阅读说明：本技术 一种合金钢材料及其钢板材加工铸造工艺 (Alloy steel material and steel plate processing and casting technology thereof ) 是由 陈丽容 于 2020-06-07 设计创作，主要内容包括：本发明公开了一种合金钢材料,由以下成分组成：碳：0.03％-2.0％,铬：15％-20％,钨：0.9％-1.4％,锰：0.8％-1.5％,硅：0.6％-1.0％,钼：2％-4％,镍：0.9％-1.4％,钒：10％-15％,余量为铁,一种钢板材加工铸造工艺,S1：热熔熟铁；S2：依次投入其他金属；S3：再添加辅助添加剂；S4：将金属溶液冷却；S5：对钢板进行再热锻；S6：对钢板进行最后处理；本发明在合金钢中添加各种金属元素能够增大抗腐蚀性、耐磨性和强度,采用的时候熟铁,使得铁中的杂质含量底,碳元素采用的是石墨,使得合金钢不会造成晶孔问题,采用热锻机进行再锻造,钢板能够更加的精细,在合金钢板进行电镀和酸化处理,形成氧化膜,防止腐蚀氧化。(The invention discloses an alloy steel material which comprises the following components: carbon: 0.03% -2.0%, chromium: 15% -20%, tungsten: 0.9% -1.4%, manganese: 0.8% -1.5%, silicon: 0.6% -1.0%, molybdenum: 2% -4%, nickel: 0.9% -1.4%, vanadium: 10% -15%, the balance being iron, a steel sheet processing and casting process, S1: hot melting of the wrought iron; s2: sequentially adding other metals; s3: then adding auxiliary additives; s4: cooling the metal solution; s5: carrying out hot forging on the steel plate again; s6: carrying out final treatment on the steel plate; according to the invention, various metal elements are added into the alloy steel, so that the corrosion resistance, the wear resistance and the strength can be improved, the impurity content in iron is low due to the adoption of the wrought iron, the problem of crystal holes in the alloy steel can not be caused due to the adoption of the graphite as the carbon element, the steel plate can be finer due to the adoption of the re-forging by using the hot forging machine, and an oxidation film is formed on the alloy steel plate by electroplating and acidizing, so that the corrosion and oxidation are prevented.)

1. The alloy steel material is characterized by comprising the following chemical components in percentage by weight: carbon: 0.03% -2.0%, chromium: 15% -20%, tungsten: 0.9% -1.4%, manganese: 0.8% -1.5%, silicon: 0.6% -1.0%, molybdenum: 2% -4%, nickel: 0.9% -1.4%, phosphorus: 0.006% -0.01%, vanadium: 10% -15%, copper: 3% -6%, auxiliary additives: 0.265-0.46 percent of iron and the balance of iron.

2. A steel alloy material according to claim 1, wherein: the auxiliary additive comprises boron, hafnium and sulfur, and the proportion of the boron, the hafnium and the sulfur is 2:2: 6.

3. A steel alloy material according to claim 1, wherein: the carbon is graphite, and the particle diameter of the graphite is controlled to be 0.1-1 mm.

4. A steel alloy material according to claim 1, wherein: the iron is prepared from cooked iron, and the impurity content in the cooked iron is controlled to be between 2 and 5 percent.

5. A steel plate machining and casting process is characterized in that: the specific processing and casting steps are as follows:

s1: hot melting of the cooked iron: putting the cooked iron into a vacuum smelting furnace for smelting, then heating and melting to obtain molten cooked molten iron, and then putting carbon into the vacuum smelting furnace for melting;

S2: sequentially adding other metals: and then mixing the components of chromium: 15% -20%, tungsten: 0.9% -1.4%, manganese: 0.8% -1.5%, silicon: 0.6% -1.0%, molybdenum: 2% -4%, nickel: 0.9% -1.4%, phosphorus: 0.006% -0.01%, vanadium: 10% -15%, copper: 3-6% of the raw materials are sequentially put into a vacuum smelting furnace for melting and mixing;

s3: and adding auxiliary additives: adding the ratio of boron in the auxiliary additive: 0.035 to 0.055%, hafnium: 0.03-0.05%, sulfur: 0.2-0.4 percent of the raw materials are sequentially added into a vacuum smelting furnace for melting and mixing;

s4: cooling the metal solution: discharging the metal solution in the vacuum smelting furnace, discharging the metal solution in a cooling tank for casting, and then cooling the metal solution to be molded;

s5: and (3) carrying out hot forging on the steel plate: placing the steel plate on a hot rolling mill for hot rolling forging, and then annealing the hot-rolled steel plate;

s6: and (3) carrying out final treatment on the steel plate: the steel plate is electroplated with chromium or zinc, and then the surface of the alloy steel is acidified to form an oxide film.

6. The steel plate machining and casting process according to claim 5, wherein the steel plate machining and casting process comprises the following steps: the temperature in the vacuum smelting furnace in the S1 is 1200-1300 ℃, and the hot melting time in the S1 is controlled to be 10-30 min.

7. The steel plate machining and casting process according to claim 5, wherein the steel plate machining and casting process comprises the following steps: the cooling temperature of the hot-melt metal in the S4 is 10-20 ℃, and the cooling time is controlled to be 30-60 min.

8. The steel plate machining and casting process according to claim 5, wherein the steel plate machining and casting process comprises the following steps: the finishing temperature of the hot rolling mill in the S5 is 800-1000 ℃, and the hot rolling time of the hot rolling mill is 5-10 min.

9. The steel plate machining and casting process according to claim 5, wherein the steel plate machining and casting process comprises the following steps: the annealing in the S5 adopts a two-stage constant temperature annealing solution treatment process for annealing, wherein the annealing is carried out at 950-1050 ℃ firstly, the heat preservation is carried out for 1-2 hours, then the annealing is carried out at 750-800 ℃ and the heat preservation is carried out for 4-5 hours.

10. The steel plate machining and casting process according to claim 5, wherein the steel plate machining and casting process comprises the following steps: the electroplating Cr in the S6 controls a Cr film with the thickness of 0.08-0.12mm to be electroplated on the surface of the alloy steel, the electroplating solution contains CrO3250-300g/L, H2SO42.5-3.0g/L and Cr3-3.5g/L, and the current density is 5-10A/dm, the electroplating Zr controls a Zr film with the thickness of 0.05-0.08mm to be electroplated on the surface of the alloy steel, the electroplating solution contains Zr (NO3)4100-150g/L, TEA20-30g/L, and the current density is 6-8A/dm.

Technical Field

The invention belongs to the technical field of alloy steel production, and particularly relates to an alloy steel material and a steel plate processing and casting process thereof.

Background

The steel is a general term for iron-carbon alloys with a carbon content between 0.02% and 2.11% by mass. The chemical composition of the steel can vary greatly, and steels containing only carbon elements are called carbon steels (carbon steels) or ordinary steels; in actual production, steel often contains different alloying elements according to different applications, such as: manganese, nickel, vanadium, and the like. The history of steel application and research by mankind has been long, but until the 19 th century bainitic process was invented, steel production was a costly and inefficient task. Nowadays, steel is one of the most used materials in the world due to its inexpensive, reliable properties, and is an indispensable component in the construction industry, manufacturing industry, and people's daily life. It can be said that steel is the material basis of modern society, but various kinds of problems still exist in various kinds of steel alloys on the market.

Although the agricultural alloy steel material and the production process thereof disclosed in the publication No. CN110144530A solve the problems of low plasticity and toughness, easy decarburization during heating and coarse crystal grains, the prior alloy steel cannot prevent corrosion, the alloy steel is easy to generate pores during production, so that the surface is not uniform, the steel is easy to break during cutting or cutting, the toughness of the alloy steel is insufficient, and corrosion oxidation cannot be prevented, and the like, the method provides an alloy steel material and a steel plate processing and casting process thereof.

Disclosure of Invention

The invention aims to provide an alloy steel material and a steel plate processing and casting process thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an alloy steel material comprises the following chemical components in percentage by weight: carbon: 0.03% -2.0%, chromium: 15% -20%, tungsten: 0.9% -1.4%, manganese: 0.8% -1.5%, silicon: 0.6% -1.0%, molybdenum: 2% -4%, nickel: 0.9% -1.4%, phosphorus: 0.006% -0.01%, vanadium: 10% -15%, copper: 3% -6%, auxiliary additives: 0.265-0.46 percent of iron and the balance of iron.

Preferably, the auxiliary additive comprises boron, hafnium and sulfur, and the ratio of the boron, the hafnium and the sulfur is 2:2: 6.

Preferably, the carbon is graphite, and the particle diameter of the graphite is controlled to be between 0.1 and 1 mm.

Preferably, the iron is prepared from wrought iron, and the impurity content of the wrought iron is controlled to be between 2% and 5%.

A steel plate machining and casting process comprises the following specific machining and casting steps:

s1: hot melting of the cooked iron: putting the cooked iron into a vacuum smelting furnace for smelting, then heating and melting to obtain molten cooked molten iron, and then putting carbon into the vacuum smelting furnace for melting;

S2: sequentially adding other metals: and then mixing the components of chromium: 15% -20%, tungsten: 0.9% -1.4%, manganese: 0.8% -1.5%, silicon: 0.6% -1.0%, molybdenum: 2% -4%, nickel: 0.9% -1.4%, phosphorus: 0.006% -0.01%, vanadium: 10% -15%, copper: 3-6% of the raw materials are sequentially put into a vacuum smelting furnace for melting and mixing;

s3: and adding auxiliary additives: adding the ratio of boron in the auxiliary additive: 0.035 to 0.055%, hafnium: 0.03-0.05%, sulfur: 0.2-0.4 percent of the raw materials are sequentially added into a vacuum smelting furnace for melting and mixing;

s4: cooling the metal solution: discharging the metal solution in the vacuum smelting furnace, discharging the metal solution in a cooling tank for casting, and then cooling the metal solution to be molded;

s5: and (3) carrying out hot forging on the steel plate: placing the steel plate on a hot rolling mill for hot rolling forging, and then annealing the hot-rolled steel plate;

s6: and (3) carrying out final treatment on the steel plate: the steel plate is electroplated with chromium or zinc, and then the surface of the alloy steel is acidified to form an oxide film.

Preferably, the temperature in the vacuum smelting furnace in the S1 is 1200-1300 ℃, and the hot melting time in the S1 is controlled to be 10-30 min.

Preferably, the cooling temperature of the hot-melt metal in S4 is 10-20 ℃, and the cooling time is controlled between 30-60 min.

Preferably, the finishing temperature of the hot rolling mill in S5 is 800-1000 ℃, and the hot rolling time of the hot rolling mill is 5-10 min.

Preferably, the annealing in S5 is performed by a two-stage constant temperature annealing solution treatment process, wherein the annealing is performed at 950-1050 ℃ for 1-2 hours, and then the annealing is performed by cooling to 750-800 ℃ for 4-5 hours.

Preferably, the surface of the electroplated Cr control alloy steel in S6 is electroplated with a Cr film with the thickness of 0.08-0.12mm, the electroplating solution contains CrO3250-300g/L, H2SO42.5-3.0g/L, Cr3-3.5g/L and has the current density of 5-10A/dm, the surface of the electroplated Zr control alloy steel is electroplated with a Zr film with the thickness of 0.05-0.08mm, the electroplating solution contains Zr (NO3)4100-150g/L, TEA20-30g/L and has the current density of 6-8A/dm.

Preferably, the alloy steel electroplated in the step S6 is soaked in a hydrofluoric acid aqueous solution with the mass fraction of 50-55% for 20-30 min.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the elements of chromium, tungsten, manganese, silicon, molybdenum, nickel, phosphorus, vanadium and copper are added into the iron element, so that the corrosion resistance, the wear resistance and the strength of the alloy steel can be increased during the manufacturing process.

(2) The iron of the invention is prepared iron, so that the impurity content in the iron is very low, the impurity in the alloy steel is prevented from being too high, the impurity influences the strength of the alloy steel, and the graphite is used as the carbon element, so that the alloy steel cannot cause the problem of crystal pores.

(3) When forging, the hot forging machine is adopted for re-forging, so that the alloy steel plate can be finer, electroplating and acidification treatment are carried out on the alloy steel plate, an oxidation film is formed, and corrosion and oxidation are prevented.

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.