CN104907351B - Strengthened and toughened stainless steel wire for oil filter screens, and making technology thereof - Google Patents

Abstract

The invention discloses a strong and tough stainless steel wire for an oil filter net and a manufacturing process thereof. The chemical composition and mass percentage of the selected alloy blank are: Cr: 12.14-12.16%, Ni: 2.26-2.28%, C: 0.05-0.09% , Mo: 0.45‑0.65%, Cu: 0.87‑0.89%, Al: 3.46‑3.52%, W: 0.32‑0.36%, Si: 0.271‑0.273%, Mn: 3.84‑3.88%, Nb: 0.92‑0.94%, Ti: 1.08-1.18%, Se: 0.105-0.125%, and the rest are Fe and unavoidable impurities; the invention has simple process, scientific and reasonable design, and the process is safe and environment-friendly, and no pollutants are produced. The product has good toughness, high strength, High temperature resistance, not easy to corrode, long service life.

Description

A kind of tough stainless steel wire for oil filter and its manufacturing process

technical field

The invention belongs to the technical field of hydraulic equipment, in particular to a tough stainless steel wire for an oil filter and a manufacturing process thereof.

Background technique

The valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow relief. In terms of technical support for valve production and R&D, domestic valves are not lagging behind foreign valves. On the contrary, many products are already comparable to international companies in technology and innovation. The development of the domestic valve industry is moving in the direction of high-end modernization.

Driven by the four major forces of industrialization, urbanization, reform and globalization, the prospect of my country's valve equipment manufacturing industry is still broad. In the future, the high-end, localization and modernization of the valve industry will be the main direction for the development of the valve industry in the future. Pursue continuous innovation and create new markets for valve companies, so that companies can survive and develop in the increasingly competitive tide of the pump and valve industry. With the continuous development of valve technology and the continuous expansion of valve application fields, the corresponding valve standards are becoming more and more indispensable. Products in the valve industry have entered a period of innovation. Not only product categories need to be updated, but internal management of enterprises also needs to deepen reforms according to industry standards. Therefore, it is necessary to look forward to the future while making full use of existing standards, and research new standards and new systems that can be applied in the future, so as to promote the development of valve technology at a higher level.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a strong stainless steel wire for oil filter and its manufacturing process. The present invention has simple process, scientific and reasonable design, and the process is safe and environmentally friendly without pollutants. Produced, this product has good toughness, high strength, high temperature resistance, not easy to corrode, and long service life.

In order to solve the above technical problems, the present invention provides a kind of tough stainless steel wire for oil filter and its manufacturing process, including the following process:

Select a suitable alloy blank, its chemical composition and mass percentage are: Cr: 12.14-12.16%, Ni: 2.26-2.28%, C: 0.05-0.09%, Mo: 0.45-0.65%, Cu: 0.87-0.89%, Al : 3.46-3.52%, W: 0.32-0.36%, Si: 0.271-0.273%, Mn: 3.84-3.88%, Nb: 0.92-0.94%, Ti: 1.08-1.18%, Se: 0.105-0.125%, and the rest are Fe and unavoidable impurities;

Put the alloy billet in the furnace and heat it to 860-920°C for 20-22 minutes, then lower the temperature to 630-650°C for 15-18 minutes, then water-cool the alloy billet to 290-310°C , and then air-cooled to room temperature, and remove iron oxide scale;

Dry the alloy billet under the protection of nitrogen, and carry out phosphating treatment;

Heat the treated alloy billet to 930-950°C, keep it warm for 60-75min, then lower the temperature to 680-700°C, keep it warm for 45-60min, and then use water cooling-air cooling to cool alternately: first, at 5-7°C/s Speed water cooling to 520-530°C, then air cooling to 370-390°C, then water cooling to room temperature at a speed of 1-3°C/s;

Draw the treated alloy billet and draw it with a rotary die. First, draw the alloy billet into a thick steel wire, then heat the thick steel wire to 460-480°C, keep it warm for 30-40min, and then cool it down to 110-130°C through oil cooling , and then use ultrasonic drawing to draw the alloy billet into fine steel wire, and the ultrasonic frequency is 18-22kHz;

The surface of the drawn thin steel wire is coated with aluminum, the thickness of the coating is 20-50nm, and finally it is wound and put into storage.

The beneficial effects of the present invention are:

The alloy blank selected by the present invention contains a large amount of trace elements, among which: carbon, which improves the yield point and tensile strength; silicon, as a reducing agent and deoxidizer, can significantly improve the elastic limit, yield point and tensile strength of steel; Combined with molybdenum, tungsten, chromium, etc., it has the effect of improving corrosion resistance and oxidation resistance; manganese is a good deoxidizer and desulfurizer, which makes steel not only have sufficient toughness, but also has high strength and hardness, improving steel The hardenability of steel can improve the hot working performance of steel and wear resistance; chromium can significantly improve the strength, hardness and wear resistance, and improve the oxidation resistance and corrosion resistance of steel; nickel, nickel can improve the strength of steel, and It also maintains good plasticity and toughness, has high corrosion resistance to acid and alkali, and has antirust and heat resistance at high temperatures; molybdenum can refine the grains of steel, improve hardenability and thermal strength, Maintain sufficient strength and creep resistance at high temperatures and improve mechanical properties; titanium, titanium is a strong deoxidizer in steel, which can make the internal structure of steel dense, refine grain strength, reduce aging sensitivity and cold brittleness, and improve Welding performance, avoiding intergranular corrosion; tungsten, tungsten and carbon form tungsten carbide, which has high hardness and wear resistance; niobium, niobium can refine grains and reduce the overheating sensitivity and temper brittleness of steel, improve strength, and at the same time It can improve the resistance to atmospheric corrosion and hydrogen, nitrogen, and ammonia corrosion at high temperature, improve welding performance, and prevent intergranular corrosion; the invention has simple process, scientific and reasonable design, and the process is safe and environmentally friendly, no pollutants are produced, and the product has toughness Good, high strength, high temperature resistance, not easy to corrode, long service life.

detailed description

Example 1

This embodiment provides a kind of tough stainless steel wire for oil filter and its manufacturing process, including the following process:

Select a suitable alloy blank, its chemical composition and mass percentage are: Cr: 12.14%, Ni: 2.26%, C: 0.05%, Mo: 0.45%, Cu: 0.87%, Al: 3.46%, W: 0.32%, Si : 0.271%, Mn: 3.84%, Nb: 0.92%, Ti: 1.08%, Se: 0.105%, the rest are Fe and unavoidable impurities;

Put the alloy billet in the furnace and heat it to 860°C for 22 minutes, then lower the temperature to 630°C for 18 minutes, then water-cool the alloy billet to 290°C, then air cool to room temperature, and remove the scale ;

Dry the alloy billet under the protection of nitrogen, and carry out phosphating treatment;

Heat the treated alloy billet to 930°C, keep it warm for 75 minutes, then lower the temperature to 680°C, keep it warm for 60 minutes, and then use water cooling-air cooling to cool alternately: first, water cooling to 520°C at a speed of 5°C/s, and then air cooling to 370°C °C, and then water cooled to room temperature at a rate of 1 °C/s;

The processed alloy billet is drawn, and the alloy billet is drawn by a rotary die. First, the alloy billet is drawn into a thick steel wire, and then the thick steel wire is heated to 460 ° C, kept for 40 minutes, and then cooled to 110 ° C by oil cooling, and then ultrasonically drawn. The alloy billet is drawn into thin steel wire, and the ultrasonic frequency is 18kHz;

The surface of the drawn thin steel wire is coated with aluminum, the thickness of the coating is 20nm, and finally it is wound and put into storage.

Example 2

This embodiment provides a kind of tough stainless steel wire for oil filter and its manufacturing process, including the following process:

Select a suitable alloy blank, its chemical composition and mass percentage are: Cr: 12.16%, Ni: 2.28%, C: 0.09%, Mo: 0.65%, Cu: 0.89%, Al: 3.52%, W: 0.36%, Si : 0.273%, Mn: 3.88%, Nb: 0.94%, Ti: 1.18%, Se: 0.125%, the rest are Fe and unavoidable impurities;

Put the alloy billet in the furnace and heat it to 920°C for 20 minutes, then lower the temperature to 650°C for 15 minutes, then water-cool the alloy billet to 310°C, then air cool to room temperature, and remove the scale ;

Dry the alloy billet under the protection of nitrogen, and carry out phosphating treatment;

Heat the treated alloy billet to 950°C, keep it warm for 60 minutes, then lower the temperature to 700°C, keep it warm for 45 minutes, and then use water cooling-air cooling to alternately cool: first, water cooling to 530°C at a speed of 7°C/s, and then air cooling to 390°C ℃, and then water cooled to room temperature at a rate of 3℃/s;

The treated alloy billet is drawn, and the alloy billet is drawn by a rotary die. First, the alloy billet is drawn into a thick steel wire, and then the thick steel wire is heated to 480 ° C, kept for 30 minutes, and then cooled to 130 ° C by oil cooling, and then ultrasonically drawn. The alloy billet is drawn into fine steel wire, and the ultrasonic frequency is 22kHz;

The surface of the drawn thin steel wire is coated with aluminum, the thickness of the coating is 50nm, and finally it is wound and put into storage.

Example 3

This embodiment provides a kind of tough stainless steel wire for oil filter and its manufacturing process, including the following process:

Select a suitable alloy blank, its chemical composition and mass percentage are: Cr: 12.15%, Ni: 2.27%, C: 0.07%, Mo: 0.55%, Cu: 0.88%, Al: 3.48%, W: 0.34%, Si : 0.272%, Mn: 3.86%, Nb: 0.93%, Ti: 1.14%, Se: 0.115%, the rest is Fe and unavoidable impurities;

Put the alloy billet in a furnace and heat it to 890°C for 21 minutes, then lower the temperature to 640°C for 16 minutes, then water cool the alloy billet to 300°C, then air cool to room temperature, and remove the scale ;

Dry the alloy billet under the protection of nitrogen, and carry out phosphating treatment;

Heat the treated alloy billet to 940°C, keep it warm for 68 minutes, then lower the temperature to 690°C, keep it warm for 52 minutes, and then use water cooling-air cooling to cool alternately: first, water cooling to 530°C at a speed of 6°C/s, and then air cooling to 380°C ℃, and then water cooled to room temperature at a rate of 2℃/s;

The treated alloy billet is drawn, and the alloy billet is drawn by a rotary die. First, the alloy billet is drawn into a thick steel wire, and then the thick steel wire is heated to 470 ° C, kept for 35 minutes, and then cooled to 120 ° C by oil cooling, and then ultrasonically drawn. The alloy billet is drawn into fine steel wire, and the ultrasonic frequency is 20kHz;

The surface of the drawn thin steel wire is coated with aluminum, the thickness of the coating is 40nm, and finally wound into storage.

The above embodiments are only to illustrate the technical ideas of the present invention, and can not limit the protection scope of the present invention with this. All technical ideas proposed in accordance with the present invention, any changes made on the basis of technical solutions, all fall within the protection scope of the present invention. Inside.

Claims (4)

1. a kind of oil cleaner screen with the manufacturing process of tough stainless steel silk it is characterised in that include following technical process:

Select suitable alloy blank, its chemical composition and mass percent are: cr:12.14-12.16%, ni:2.26- 2.28%, c:0.05-0.09%, mo:0.45-0.65%, cu:0.87-0.89%, al:3.46-3.52%, w:0.32- 0.36%, si:0.271-0.273%, mn:3.84-3.88%, nb:0.92-0.94%, ti:1.08-1.18%, se: 0.105-0.125%, remaining is fe and inevitable impurity；

Alloy blank is placed in stove and is heated to 860-920 DEG C and is forged, the time is 20-22min, then temperature is reduced to 630-650 DEG C is forged, and the time is 15-18min, then by alloy blank water-cooled to 290-310 DEG C, then is air cooled to room temperature, And remove iron scale；

Alloy blank is dried under nitrogen protection, and carries out bonderizing；

Alloy blank after processing is heated to 930-950 DEG C, is incubated 60-75min, then temperature is reduced to 680-700 DEG C, Insulation 45-60min, then adopts water-cooled-air cooling to be alternately cooled: first with the speed water-cooled of 5-7 DEG C/s to 520-530 DEG C more empty It is cooled to 370-390 DEG C, then with the speed water-cooled of 1-3 DEG C/s to room temperature；

Alloy blank after processing is carried out drawing, using rotation die wire drawing, first alloy blank is pulled into thicker wire, then will be thick Steel wire heating, to 460-480 DEG C, is incubated 30-40min, is then passed through oil cooling and is cooled to 110-130 DEG C, then adopts ultrasonic drawing Alloy blank is pulled into finer wire, ultrasonic frequency is 18-22khz；

Aluminized in finer wire surface after drawing, thickness of coating is 20-50nm, last coiling warehouse-in.

2. oil cleaner screen according to claim 1 with the manufacturing process of tough stainless steel silk it is characterised in that include following work Skill process:

Select suitable alloy blank, its chemical composition and mass percent are: cr:12.14%, ni:2.26%, c: 0.05%, mo:0.45%, cu:0.87%, al:3.46%, w:0.32%, si:0.271%, mn:3.84%, nb:0.92%, Ti:1.08%, se:0.105%, remaining is fe and inevitable impurity；

Alloy blank is placed in stove and is heated to 860 DEG C and is forged, the time is 22min, then temperature is reduced to 630 DEG C and carry out Forging, the time is 18min, then by alloy blank water-cooled to 290 DEG C, then is air cooled to room temperature, and removes iron scale；

Alloy blank is dried under nitrogen protection, and carries out bonderizing；

Alloy blank after processing is heated to 930 DEG C, is incubated 75min, then temperature is reduced to 680 DEG C, be incubated 60min, Then adopt water-cooled-air cooling to be alternately cooled: first with the speed water-cooled of 5 DEG C/s to 520 DEG C, then be air cooled to 370 DEG C, then with 1 DEG C/ The speed water-cooled of s is to room temperature；

Alloy blank after processing is carried out drawing, using rotation die wire drawing, first alloy blank is pulled into thicker wire, then will be thick Steel wire heating, to 460 DEG C, is incubated 40min, is then passed through oil cooling and is cooled to 110 DEG C, then using ultrasonic drawing by alloy blank Pull into finer wire, ultrasonic frequency is 18khz；

Aluminized in finer wire surface after drawing, thickness of coating is 20nm, last coiling warehouse-in.

3. oil cleaner screen according to claim 1 with the manufacturing process of tough stainless steel silk it is characterised in that include following work Skill process:

Select suitable alloy blank, its chemical composition and mass percent are: cr:12.16%, ni:2.28%, c: 0.09%, mo:0.65%, cu:0.89%, al:3.52%, w:0.36%, si:0.273%, mn:3.88%, nb:0.94%, Ti:1.18%, se:0.125%, remaining is fe and inevitable impurity；

Alloy blank is placed in stove and is heated to 920 DEG C and is forged, the time is 20min, then temperature is reduced to 650 DEG C and carry out Forging, the time is 15min, then by alloy blank water-cooled to 310 DEG C, then is air cooled to room temperature, and removes iron scale；

Alloy blank is dried under nitrogen protection, and carries out bonderizing；

Alloy blank after processing is heated to 950 DEG C, is incubated 60min, then temperature is reduced to 700 DEG C, be incubated 45min, Then adopt water-cooled-air cooling to be alternately cooled: first with the speed water-cooled of 7 DEG C/s to 530 DEG C, then be air cooled to 390 DEG C, then with 3 DEG C/ The speed water-cooled of s is to room temperature；

Alloy blank after processing is carried out drawing, using rotation die wire drawing, first alloy blank is pulled into thicker wire, then will be thick Steel wire heating, to 480 DEG C, is incubated 30min, is then passed through oil cooling and is cooled to 130 DEG C, then using ultrasonic drawing by alloy blank Pull into finer wire, ultrasonic frequency is 22khz；

Aluminized in finer wire surface after drawing, thickness of coating is 50nm, last coiling warehouse-in.

4. oil cleaner screen according to claim 1 with the manufacturing process of tough stainless steel silk it is characterised in that include following work Skill process:

Select suitable alloy blank, its chemical composition and mass percent are: cr:12.15%, ni:2.27%, c: 0.07%, mo:0.55%, cu:0.88%, al:3.48%, w:0.34%, si:0.272%, mn:3.86%, nb:0.93%, Ti:1.14%, se:0.115%, remaining is fe and inevitable impurity；

Alloy blank is placed in stove and is heated to 890 DEG C and is forged, the time is 21min, then temperature is reduced to 640 DEG C and carry out Forging, the time is 16min, then by alloy blank water-cooled to 300 DEG C, then is air cooled to room temperature, and removes iron scale；

Alloy blank is dried under nitrogen protection, and carries out bonderizing；

Alloy blank after processing is heated to 940 DEG C, is incubated 68min, then temperature is reduced to 690 DEG C, be incubated 52min, Then adopt water-cooled-air cooling to be alternately cooled: first with the speed water-cooled of 6 DEG C/s to 530 DEG C, then be air cooled to 380 DEG C, then with 2 DEG C/ The speed water-cooled of s is to room temperature；

Alloy blank after processing is carried out drawing, using rotation die wire drawing, first alloy blank is pulled into thicker wire, then will be thick Steel wire heating, to 470 DEG C, is incubated 35min, is then passed through oil cooling and is cooled to 120 DEG C, then using ultrasonic drawing by alloy blank Pull into finer wire, ultrasonic frequency is 20khz；

Aluminized in finer wire surface after drawing, thickness of coating is 40nm, last coiling warehouse-in.