CN111334727B - Preparation method of high-temperature alloy wire for improving yield of high-temperature alloy rivet - Google Patents
Preparation method of high-temperature alloy wire for improving yield of high-temperature alloy rivet Download PDFInfo
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- CN111334727B CN111334727B CN202010274865.2A CN202010274865A CN111334727B CN 111334727 B CN111334727 B CN 111334727B CN 202010274865 A CN202010274865 A CN 202010274865A CN 111334727 B CN111334727 B CN 111334727B
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- 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
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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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
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- 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
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- 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
Abstract
The invention discloses a preparation method of a high-temperature alloy wire rod for improving the yield of a high-temperature alloy rivet, and belongs to the technical field of preparation of high-temperature alloy wire rods. Aiming at the problems of scratches, peeling, dirt and the like on the surface of a high-temperature alloy wire rod drawn by the prior art, the invention provides a preparation method of the high-temperature alloy wire rod, which comprises the following steps: drawing and reducing the initial wire rod with the diameter of 8.0-12.0 mm on a single drawing machine with a fixed die to the diameter of 6.5 +/-0.2 mm, and then reducing the diameter of the initial wire rod to the diameter of 2.4mm or less by using a continuous drawing roller mode drawing machine until the specification is less than 6.3 mm. The invention combines the advantages of a single drawing machine with a fixed die and a roller die type drawing machine, and simultaneously designs a specific solution annealing treatment procedure according to initial wires and target wires with different specifications, so that the prepared wires have no quality defects on the surface, and can be used as raw materials for producing high-temperature alloy rivets, and the yield of the high-temperature alloy rivets is improved from 60% to more than 90%.
Description
Technical Field
The invention belongs to the technical field of high-temperature alloy wire preparation, and particularly relates to a preparation method of a high-temperature alloy wire for improving the yield of a high-temperature alloy rivet.
Background
The riveting has the advantages of simple operation, convenient replacement, small connection deformation, low requirement on connection environment and the like, and has wide application in the aerospace field all the time. With the increasing and improving metallurgical processes, more and more materials are used for producing rivets. The high-temperature alloy can work for a long time at a high temperature of more than 600 ℃ under the action of certain stress, has good oxidation resistance and hot corrosion resistance, and is widely applied to the aerospace field and the energy field. Meanwhile, the high temperature alloy is generally reinforced by adding an intermetallic compound formed by adding chromium, molybdenum, niobium, titanium, etc. to iron, nickel, and cobalt. Therefore, the high temperature alloy is generally expensive, and the high and low yield thereof has a direct influence on the price.
The high-temperature alloy wire used for preparing the high-temperature alloy rivet at present is generally subjected to reducing drawing by a fixed die after being smelted by a vacuum induction furnace, remelted by electroslag in protective atmosphere, cogging and rolled to a wire with the diameter of 8.0-12.0 mm. The equipment of the type has simple structure and low investment, and is widely applied to the production of various wires. In production using this type of apparatus, in order to ensure the life of the reducing die, a mixed type of solid powder and granular material is often used as a lubricant. Due to the shape of the granular material, the surface of the wire is often damaged when the wire is contacted with the wire and extruded to form a die. This damage will become more severe as the die wears and the temperature increases during the reduction process. When a damaged wire is used for rivet production, especially when a rivet head is formed at a high temperature, cracks are often formed at the edge of the rivet head, which results in scrapping of the rivet. The processing yield of the high-temperature alloy rivet is about 60 percent at present.
Based on the above situation, it is necessary to develop a research on a preparation method of a high-temperature alloy wire rod with good surface quality, improve the yield of the high-temperature alloy rivet, reduce the cost, and realize stable and batch production.
Disclosure of Invention
The invention aims to solve the technical problem that the surface of the high-temperature alloy wire for the rivet prepared by the prior art is damaged, particularly scratched, so that the yield of the high-temperature alloy rivet is influenced.
The invention solves the technical problems, adopts the technical scheme that the high-temperature alloy wire rod preparation method for improving the yield of the high-temperature alloy rivet comprises the following steps:
A. after surface treatment is carried out on a high-temperature alloy initial wire rod with the diameter of phi 8.0-12.0 mm, solution annealing treatment is carried out under the protection of inert gas, and then a fixed die single drawing machine is used for drawing and reducing the diameter to phi 6.5 +/-0.2 mm;
B. then reducing the diameter of the wire rod which is drawn and reduced to phi 6.5 +/-0.2 mm to the specification that the specification of phi 2.4mm is less than or equal to the specification of phi 6.3mm by using a continuous-drawing type roller mode wire drawing machine to obtain a high-temperature alloy wire rod;
wherein, in the step A: when the diameter phi of the initial wire rod is less than 10.2mm and less than or equal to 12.0mm, respectively reducing the diameter to phi 10.0 +/-0.2 mm, reducing the diameter to phi 8.0 +/-0.2 mm and reducing the diameter to phi 6.5 +/-0.2 mm by drawing, and then carrying out solution treatment under the protection of inert gas; when the diameter phi of 8.2mm < the initial wire rod is less than or equal to 10.2mm, respectively reducing the diameter to 8.0 +/-0.2 mm and reducing the diameter to 6.5 +/-0.2 mm, and then carrying out solution annealing treatment under the protection of inert gas; when the initial wire rod with the diameter phi of 8.0mm or less is less than or equal to 8.2mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 6.5 +/-0.2 mm;
in the step B: when the diameter phi is less than or equal to 2.4mm and the obtained high-temperature alloy wire rod is less than 4.6mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 4.8 +/-0.2 mm;
and cooling the wire by using a cooling liquid in the reducing process of the steps A and B.
In the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet, in the step A, the number plate of the initial wire rod of the high-temperature alloy with the diameter of 8.0-12.0 mm can be selected from GH4169, GH3030, GH3625, GH2132 and the like.
In the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet, in the step A, the surface of the high-temperature alloy wire rod with the diameter of 8.0-12.0 mm is in an acid pickling state; the surface treatment is carried out by adopting a polishing mode, so that the surface of the material has no defects such as burrs, pits, scratches, cracks and the like.
In the step A, one end of the high-temperature alloy initial wire with the diameter of 8.0-12.0 mm is conical, and the conical degree is 50-70 degrees.
In the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet, in the step A, the wire outlet speed is not more than 15m/min when the fixed die single drawing machine is used for drawing and reducing the diameter.
In the step B, the wire outlet speed is not more than 1.5m/s when the continuous drawing type roller mode wire drawing machine is used for reducing the diameter.
According to the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet, the inert gas is nitrogen with the purity of more than 99.99%.
The preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet comprises the following steps: heating the wire to 1060-1080 ℃, keeping the temperature for 30-60 min, and then cooling the wire to room temperature along with the furnace. The conditions for the solution treatment in each stage may be the same or different, and may be within the scope of the present invention.
The preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet comprises the following steps of preparing a high-temperature alloy wire rod, and cooling the high-temperature alloy wire rod by using water or water-soluble cutting fluid.
Preferably, in the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet, the cooling liquid is water-soluble cutting liquid; and in the cooling process, controlling the temperature of the water-soluble cutting fluid not to exceed 60 ℃.
The invention has the beneficial effects that:
the method combines the advantages of a fixed die single-drawing machine and a roller die type wire drawing machine, reduces the diameter of the wire with the diameter of 8-12 mm produced on a straight-advancing type high-speed wire rolling machine to the diameter of 6.5 +/-0.2 mm on the fixed die single-drawing machine, and then reduces the diameter of the wire with the diameter of 6.5 +/-0.2 mm to different specifications of the diameter 2.4 mm-diameter specification less than or equal to the specification of 6.3 mm. According to the method, the drawing powder is not used as a lubricant, a fixed die is not used, and a roller die is used for reducing, so that scratches, peeling, dirt and the like on the surface of the wire rod are effectively eliminated; meanwhile, a specific solution annealing treatment procedure is designed according to initial wires and target wires of different specifications, so that the surface of the wire is free of defects such as burrs, pits, scratches and cracks in the diameter reducing process, the prepared wire is free of quality defects, the wire can be used as a raw material for producing high-temperature alloy rivets, and the yield of the high-temperature alloy rivets is improved from about 60% to over 90%.
Detailed Description
Specifically, the preparation method of the high-temperature alloy wire rod for improving the yield of the high-temperature alloy rivet comprises the following steps:
A. after surface treatment is carried out on a high-temperature alloy initial wire rod with the diameter of phi 8.0-12.0 mm, solution annealing treatment is carried out under the protection of inert gas, and then a fixed die single drawing machine is used for drawing and reducing the diameter to phi 6.5 +/-0.2 mm;
B. then reducing the diameter of the wire rod which is drawn and reduced to phi 6.5 +/-0.2 mm to the specification that the specification of phi 2.4mm is less than or equal to the specification of phi 6.3mm by using a continuous-drawing type roller mode wire drawing machine to obtain a high-temperature alloy wire rod;
wherein, in the step A: when the diameter phi of the initial wire rod is less than 10.2mm and less than or equal to 12.0mm, respectively reducing the diameter to phi 10.0 +/-0.2 mm, reducing the diameter to phi 8.0 +/-0.2 mm and reducing the diameter to phi 6.5 +/-0.2 mm by drawing, and then carrying out solution treatment under the protection of inert gas; when the diameter phi of 8.2mm < the initial wire rod is less than or equal to 10.2mm, respectively reducing the diameter to 8.0 +/-0.2 mm and reducing the diameter to 6.5 +/-0.2 mm, and then carrying out solution annealing treatment under the protection of inert gas; when the initial wire rod with the diameter phi of 8.0mm or less is less than or equal to 8.2mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 6.5 +/-0.2 mm;
in the step B: when the diameter phi is less than or equal to 2.4mm and the obtained high-temperature alloy wire rod is less than 4.6mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 4.8 +/-0.2 mm;
and cooling the wire by using a cooling liquid in the reducing process of the steps A and B.
In the step A of the method, a high-temperature alloy wire rod with the diameter of 8.0-12.0 mm produced on a straight-advancing high-speed wire rod rolling mill is used as an initial wire rod, and the grades of the alloy wire rod can be selected from GH4169, GH3030, INCONEL625, INCOLOY825 and the like. The incoming material state of the initial wire rod determines the surface quality of subsequent wire rod processing, so that the incoming material surface is required to be in an acid-washing state, and the surface is required to have no defects such as burrs, pits, scratches, cracks and the like; therefore, the wire surface is trimmed by using a grinding mode.
Because the open end surface of the mold inlet is in the shape of a bell mouth, the mold inlet is preferably tapered in order not to damage the mold. Therefore, in the step A, one end of the initial wire rod is made to be conical, the conicity is 50-70 degrees, and the conical end of the initial wire rod enters the fixed die single drawing machine.
Because the material has the deformation limit, the problem that the wire breakage and the like can be caused by the fact that the diameter is reduced beyond the denaturation limit is solved, based on the research on the work hardening of the wire, the invention designs a specific solution annealing treatment procedure for the initial wire and the target wire with different specifications, and the deformation plasticity of the wire is exerted to the maximum so as to ensure the quality of the obtained high-temperature alloy wire; meanwhile, the solid solution annealing treatment is carried out, so that the wire rod is in a solid solution annealing state, the defects of burrs, pits, scratches, cracks and the like on the surface of the wire rod are avoided in the diameter reducing process, and the surface state of the material is not damaged.
In the step A: when the diameter phi of the initial wire rod is less than 10.2mm and less than or equal to 12.0mm, respectively reducing the diameter to phi 10.0 +/-0.2 mm, reducing the diameter to phi 8.0 +/-0.2 mm and reducing the diameter to phi 6.5 +/-0.2 mm by drawing, and then carrying out solution treatment under the protection of inert gas; when the diameter phi of 8.2mm < the initial wire rod is less than or equal to 10.2mm, respectively reducing the diameter to 8.0 +/-0.2 mm and reducing the diameter to 6.5 +/-0.2 mm, and then carrying out solution annealing treatment under the protection of inert gas; when the initial wire rod with the diameter phi of 8.0mm or less is less than or equal to 8.2mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 6.5 +/-0.2 mm; in the step B: when the diameter is less than or equal to phi 2.4mm and the obtained high-temperature alloy wire rod is less than phi 4.6mm, the solution annealing treatment is carried out under the protection of inert gas when the diameter is reduced to phi 4.8 +/-0.2 mm. Examples are as follows:
taking an initial wire rod of phi 12.0mm and a target superalloy wire rod of phi 3.0mm as examples, the process is as follows: initial wire with the diameter phi of 12.0mm → solution treatment → drawing diameter reduction to the diameter phi of 10.0 +/-0.2 mm → solution treatment → drawing diameter reduction to the diameter phi of 8.0 +/-0.2 mm → solution treatment → drawing diameter reduction to the diameter phi of 6.5 +/-0.2 mm → solution treatment → diameter reduction to the diameter phi of 4.8 +/-0.2 mm → solution treatment → diameter reduction to the diameter phi of 3.0mm, and obtaining the target high-temperature alloy wire;
taking an initial wire rod of phi 8.0mm and a target superalloy wire rod of phi 5.0mm as examples, the process is as follows: initial wire with the diameter of 8.0mm → solution treatment → drawing diameter reduction to 6.5 +/-0.2 mm → solution treatment → diameter reduction to 5.0mm to obtain the target high-temperature alloy wire.
In order to ensure the uniform deformation of the surface deformation of the wire rod, the wire outlet speed when the single drawing machine with the fixed die is used for drawing is not more than 15m/min in the step A, and the wire outlet speed when the continuous drawing type roller mode drawing machine is used for reducing the diameter is not more than 1.5m/s in the step B.
The model of the single drawing machine with the fixed die is D800, the model of the continuous drawing type roller mode drawing machine is DZ560-6, and the model is also the conventional model in the field.
In the present invention, solution annealing treatment is performed once or more times according to the wire rod specification, and the conditions of solution annealing treatment at each stage may be the same or different, and may be within the scope of the present invention. The solution annealing treatment conditions are as follows: heating the wire (generally in a room temperature state after reducing the diameter) to 1060-1080 ℃, keeping the temperature for 30-60 min, and then cooling the wire to the room temperature along with the furnace. The solution annealing treatment is preferably performed in nitrogen gas having a purity of more than 99.99%.
In the drawing and reducing processes of the step A and the step B, cooling liquid is needed to cool the wire, and the temperature of the cooling liquid is controlled to be not more than 60 ℃ in order to guarantee the service life of equipment and the quality of the target high-temperature alloy wire. Water or a water-soluble cutting fluid can be used as the cooling fluid.
The water-soluble cutting fluid consists of an extreme pressure agent, an antirust agent, mineral oil and various surfactants, has the lubricating property and extreme pressure property of emulsified oil, and has the environmental protection performance, excellent cleaning performance, long service cycle and other performances of the synthetic cutting fluid; the problems that the quality of a final finished product is affected due to the fact that the surface of the wire rod is oxidized and lubricated poorly and scratches occur on the surface of the wire rod and the like due to poor cooling can be solved; therefore, the coolant is preferably a water-soluble cutting fluid.
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1: GH4169 wire prepared by adopting the method
A. Carrying out surface treatment on an initial phi 12.0mmGH4169 wire rod produced on a straight-moving high-speed wire rod rolling mill in a polishing mode, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then one end of the initial wire with the taper of 60 degrees enters a fixed die single drawing machine, is drawn and reduced to phi 10.0mm at the wire outlet speed of 5m/min, and then is subjected to solution annealing treatment under the protection of 99.99 percent nitrogen; then continuously drawing and reducing the diameter to phi 8.0mm at the wire outlet speed of 5m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then continuously drawing and reducing the diameter to phi 6.5mm at the wire outlet speed of 8m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen;
B. reducing the diameter of the wire rod with the diameter of 6.5mm after the solution annealing treatment to the wire rod with the diameter of 4.8mm at the wire outlet speed of 1m/s by using a continuous-drawing roller mode wire drawing machine, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then continuing reducing the diameter to phi 4.0mm at the outgoing speed of 1m/s to obtain a GH4169 high-temperature alloy wire;
wherein the solution annealing treatment conditions in each stage are as follows: keeping the temperature at 1070 ℃ for 45min, and then cooling along with the furnace;
during the reducing process of step A and step B, the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 60 ℃.
Example 2: GH3030 wire rod prepared by adopting the method
A. Carrying out surface treatment on an initial wire rod with the diameter of 12.0mmGH3030 produced on a straight-moving high-speed wire rod rolling mill in a polishing mode, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then one end of the initial wire with the taper of 60 degrees enters a fixed die single drawing machine, is drawn and reduced to phi 10.0mm at the wire outlet speed of 8m/min, and then is subjected to solution annealing treatment under the protection of 99.99 percent nitrogen; then continuously drawing and reducing the diameter to phi 8.0mm at the wire outlet speed of 8m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then continuously drawing and reducing the diameter to phi 6.5mm at the wire outlet speed of 8m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen;
B. reducing the diameter of the wire rod with the diameter of 6.5mm after the solution annealing treatment to the wire rod with the diameter of 4.8mm at the wire outlet speed of 1.3m/s by using a continuous-drawing roller mode wire drawing machine, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then, continuously reducing the diameter to phi 3.2mm at the outgoing line speed of 1.3m/s to obtain a GH3030 high-temperature alloy wire rod;
wherein the solution annealing treatment conditions in each stage are as follows: keeping the temperature at 1070 ℃ for 45min, and then cooling along with the furnace;
during the reducing process of step A and step B, the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 60 ℃.
Example 3: the INCONEL625 wire prepared by the invention
A. Carrying out surface treatment on a phi 12.0mm INCONEL625 initial wire rod produced on a straight-moving high-speed wire rod rolling mill in a polishing mode, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then one end of the initial wire with the taper of 60 degrees enters a fixed die single drawing machine, is drawn and reduced to phi 10.0mm at the wire outlet speed of 10m/min, and then is subjected to solution annealing treatment under the protection of 99.99 percent nitrogen; then continuously drawing and reducing the diameter to phi 8.0mm at the wire outlet speed of 10m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then continuously drawing and reducing the diameter to phi 6.5mm at the wire outlet speed of 10m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen;
B. reducing the diameter of the wire rod with the diameter of 6.5mm after the solution annealing treatment to the wire rod with the diameter of 4.8mm at the wire outlet speed of 1m/s by using a continuous-drawing roller mode wire drawing machine, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then, continuously reducing the diameter to phi 2.4mm at the outgoing line speed of 1m/s to obtain an INCONEL625 high-temperature alloy wire;
wherein the solution annealing treatment conditions in each stage are as follows: keeping the temperature at 1070 ℃ for 45min, and then cooling along with the furnace;
during the reducing process of step A and step B, the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 60 ℃.
Example 4: the INCONEL625 wire prepared by the invention
A. Carrying out surface treatment on a phi 11.0mm INCONEL625 initial wire rod produced on a straight-moving high-speed wire rod rolling mill in a polishing mode, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then one end of the initial wire with the taper of 60 degrees enters a fixed die single drawing machine, is drawn and reduced to phi 10.0mm at the wire outlet speed of 10m/min, and then is subjected to solution annealing treatment under the protection of 99.99 percent nitrogen; then continuously drawing and reducing the diameter to phi 8.0mm at the wire outlet speed of 10m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then continuously drawing and reducing the diameter to phi 6.5mm at the wire outlet speed of 10m/min, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen;
B. reducing the diameter of the wire rod with the diameter of 6.5mm after the solution annealing treatment to the wire rod with the diameter of 4.8mm at the wire outlet speed of 1.4m/s by using a continuous-drawing roller mode wire drawing machine, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then, continuously reducing the diameter to phi 3.8mm at the outgoing line speed of 1.4m/s to obtain an INCONEL625 high-temperature alloy wire;
wherein the solution annealing treatment conditions in each stage are as follows: keeping the temperature at 1070 ℃ for 45min, and then cooling along with the furnace;
during the reducing process of step A and step B, the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 60 ℃.
Example 5: the INCOLOY825 wire prepared by the invention
A. Carrying out surface treatment on an initial phi 8.1mm INCOLOY825 wire rod produced on a straight-moving high-speed wire rod rolling mill in a polishing mode, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then one end of the initial wire with the taper of 60 degrees enters a fixed die single drawing machine, is drawn and reduced to phi 6.5mm at the wire outlet speed of 14m/min, and then is subjected to solution annealing treatment under the protection of 99.99 percent nitrogen;
B. reducing the diameter of the wire rod with the diameter of 6.5mm after the solution annealing treatment to the wire rod with the diameter of 4.8mm at the wire outlet speed of 1.4m/s by using a continuous-drawing roller mode wire drawing machine, and then carrying out solution annealing treatment under the protection of 99.99% nitrogen; then, continuously reducing the diameter to phi 3.0mm at the outgoing speed of 1.4m/s to obtain an INCOLOY825 high-temperature alloy wire;
wherein the solution annealing treatment conditions in each stage are as follows: keeping the temperature at 1070 ℃ for 45min, and then cooling along with the furnace;
during the reducing process of step A and step B, the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 60 ℃.
The finished wire prepared in the embodiments 1-5 meets the use characteristic requirements of the high-temperature alloy rivet; wherein, the finished wire rod of the embodiment 1 is adopted, and the yield of the high-temperature alloy rivet is 91%; the finished wire rod of the embodiment 2 is adopted, and the yield of the high-temperature alloy rivet is 92%; the finished wire rod of the example 3 is adopted, and the yield of the high-temperature alloy rivet is 92%; the finished wire rod of the example 4 is adopted, and the yield of the high-temperature alloy rivet is 94%; the yield of the superalloy rivets was 91% using the finished wire of example 5. Therefore, the method for preparing the high-temperature alloy wire can improve the yield of the conventional high-temperature alloy rivet from about 60 percent to over 90 percent, thereby not only reducing the cost, but also improving the efficiency.
Claims (11)
1. The preparation method of the high-temperature alloy wire for improving the yield of the high-temperature alloy rivet is characterized by comprising the following steps of: the method comprises the following steps:
A. after surface treatment is carried out on a high-temperature alloy initial wire rod with the diameter of phi 8.0-12.0 mm, solution annealing treatment is carried out under the protection of inert gas, and then a fixed die single drawing machine is used for drawing and reducing the diameter to phi 6.5 +/-0.2 mm;
B. then reducing the diameter of the wire rod which is drawn and reduced to phi 6.5 +/-0.2 mm to phi 2.4mm which is not more than the specification of phi 6.3mm by using a continuous-drawing type roller mode wire drawing machine to obtain a high-temperature alloy wire rod;
wherein, in the step A: when the diameter phi of the initial wire rod is less than 10.2mm and less than or equal to 12.0mm, respectively reducing the diameter to phi 10.0 +/-0.2 mm, reducing the diameter to phi 8.0 +/-0.2 mm and reducing the diameter to phi 6.5 +/-0.2 mm by drawing, and then carrying out solution treatment under the protection of inert gas; when the diameter phi of 8.2mm < the initial wire rod is less than or equal to 10.2mm, respectively reducing the diameter to 8.0 +/-0.2 mm and reducing the diameter to 6.5 +/-0.2 mm, and then carrying out solution annealing treatment under the protection of inert gas; when the initial wire rod with the diameter phi of 8.0mm or less is less than or equal to 8.2mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 6.5 +/-0.2 mm;
in the step B: when the diameter phi is less than or equal to 2.4mm and the obtained high-temperature alloy wire rod is less than 4.6mm, carrying out solution annealing treatment under the protection of inert gas when the diameter is reduced to 4.8 +/-0.2 mm;
and cooling the wire by using a cooling liquid in the reducing process of the steps A and B.
2. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 1, wherein: in the step A, the surface of the high-temperature alloy initial wire rod with the diameter of 8.0-12.0 mm is in an acid pickling state; and the surface is treated by adopting a polishing mode, so that the surface has no burrs, pits, scratches and crack defects.
3. A method of producing a superalloy wire for increasing the yield of a superalloy rivet according to claim 1 or 2, wherein: in the step A, one end of the phi 8.0-12.0 mm high-temperature alloy initial wire rod is conical, and the taper is 50-70 degrees.
4. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 1, wherein: in the step A, the wire outlet speed is not more than 15m/min when the fixed die single drawing machine is used for drawing and reducing the diameter.
5. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 1, wherein: and in the step B, the wire outlet speed is not more than 1.5m/s when the continuous drawing type roller mode wire drawing machine is used for reducing the diameter.
6. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 1, wherein: the inert gas is nitrogen with the purity of more than 99.99 percent.
7. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 1, wherein: the conditions of the solution annealing treatment are as follows: heating the wire to 1060-1080 ℃, keeping the temperature for 30-60 min, and then cooling the wire to room temperature along with the furnace.
8. A method for preparing a superalloy wire for increasing yield of a superalloy rivet according to any of claims 1-2 or 4-7, comprising: the cooling liquid is water or water-soluble cutting fluid.
9. A method of making a superalloy wire for increasing yield in a superalloy rivet according to claim 3, wherein: the cooling liquid is water or water-soluble cutting fluid.
10. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 8, wherein: the cooling liquid is water-soluble cutting fluid; and in the cooling process, controlling the temperature of the water-soluble cutting fluid not to exceed 60 ℃.
11. A method of making a superalloy wire for increasing yield in a superalloy rivet as in claim 9, wherein: the cooling liquid is water-soluble cutting fluid; and in the cooling process, controlling the temperature of the water-soluble cutting fluid not to exceed 60 ℃.
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| CN112176223B (en) * | 2020-09-03 | 2022-01-28 | 太原钢铁(集团)有限公司 | Method for controlling performance of nickel-based alloy wire |
| CN112518230A (en) * | 2020-11-30 | 2021-03-19 | 贵州精立航太科技有限公司 | Processing technology of high-temperature-resistant alloy core rod breaking groove of self-plugging rivet |
| CN115555806A (en) * | 2022-10-14 | 2023-01-03 | 成都先进金属材料产业技术研究院股份有限公司 | Wire rod preparation method capable of improving stainless steel rivet yield |
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