limiting, as long as can reach corresponding cooling velocity
, for example, the cooling medium can be compressed air or gas-vapor mix.
The method of the present invention, can be prepared screw, in order to improve the hardness of screw and use using common iron
Life-span, it is preferred that the screw consists of the following components in percentage by weight：C：0.18%~0.25%, Si：0.2~
0.25%, Mn：1.14~1.82%；Cr：1.40~1.52%；Ti：0.13~0.51%, Ni：0.05~0.08%, P≤
0.02%, S≤0.02%, O≤0.02%, remaining is Fe and inevitable impurity.
It is further preferred that the screw consists of the following components in percentage by weight：C：0.21%~0.24%, Si：
0.21~0.23%, Mn：1.42~1.53%；Cr：1.42~1.48%；Ti：0.25~0.41%, Ni：0.06~0.07%,
P≤0.02%, S≤0.02%, O≤0.02%, remaining is Fe and inevitable impurity.
The embodiment of the present invention is further described with reference to embodiment, therefore not limited the present invention
System is among described scope of embodiments.
Embodiment 1
Screw is produced as follows：
A, design steel product ingredient consists of the following components in percentage by weight：C：0.21%, Si：0.23%, Mn：
1.53%；Cr：1.42%；Ti：0.41%, Ni：0.06%, P≤0.02%, S≤0.02%, O≤0.02%, remaining be Fe and
Inevitable impurity.
B, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Will
Screw after machining is warming up to 800 DEG C, is incubated 30min, then accelerates to be cooled to 600 DEG C with 3 DEG C/s cooling velocity；Again
Accelerate to be cooled to 4 DEG C/s cooling velocity to be cooled to less than 400 DEG C, be air-cooled to room temperature；Screw is tempered again, at tempering
The temperature of reason is 200 DEG C, tempering time 80min；
C, the screw after heat treatment is immersed in oil-removing rust-removing agent, carries out degreasing and rust removal：The oil-removing rust-removing agent by with
The component composition of lower parts by weight：It is 30 parts of methacrylic resin, 10 parts of organic phosphoric acid, 10 parts of citric acid, 4 parts of triethanolamine, poly-
15 parts of ammonium phosphate, 1 part of ammonium molybdate, 1 part of AEO, 10 parts of dodecyl sodium sulfate, 60 parts of water.
D, the screw after degreasing and rust removal is subjected to Conventional activation processing, Passivation Treatment, you can screw finished product is made.
After tested, the tensile strength of the screw is 1445MPa, and yield strength 1004MPa, HRC hardness are 48.
Embodiment 2
Screw is produced as follows：
A, design steel product ingredient consists of the following components in percentage by weight：C：0.24%, Si：0.21%, Mn：
1.42%；Cr：1.48%；Ti：0.25%, Ni：0.07%, P≤0.02%, S≤0.02%, O≤0.02%, remaining be Fe and
Inevitable impurity.
B, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Will
Screw after machining is warming up to 1000 DEG C, is incubated 20min, then accelerates to be cooled to 750 DEG C with 1 DEG C/s cooling velocity；
Accelerate to be cooled to 2.5 DEG C/s cooling velocity again to be cooled to less than 400 DEG C, be air-cooled to room temperature；Screw is tempered again, returned
The temperature of fire processing is 240 DEG C, tempering time 60min；
C, the screw after heat treatment is immersed in oil-removing rust-removing agent, carries out degreasing and rust removal：The oil-removing rust-removing agent by with
The component composition of lower parts by weight：40 parts of methacrylic resin, 20 parts of organic phosphoric acid, 4 parts of citric acid, 8 parts of triethanolamine, poly- phosphorus
Sour 10 parts of ammonium, 3 parts of ammonium molybdate, 3 parts of AEO, 5 parts of dodecyl sodium sulfate, 80 parts of water.
D, the screw after degreasing and rust removal is subjected to Conventional activation processing, Passivation Treatment, you can screw finished product is made.
After tested, the tensile strength of the screw is 1439MPa, and yield strength 1001MPa, HRC hardness are 47.
Embodiment 3
Screw is produced as follows：
A, design steel product ingredient consists of the following components in percentage by weight：C：0.23%, Si：0.22%, Mn：
1.48%；Cr：1.45%；Ti：0.32%, Ni：0.06%, P≤0.02%, S≤0.02%, O≤0.02%, remaining be Fe and
Inevitable impurity.
B, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：Will
Screw after machining is warming up to 900 DEG C, is incubated 25min, then accelerates to be cooled to 700 DEG C with 2 DEG C/s cooling velocity；Again
Accelerate to be cooled to 3 DEG C/s cooling velocity to be cooled to less than 400 DEG C, be air-cooled to room temperature；Screw is tempered again, at tempering
The temperature of reason is 200 DEG C, tempering time 70min；
C, the screw after heat treatment is immersed in oil-removing rust-removing agent, carries out degreasing and rust removal：The oil-removing rust-removing agent by with
The component composition of lower parts by weight：35 parts of methacrylic resin, 15 parts of organic phosphoric acid, 6 parts of citric acid, 7 parts of triethanolamine, poly- phosphorus
Sour 12 parts of ammonium, 2 parts of ammonium molybdate, 2 parts of AEO, 8 parts of dodecyl sodium sulfate, 70 parts of water.
D, the screw after degreasing and rust removal is subjected to Conventional activation processing, Passivation Treatment, you can screw finished product is made.
After tested, the tensile strength of the screw is 1457MPa, and yield strength 1009MPa, HRC hardness are 50.
Claims (8)
1. the production method of screw, it is characterised in that comprise the following steps：
A, it is heat-treated after steel are machined, obtains screw blank, wherein, described heat treatment method is：By machinery
Screw after processing is warming up to 800~1000 DEG C, is incubated 20~30min, then accelerates cooling with 1~3 DEG C/s cooling velocity
To 600~750 DEG C；Cooling velocity is increased into 0.5~1.5 DEG C/s again, less than 400 DEG C is cooled to, is air-cooled to room temperature；Again by screw
It is tempered, the temperature of temper is 200~240 DEG C, and tempering time is 60~80min；
B, the screw after heat treatment is subjected to degreasing and rust removal, activation process, Passivation Treatment, you can screw finished product is made.
2. the production method of screw according to claim 1, it is characterised in that：The degreasing and rust removal is with the following method：
Screw is immersed in oil-removing rust-removing agent, the oil-removing rust-removing agent is made up of the component of following parts by weight：Methacrylic resin
30~40 parts, 10~20 parts of organic phosphoric acid, 4~10 parts of citric acid, 4~8 parts of triethanolamine, 10~15 parts of fire retardant, corrosion inhibiter 1
~3 parts, 1~3 part of bleeding agent, 5~10 parts of surfactant, 60~80 parts of water.
3. the production method of screw according to claim 2, it is characterised in that：The oil-removing rust-removing agent is by following parts by weight
Component composition：35 parts of methacrylic resin, 15 parts of organic phosphoric acid, 6 parts of citric acid, 7 parts of triethanolamine, 12 parts of fire retardant,
2 parts of corrosion inhibiter, 2 parts of bleeding agent, 8 parts of surfactant, 70 parts of water.
4. the production method of the screw according to Claims 2 or 3, it is characterised in that：The fire retardant is APP；Institute
It is ammonium molybdate to state corrosion inhibiter, and the bleeding agent is AEO, and the surfactant is dodecyl sodium sulfate.
5. the production method of the screw according to any one of Claims 1 to 4, it is characterised in that：The acceleration of a steps cools down
Carried out by applying cooling medium.
6. the production method of screw according to claim 5, it is characterised in that：The cooling medium is compressed air or water
Vapour mixture.
7. the production method of the screw according to any one of claim 1~6, it is characterised in that：The screw is by following heavy
Measure the component composition of percentage：C：0.18%~0.25%, Si：0.2~0.25%, Mn：1.14~1.82%；Cr：1.40~
1.52%；Ti：0.13~0.51%, Ni：0.05~0.08%, P≤0.02%, S≤0.02%, O≤0.02%, remaining is Fe
And inevitable impurity.
8. the production method of screw according to claim 7, it is characterised in that：The screw is by following percentage by weight
Component forms：C：0.21%~0.24%, Si：0.21~0.23%, Mn：1.42~1.53%；Cr：1.42~1.48%；Ti：
0.25~0.41%, Ni：0.06~0.07%, P≤0.02%, S≤0.02%, O≤0.02%, remaining is for Fe and unavoidably
Impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033541.4A CN107779749A (en) | 2017-10-30 | 2017-10-30 | The production method of screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033541.4A CN107779749A (en) | 2017-10-30 | 2017-10-30 | The production method of screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779749A true CN107779749A (en) | 2018-03-09 |
Family
ID=61432210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711033541.4A Pending CN107779749A (en) | 2017-10-30 | 2017-10-30 | The production method of screw |
Country Status (1)
| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152926A (en) * | 2014-08-28 | 2014-11-19 | 赵理奎 | A steel environmental rust remover |
| CN105369156A (en) * | 2015-11-18 | 2016-03-02 | 宁波瑞尔汽车零部件有限公司 | Manufacturing method of screw |
| CN105483731A (en) * | 2015-12-04 | 2016-04-13 | 青岛唐鹏钢结构工程有限公司 | Steel structure surface rust removing agent |
-
2017
- 2017-10-30 CN CN201711033541.4A patent/CN107779749A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152926A (en) * | 2014-08-28 | 2014-11-19 | 赵理奎 | A steel environmental rust remover |
| CN105369156A (en) * | 2015-11-18 | 2016-03-02 | 宁波瑞尔汽车零部件有限公司 | Manufacturing method of screw |
| CN105483731A (en) * | 2015-12-04 | 2016-04-13 | 青岛唐鹏钢结构工程有限公司 | Steel structure surface rust removing agent |
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