CN111715721A - Preparation method of stainless steel structural type rivet line - Google Patents
Preparation method of stainless steel structural type rivet line Download PDFInfo
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- CN111715721A CN111715721A CN201910210436.6A CN201910210436A CN111715721A CN 111715721 A CN111715721 A CN 111715721A CN 201910210436 A CN201910210436 A CN 201910210436A CN 111715721 A CN111715721 A CN 111715721A
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- stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
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Abstract
The invention discloses a preparation method of a stainless steel structural type rivet line, which comprises the following steps: s1: selecting raw materials, S2: raw material on-line pretreatment, S3: continuous drawing, S4: online flour removal, S5: online cleaning, S6: on-line bright heat treatment, S7: online coating and drying treatment, S8: wire take-up, S9: final processing, S10: and (6) packaging. The preparation method is more scientific and reasonable, can increase the pressure of the lubricating powder, leads the surface to carry more powder as much as possible, generally increases the powder carrying amount by 30-50 percent compared with single-mode drawing, increases a powder stirring device, prevents the powder from forming a cavity effect, reduces the powder carrying effect, uses a diamond die, can increase the temperature during drawing, ensures the best combination of the lubricating coating and the steel wire surface, ensures that the coating is firmest, adopts a pollution-free water-soluble lubricating coating and the lubricating powder to be easily cleaned, reduces the environmental pollution of downstream customers, and is an environment-friendly stainless steel product.
Description
Technical Field
The invention relates to the field of preparation methods of stainless steel structural type rivet lines, in particular to a preparation method of a stainless steel structural type rivet line.
Background
In recent years, with the progress and development of human socioeconomic, stainless steel has more and more extensive use due to various characteristics such as good corrosion resistance, good mechanical property and good appearance, particularly, with the rapid development of socioeconomic and scientific technology in China, stainless steel has also been rapidly developed, stainless steel wire has also been widely used, stainless steel structural rivets have higher mechanical property than aluminum rivets, and stainless steel structural rivets and common rivets have high strength, a typical disc in-disc characteristic is that a rivet core is locked in a rivet body and is not loosened after riveting is completed, and the structural rivets give attention to a rivet core retention force, so the fields such as high-speed rail cars, locomotives, elevators and the like are widely applied, but the development of the structural rivets has a certain difference with the foreign countries! Domestic equipment and raw materials are insufficient, particularly, domestic few manufacturers capable of producing the rivets rely on imported Korean and Japanese wire rods basically, but the price of the domestic few manufacturers is about 40% higher than that of domestic similar wire rods, so that the cost of domestic manufacturers is increased, the market competitiveness is reduced, and the development of the steel wires is very important and is not slow.
In recent years, due to the fact that high-speed rails in China are rapidly developed in the automobile industry, particularly the high-speed rails become business cards in the global high-speed rail field, continuous and rapid development is achieved in the future, various high-quality and high-requirement accessories which are correspondingly matched can rise with water and follow synchronous development, the stainless steel wires produced by domestic large stainless steel wire drawing factories can not reach the same level abroad due to the problems of raw materials, technology, equipment and the like, the successful development of the stainless steel wire drawing factory can replace imported wires, the domestic and international competitiveness of stainless steel structural rivets produced and sold by domestic rivet factories is greatly improved, and economic benefits are improved.
Disclosure of Invention
The invention aims to provide a preparation method of a stainless steel structural type rivet line, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a stainless steel structural type rivet line comprises the following steps:
s1: selecting raw materials, namely selecting domestic customized stainless steel raw materials;
s2: the raw materials are pretreated on line, and an off-line solid solution process is adopted, so that the tensile strength of the raw materials is less than 550MPa, the hardness is HB150 or less, and the grain size of the material is 5-6 grade;
s3: continuous drawing, in which a drawing device is used for carrying out continuous drawing processing on the raw material in S2;
s4: removing powder on line, and removing powder on the surface of the raw material;
s5: an on-line cleaning step of cleaning the treated material in S4;
s6: carrying out online bright heat treatment, wherein the upper limit of the solution treatment of the austenitic stainless steel is 1100+/-10 ℃ when the semi-finished product is subjected to heat treatment;
s7: coating and drying on line, namely coating by adopting imported lubricating coating and lubricating powder, and drying after the coating is finished;
s8: taking up, namely taking up by using a take-up device, so that the wire is tightly taken up, and the flatness of the steel wire is ensured;
s9: final treatment, namely drawing in a double mode, so as to ensure that the coating on the surface of the steel wire is firmly combined and is not easy to fall off, and because a downstream rivet factory needs to perform three times of diameter shrinkage during rivet processing;
s10: and (5) packaging, namely packaging by adopting a composite moisture-proof and protective packaging material.
Preferably, the material in S2 has better shaping and cold working properties.
Preferably, the lubricating coating in S7 has better moisture resistance, and the lubricating powder has the characteristics of low melting point and high carbonization temperature.
Preferably, the double-die drawing in S9 is a black die and a diamond die respectively, and the powder carrying amount is increased by 30-50% compared with that of single-die drawing.
Preferably, the protective packaging material in S10 is a plastic film and a composite woven tape, and the packaging specification is 500 kg/piece.
Preferably, the wire take-up device in S8 is the wire take-up device in the patent technology (ZL 201721589375.1).
Preferably, the drawing temperature in the S9 is about 150-200 ℃, which is just the melting point of the lubricating powder, so that the optimal combination of the lubricating coating and the steel wire surface is ensured.
Compared with the prior art, the invention has the beneficial effects that: the preparation method is more scientific and reasonable, can increase the pressure of the lubricating powder, leads the surface to carry more powder as much as possible, generally increases the powder carrying amount by 30-50 percent compared with single-mode drawing, increases a powder stirring device, prevents the powder from forming a cavity effect, reduces the powder carrying effect, uses a diamond die, can increase the temperature during drawing, ensures the optimal combination of the lubricating coating and the steel wire surface, ensures the firmest coating, adopts the pollution-free and water-soluble lubricating coating and the lubricating powder, is extremely easy to clean, reduces the environmental pollution of downstream customers, and is an environment-friendly stainless steel product.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: a preparation method of a stainless steel structural type rivet line comprises the following steps:
s1: selecting raw materials, namely selecting domestic customized stainless steel raw materials;
s2: the raw materials are pretreated on line, and an off-line solid solution process is adopted, so that the tensile strength of the raw materials is less than 550MPa, the hardness is HB150 or below, the grain size of the material is 5-6 grade, and the material has good shaping and cold processing performances;
s3: continuous drawing, in which a drawing device is used for carrying out continuous drawing processing on the raw material in S2;
s4: removing powder on line, and removing powder on the surface of the raw material;
s5: an on-line cleaning step of cleaning the treated material in S4;
s6: carrying out online bright heat treatment, wherein the upper limit of the solution treatment of the austenitic stainless steel is 1100+/-10 ℃ when the semi-finished product is subjected to heat treatment;
s7: the online coating and drying treatment is carried out, the imported lubricating coating and the imported lubricating powder are adopted for coating, and drying is carried out after the coating is finished, so that the lubricating coating has good moisture resistance, and the lubricating powder has the characteristics of low melting point and high carbonization temperature;
s8: taking up, namely taking up by using a take-up device, so that a wire rod is tightly taken up, and the flatness of a steel wire is ensured, wherein the take-up device is the take-up device in the patent technology (ZL 201721589375.1);
s9: final treatment, namely double-mold drawing, wherein the coating on the surface of the steel wire is firmly combined and is not easy to fall off, three times of diameter reduction are required during rivet processing in a downstream rivet factory, the double-mold drawing is a black mold and a diamond mold respectively, the powder carrying amount is increased by 30-50% compared with that of single-mold drawing, the drawing temperature is about 150-200 ℃, the drawing temperature is just the melting point of lubricating powder, and the optimal combination of the lubricating coating and the surface of the steel wire is ensured;
s10: and (3) packaging, namely packaging by adopting a composite moisture-proof and protective packaging material, wherein the protective packaging material is a plastic film and a composite woven belt, and the packaging specification is 500 kg/piece.
Example two
The invention provides a technical scheme that: a preparation method of a stainless steel structural type rivet line comprises the following steps:
s1: selecting raw materials, namely selecting domestic customized stainless steel raw materials;
s2: the raw materials are pretreated on line, and an off-line solid solution process is adopted, so that the tensile strength of the raw materials is less than 450MPa, the hardness is HB150 or less, the grain size of the material is 5-6 grade, and the material has good shaping and cold processing performances;
s3: continuous drawing, in which a drawing device is used for carrying out continuous drawing processing on the raw material in S2;
s4: removing powder on line, and removing powder on the surface of the raw material;
s5: an on-line cleaning step of cleaning the treated material in S4;
s6: carrying out online bright heat treatment, wherein the upper limit of the solution treatment of the austenitic stainless steel is 1100+/-10 ℃ when the semi-finished product is subjected to heat treatment;
s7: the online coating and drying treatment is carried out, the imported lubricating coating and the imported lubricating powder are adopted for coating, and drying is carried out after the coating is finished, so that the lubricating coating has good moisture resistance, and the lubricating powder has the characteristics of low melting point and high carbonization temperature;
s8: taking up, namely taking up by using a take-up device, so that a wire rod is tightly taken up, and the flatness of a steel wire is ensured, wherein the take-up device is the take-up device in the patent technology (ZL 201721589375.1);
s9: final treatment, namely double-mold drawing, wherein the coating on the surface of the steel wire is firmly combined and is not easy to fall off, three times of diameter reduction are required during rivet processing in a downstream rivet factory, the double-mold drawing is a black mold and a diamond mold respectively, the powder carrying amount is increased by 30-50% compared with that of single-mold drawing, the drawing temperature is about 50-100 ℃, and is just the melting point of lubricating powder, so that the optimal combination of the lubricating coating and the surface of the steel wire is ensured;
s10: and (3) packaging, namely packaging by adopting a composite moisture-proof and protective packaging material, wherein the protective packaging material is a plastic film and a composite woven belt, and the packaging specification is 500 kg/piece.
Through the comparison experiment of the two groups of embodiments, the rivet line with the uniform and scratch-free surface can be prepared, the preparation method is more scientific and reasonable, the pressure of the lubricating powder can be increased, the surface can be provided with more powder as much as possible, the powder carrying amount is increased by 30-50% compared with that of single-mode drawing, a powder stirring device is added, the powder is prevented from forming a cavity effect, the powder carrying effect is reduced, a diamond die is used, the drawing temperature can be increased, the drawing temperature is about 150-200 ℃, the melting point of the lubricating powder is exactly the melting point of the lubricating powder, the optimal combination of the lubricating coating and the steel wire surface is guaranteed, the coating is firmer, the pollution-free water-soluble lubricating coating and the lubricating powder are adopted, the rivet line is extremely easy to clean, the environmental pollution of downstream customers is reduced, and the rivet line is an environment-friendly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation method of the stainless steel structural type rivet line is characterized by comprising the following steps:
s1: selecting raw materials, namely selecting domestic customized stainless steel raw materials;
s2: the raw materials are pretreated on line, and an off-line solid solution process is adopted, so that the tensile strength of the raw materials is less than 550MPa, the hardness is HB150 or less, and the grain size of the material is 5-6 grade;
s3: continuous drawing, in which a drawing device is used for carrying out continuous drawing processing on the raw material in S2;
s4: removing powder on line, and removing powder on the surface of the raw material;
s5: an on-line cleaning step of cleaning the treated material in S4;
s6: carrying out online bright heat treatment, wherein the upper limit of the solution treatment of the austenitic stainless steel is 1100+/-10 ℃ when the semi-finished product is subjected to heat treatment;
s7: coating and drying on line, namely coating by adopting imported lubricating coating and lubricating powder, and drying after the coating is finished;
s8: taking up, namely taking up by using a take-up device, so that the wire is tightly taken up, and the flatness of the steel wire is ensured;
s9: final treatment, namely drawing in a double mode, so as to ensure that the coating on the surface of the steel wire is firmly combined and is not easy to fall off, and because a downstream rivet factory needs to perform three times of diameter shrinkage during rivet processing;
s10: and (5) packaging, namely packaging by adopting a composite moisture-proof and protective packaging material.
2. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the material in S2 has better shaping and cold working properties.
3. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the lubricating coating in the S7 has good moisture resistance, and the lubricating powder has the characteristics of low melting point and high carbonization temperature.
4. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the double-die drawing in the S9 is respectively a black-light die and a diamond die, and the powder carrying amount is increased by 30-50% compared with that of single-die drawing.
5. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the protective packaging material in the S10 is a plastic film and a composite woven belt, and the packaging specification is 500kg per piece.
6. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the take-up device in the S8 adopts a take-up device in the patent technology (ZL 201721589375.1).
7. The method for manufacturing a stainless steel structural type rivet line according to claim 1, characterized in that: the drawing temperature in the S9 is about 150-200 ℃, which is just the melting point of the lubricating powder, and the optimal combination of the lubricating coating and the steel wire surface is ensured.
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| CN201910210436.6A CN111715721A (en) | 2019-03-20 | 2019-03-20 | Preparation method of stainless steel structural type rivet line |
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| CN201910210436.6A CN111715721A (en) | 2019-03-20 | 2019-03-20 | Preparation method of stainless steel structural type rivet line |
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