High-strength wear-resistant stainless steel casting and preparation process thereof

A preparation process and wear-resistant technology, which is applied in the field of alloy steel casting, can solve the problems of reduced toughness and plasticity, poor chromium, and reduced corrosion resistance, and achieve excellent mechanical properties and wear resistance, high-efficiency production, and reasonable and compact steps. Effect

Active Publication Date: 2020-08-25
徐州中盛远达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that there is a certain contradiction between mechanical properties and wear resistance. For example, the hardness can be increased by increasing the content of carbon and nitrogen, and it is very cheap. However, excessive carbon and nitrogen content will lead to a decrease in toughness and plasticity. It may cause partial chromium depletion, resulting in a decrease in corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high-strength wear-resistant stainless steel casting, including the following components:

[0030] Cr: 16.30%;

[0031] Ni: 10.00%;

[0032] Mo: 2.00%;

[0033] C: 0.01%;

[0034] Fe: balance.

[0035] In the present embodiment, the preparation process of the high-strength wear-resistant stainless steel casting includes the following steps:

[0036] S1 wax injection: use a wax injection machine to inject wax into the mold box to form a casting model, then demould, and place the released casting model in water to cool;

[0037] S2 group tree: melting and bonding the casting model and gate rod with electric soldering iron sheet;

[0038] S3 Shell making: Pre-wet the casting model in silica gel, coat the slurry on the surface of the casting model, and wrap the sand layer to make a shell;

[0039] S4 dewaxing: use steam to heat the shell to remove the wax;

[0040] S5 sintering molding: place the dewaxed shell in a sintering furnace for sintering molding;

[0041]...

Embodiment 2

[0049] A high-strength wear-resistant stainless steel casting, including the following components:

[0050] Cr: 24.50%;

[0051] Ni: 12.75%;

[0052] Mo: 3.35%;

[0053] C: 0.03%;

[0054] Fe: balance.

[0055] In the present embodiment, the preparation process of the high-strength wear-resistant stainless steel casting includes the following steps:

[0056] S1 wax injection: use a wax injection machine to inject wax into the mold box to form a casting model, then demould, and place the released casting model in water to cool;

[0057] S2 group tree: melting and bonding the casting model and gate rod with electric soldering iron sheet;

[0058] S3 Shell making: Pre-wet the casting model in silica gel, coat the slurry on the surface of the casting model, and wrap the sand layer to make a shell;

[0059] S4 dewaxing: use steam to heat the shell to remove the wax;

[0060] S5 sintering molding: place the dewaxed shell in a sintering furnace for sintering molding;

[0061]...

Embodiment 3

[0069]A high-strength wear-resistant stainless steel casting, including the following components:

[0070] Cr: 16.30%;

[0071] Ni: 10.00%;

[0072] Mo: 2.00%;

[0073] C: 0.01%;

[0074] Mn: 0.40%;

[0075] Nb: 0.25%;

[0076] Si: 0.25%;

[0077] In this embodiment, the metallographic structure of the high-strength wear-resistant stainless steel casting is a mixed phase of austenite and ferrite, and austenite accounts for 72%.

[0078] In the present embodiment, the preparation process of the high-strength wear-resistant stainless steel casting includes the following steps:

[0079] S1 wax injection: use a wax injection machine to inject wax into the mold box to form a casting model, then demould, and place the released casting model in water to cool;

[0080] S2 group tree: melting and bonding the casting model and gate rod with electric soldering iron sheet;

[0081] S3 Shell making: Pre-wet the casting model in silica gel, coat the slurry on the surface of the cast...

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Abstract

The invention belongs to the technical field of alloy steel casting, and particularly relates to a high-strength wear-resistant stainless steel casting and a preparation process thereof. The high-strength wear-resistant stainless steel casting comprises 16.30-24.50% of Cr, 10.00-12.75% of Ni, 2.00-3.35% of Mo, 0.01-0.03% of C, and the balance Fe. The casting is casted by multiple steps such as injection, grouping a tree, making a shell, dewaxing, sintering molding and smelting casting. According to the high-strength wear-resistant stainless steel casting, through regulation and control of thecomposition and the process, the comprehensive performance is stable and excellent, and the high-strength wear-resistant stainless steel casting has excellent mechanical property and wear-resistant property. The preparation process of the high-strength wear-resistant stainless steel casting is simple and convenient to operate, reasonable and compact in steps, and economical and controllable in cost, and realizes the high-efficiency production of the high-strength wear-resistant stainless steel casting.

Description

technical field [0001] The invention belongs to the technical field of alloy steel casting, and in particular relates to a high-strength wear-resistant stainless steel casting and a preparation process thereof. Background technique [0002] Stainless steel has excellent weak corrosion resistance and mechanical properties, and is a kind of steel widely used. Stainless steel castings refer to the parts obtained by pouring stainless steel molten metal into a mold cavity that is suitable for the shape and size of the part, and cooling and solidifying. The method of manufacturing such parts is called casting. This method has wide applicability and can manufacture castings with complex shapes, especially complex inner cavities, and is almost not limited by size; at the same time, waste parts and chips can be used as raw materials, and the cost is low; in addition, castings The shape and size of the machine are close to the parts, so the workload of cutting can be reduced and a lo...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C38/48C22C38/04C22C38/02B22C9/04
CPCC22C38/44C22C38/48C22C38/04C22C38/02B22C9/04C21D2211/001C21D2211/005
Inventor 王洪年
Owner 徐州中盛远达新材料有限公司
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