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Temperature-impact-resistant needle and preparation method thereof

A technology of punching and temperature resistance, used in manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of poor high temperature resistance, insufficient strength, and easily broken punching needles, achieve a wide temperature resistance range, and improve high temperature resistance. performance and corrosion resistance, the effect of improving wear resistance

Active Publication Date: 2014-10-22
宁波文而昌新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the punch needles produced by the prior art have the disadvantages of being easy to break, wearing out quickly, not having high strength, and being poor in high temperature resistance.

Method used

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  • Temperature-impact-resistant needle and preparation method thereof
  • Temperature-impact-resistant needle and preparation method thereof
  • Temperature-impact-resistant needle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Raw material preparation: Prepare raw materials according to the composition elements and mass percentages of the temperature-resistant punching needles described in Table 1, Example 1;

[0037] Forging: smelting and pouring the prepared raw materials to process them into the desired shape; the pouring temperature is 1450°C;

[0038] Secondary tempering: carry out secondary tempering treatment on the temperature-resistant punching needle after processing; the secondary tempering treatment is: the first tempering temperature is 400°C, keep it warm for 2 hours, cool to 60°C and carry out the second tempering at 380°C Secondary tempering treatment;

[0039] Heat treatment: heat-treat the tempered temperature-resistant punching needle at 830°C first, then conduct induction quenching at 820°C, keep it warm for 2 hours, cool to room temperature, and finally temper at 320°C to obtain the final product. Warm the needle.

Embodiment 2

[0041] Raw material preparation: Prepare raw materials according to the composition elements and mass percentages of the temperature-resistant punching needles described in Table 1, Example 2;

[0042] Forging: smelting and pouring the prepared raw materials to process them into the desired shape; the pouring temperature is 1430°C;

[0043] Secondary tempering: carry out secondary tempering treatment on the temperature-resistant punching needle after processing; the secondary tempering treatment is: the first tempering temperature is 350°C, keep the temperature for 3 hours, cool to 60°C and carry out the second tempering at 330°C Secondary tempering treatment;

[0044] Heat treatment: heat-treat the tempered temperature-resistant punching pin at 800°C first, then induction quenching at 780°C, keep warm for 1 hour, cool to room temperature, and finally temper at 300°C to obtain the final product. Warm the needle.

Embodiment 3

[0046] Raw material preparation: prepare raw materials according to the constituent elements and mass percentages of the temperature-resistant punching needles described in Table 1, Example 3;

[0047] Forging: smelting and pouring the prepared raw materials to process them into the desired shape; the pouring temperature is 1480°C;

[0048] Secondary tempering: carry out secondary tempering treatment on the temperature-resistant punching pin after processing; the secondary tempering treatment is: the first tempering temperature is 500°C, keep it warm for 1 hour, and then carry out the second tempering at 450°C after cooling to 60°C Secondary tempering treatment;

[0049] Heat treatment: heat-treat the tempered temperature-resistant punching needle at 860°C first, then conduct induction quenching at 860°C, keep it warm for 1 hour, cool to room temperature, and finally temper at 330°C to obtain the final product. Warm the needle.

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PUM

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Abstract

The invention relates to a temperature-impact-resistant needle, particularly a temperature-impact-resistant needle and a preparation method thereof, belonging to the technical field of mold processing. The temperature-impact-resistant needle is composed of the following elements in percentage by mass: 0.35-0.4% of carbon (C), 12.5-14.0% of chromium (Cr), 0.5-0.8% of manganese (Mn), 0.3-0.5% of molybdenum (Mo), 0.3-0.5% of vanadium (V), 0.3-0.5% of rhenium (Re), and the balance of iron (Fe) and inevitable impurities. The preparation method comprises the following steps: preparing the raw materials according to the elements and mass percent of the temperature-impact-resistant needle; smelting, casting, and processing into the required shape; carrying out double tempering treatment; and carrying out heat treatment at 800-860 DEG C, and carrying out induction quenching and tempering to obtain the temperature-impact-resistant needle. The temperature-impact-resistant needle has the advantages of high strength, high hardness, favorable high-temperature resistance, high wear resistance, low production cost and the like.

Description

technical field [0001] The invention relates to a temperature-resistant punching pin, in particular to a temperature-resistant punching pin and a preparation method thereof, belonging to the technical field of mold processing. Background technique [0002] Stamping dies are used to process materials (metal or non-metal materials) into parts (or semi-finished products) in cold stamping processing. Punch needle, also known as punch, is an indispensable accessory in the work of stamping dies. It is a replaceable die consumable. It is often directly in contact with the material to cause the material to separate or plastically deform. Therefore, the material, structure, and shape of the punching needle directly affect the quality, production efficiency, and production cost of the stamping part. However, the punching pin produced by the prior art has the deficiencies such as breakability, fast wear, insufficient strength, and poor high temperature resistance. Contents of the in...

Claims

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Application Information

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IPC IPC(8): C22C38/24C21D9/00
Inventor 吴满旵
Owner 宁波文而昌新材料科技有限公司