High-strength and high-toughness wear-resistant steel shot

Abstract

The high-strength and high-toughness wear-resistant steel shot comprises a multi-column divergent body, a high-hardness filling core body and a wear-resistant wrapping ball layer, the multi-column divergent body is formed by distributing a plurality of high-carbon supporting columns in a divergent mode, the high-hardness filling core body is installed on the multi-column divergent body, and the wear-resistant wrapping ball layer is arranged on the high-hardness filling core body. The tail end of the high-carbon supporting column extends to the outer side of the high-hardness filling core body to form a blocking head end, the blocking head end and the high-hardness filling core body are each provided with a plurality of wrapping reinforcing grooves, the outer side of the multi-column diverging body and the outer side of the high-hardness filling core body are wrapped by the abrasion-resistant wrapping ball layer, and the abrasion-resistant wrapping ball layer is arranged on the outer side of the multi-column diverging body and the outer side of the high-hardness filling core body. And a chromium coating is plated on the outer side of the wear-resistant coating ball layer. The steel shot has the beneficial effects that the core supporting degree of the steel shot is increased through the multi-column divergent body and the high-hardness filling core body, the overall bonding performance of the wear-resistant coating ball layer is increased through surface high-temperature treatment of the multi-column divergent body and the high-hardness filling core body, the wear-resistant thickness of the steel shot is increased through cooperation of the chromium plating layer and the coating layer, and the overall strength, hardness, wear resistance and other performance of the steel shot are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of steel shot manufacturing, in particular to a high-strength and toughness wear-resistant steel shot. Background Art

[0002] Steel is widely used. It can be made into spherical particles by processing. Steel vanadium is used in the fields of descaling and rust removal of mechanical workpieces and equipment. During the treatment process, it plays a long-term cyclic role between the workpiece and the centrifugal shot blasting machine. Therefore, the steel shot itself has greater friction and collision. Traditional steel shot production is mostly steel shot and casting shot. Although the casting shot has high hardness, it is relatively fragile and easy to break during the collision. Therefore, steel shot is widely used. It is mainly quenched by throwing the molten steel into the water to make the surface temperature of the steel shot drop sharply to form a shot body. After the quenching, the shot body is dried and reheated and tempered in the furnace to achieve the appropriate hardness. The tempered steel shot can be screened, but its internal and external components are consistent. The outer layer of the steel shot needs to have good wear resistance, corrosion resistance and toughness, and the inner core needs to have high hardness and support performance. The steel shot structure with the same component cannot take into account the support performance, toughness and wear resistance of high hardness at the same time. Summary of the invention

[0003] The invention aims to provide a high-strength and toughness wear-resistant steel shot in order to reduce the raw material cost of moxa sticks and combustion smoke.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: A high-strength and toughness wear-resistant steel shot comprises a multi-column divergent body, a high-hardness filling core and a wear-resistant coated ball layer, wherein the multi-column divergent body is composed of a plurality of high-carbon support columns distributed in a divergent shape, the high-hardness filling core is mounted on the multi-column divergent body, the ends of the high-carbon support columns extend to the outside of the high-hardness filling core to form a stopper end, the stopper end and the high-hardness filling core are both provided with a plurality of coating reinforcement grooves, the outer sides of the multi-column divergent body and the high-hardness filling core are coated with the wear-resistant coated ball layer, and the outer side of the wear-resistant coated ball layer is plated with a chrome coating.

[0005] Furthermore, the length of the blocking head end is one third of the high-carbon support column, and there are at least four high-carbon support columns.

[0006] Furthermore, the high carbon support column includes the following components (by mass percentage): Carbon 1.2-1.3%, ash 0.03-0.04%, sulfur 0.05-0.06%, phosphorus 0.03%, nickel 8-10%, manganese 0.1%, silicon 0.5-1%, and the balance is iron.

[0007] The high-hardness filling core 2 includes the following components (by mass percentage): Carbon 1-1.2%, ash 0.03-0.05%, sulfur 0.04-0.07%, phosphorus 0.03%, nickel 8-10%, manganese 0.1%, silicon 0.5-1%, and the balance is iron.

[0008] The wear-resistant coating ball layer 3 includes the following components (by mass percentage): Carbon 0.3-0.6%, vanadium 0.02-0.04%, sulfur 0.02-0.03%, phosphorus 0.03-0.05%, titanium 0.3-0.5%, manganese 0.2-0.3%, silicon 0.2-0.5%, molybdenum 1.3%, chromium 13-15%, and the balance is iron.

[0009] The beneficial effects are: the core support of the steel shot is increased through the multi-column divergent body and the high-hardness filling core, thereby improving its overall strength; Through high temperature treatment of the surface of multi-column diffuser and high-hardness filling core, the overall bonding performance of the wear-resistant coating ball layer is increased, and the overall strength and toughness are improved; The chrome plating improves the wear resistance and corrosion resistance of the outer layer, and the coating layer increases its wear resistance thickness, thus ensuring the overall strength, hardness, wear resistance and other properties of the steel shot. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a high-strength and toughness wear-resistant steel shot described in the present invention.

[0011] The following are the descriptions of the reference numerals: 1. Multi-column diffuser; 2. High-hardness filling core; 3. Wear-resistant coating ball layer; 4. Chrome coating; 5. Coated reinforced groove. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with embodiments and accompanying drawings:

[0013] Example 1 like Figure 1 As shown, the high-strength and toughness wear-resistant steel shot described in the present invention is composed of a multi-column divergent body 1, a high-hardness filling core 2 and a wear-resistant coating ball layer 3; The multi-column divergent body 1 is composed of a plurality of high-carbon support columns distributed in a divergent shape, a high-hardness filling core 2 is installed on the multi-column divergent body 1, the end of the high-carbon support column extends to the outside of the high-hardness filling core 2 to form a stopper end, and a plurality of coating reinforcement grooves 5 are provided on the stopper end and the high-hardness filling core 2. The outer sides of the multi-column divergent body 1 and the high-hardness filling core 2 are coated with a wear-resistant coating ball layer 3, and the coating reinforcement groove 5 helps to improve the adhesion of the wear-resistant coating ball layer 3. The outer side of the wear-resistant coating ball layer 3 is plated with a chrome coating 4, which has a strong anti-corrosion effect and good wear resistance, improves the overall performance of the steel shot and facilitates long-term storage.

[0014] In this embodiment, the length of the stopper end is one third of the high-carbon support column, and at least four high-carbon support columns are provided, so that the connecting lines of the end sides thereof form a polyhedron.

[0015] In this embodiment, the high carbon support column includes the following components (by mass percentage): 1.3% carbon, 0.03% vanadium, 0.06% sulfur, 0.03% phosphorus, 8% nickel, 0.1% manganese, 0.5% silicon, and the balance is iron.

[0016] The high-hardness filling core 2 includes the following components (by mass percentage): 1% carbon, 0.03% vanadium, 0.06% sulfur, 0.03% phosphorus, 8% nickel, 0.1% manganese, 1% silicon, and the balance is iron.

[0017] The wear-resistant coating ball layer 3 includes the following components (by mass percentage): 0.4% carbon, 0.03% vanadium, 0.02% sulfur, 0.03% phosphorus, 0.3% titanium, 0.2% manganese, 0.2% silicon, 1.3% molybdenum, 13% chromium, and the balance is iron.

[0018] Example 2 like Figure 1 As shown, the high-strength and toughness wear-resistant steel shot described in the present invention is composed of a multi-column divergent body 1, a high-hardness filling core 2 and a wear-resistant coating ball layer 3; Its structure and size are the same as those of Example 1.

[0019] The difference from Example 1 is that in this embodiment, the high carbon support column includes the following components (by mass percentage): 1.2% carbon, 0.04% vanadium, 0.05% sulfur, 0.03% phosphorus, 10% nickel, 0.1% manganese, 1% silicon, and the balance is iron.

[0020] The high-hardness filling core 2 includes the following components (by mass percentage): 1.2% carbon, 0.03% vanadium, 0.05% sulfur, 0.03% phosphorus, 10% nickel, 0.1% manganese, 0.5% silicon, and the balance is iron.

[0021] The wear-resistant coating ball layer 3 includes the following components (by mass percentage): 0.3% carbon, 0.02% vanadium, 0.03% sulfur, 0.05% phosphorus, 0.4% titanium, 0.3% manganese, 0.3% silicon, 1.3% molybdenum, 15% chromium, and the balance is iron.

[0022] In the above embodiment, the multi-column divergent body 1 and the high-hardness filling core body 2 are cast, and they are both high-carbon steel bodies with high hardness. They serve as the supporting core of the steel shot to improve the overall strength of the steel shot. Through high-temperature treatment of the surface, the carbon content retained on the surface is removed to form a plurality of small-sized and different-sized coating reinforcement grooves 5, which are convenient for increasing the bonding strength and adhesion between the wear-resistant coating ball layer and the supporting core. Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A high-strength and toughness wear-resistant steel shot, characterized in that: It includes a multi-column divergent body, a high-hardness filling core and a wear-resistant coated ball layer. The multi-column divergent body is composed of a number of high-carbon support columns distributed in a divergent shape. The high-hardness filling core is installed on the multi-column divergent body. The ends of the high-carbon support columns extend to the outside of the high-hardness filling core to form a stopper end. The stopper end and the high-hardness filling core are both provided with a number of coating reinforcement grooves. The outer sides of the multi-column divergent body and the high-hardness filling core are coated with the wear-resistant coated ball layer, and the outer side of the wear-resistant coated ball layer is plated with a chrome coating.

2. The high-strength and toughness wear-resistant steel shot according to claim 1, characterized in that: The length of the stop head end is one third of the high-carbon support column, and at least three high-carbon support columns are provided.

3. The high-toughness wear-resistant steel shot according to claim 1, characterized in that: The high carbon support column comprises the following components (by mass percentage): Carbon 1.2-1.3%, ash 0.03-0.04%, sulfur 0.05-0.06%, phosphorus 0.03%, nickel 8-10%, manganese 0.1%, silicon 0.5-1%, and the balance is iron.

4. The high-toughness wear-resistant steel shot according to claim 1, characterized in that: The high-hardness filling core 2 includes the following components (by mass percentage): Carbon 1-1.2%, ash 0.03-0.05%, sulfur 0.04-0.07%, phosphorus 0.03%, nickel 8-10%, manganese 0.1%, silicon 0.5-1%, and the balance is iron.

5. The high-toughness wear-resistant steel shot according to claim 1, characterized in that: The wear-resistant coating ball layer 3 includes the following components (by mass percentage): Carbon 0.3-0.6%, vanadium 0.02-0.04%, sulfur 0.02-0.03%, phosphorus 0.03-0.05%, titanium 0.3-0.5%, manganese 0.2-0.3%, silicon 0.2-0.5%, molybdenum 1.3%, chromium 13-15%, and the balance is iron.

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