Cold punched die and manufacturing method thereof

A mold and cold stamping technology, which is applied in the field of wear-resistant carbide coating composite cold stamping mold and its preparation, can solve the problems of demanding production equipment, low production efficiency, and low bonding strength of the coating

Active Publication Date: 2015-04-22
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] At present, the surface coating technology of metal materials includes: laser cladding method, high temperature self-propagating sintering technology, powder metallurgy technology, material vapor deposition technology (including: chemical vapor deposition (CVD), physical vapor deposition (PVD)), etc., but these methods , there are deficiencies such as demanding production equipment, low production efficiency, and low coating bonding strength

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  • Cold punched die and manufacturing method thereof
  • Cold punched die and manufacturing method thereof
  • Cold punched die and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: the preparation method of cold stamping die die, comprises the steps:

[0074] 1. First prepare a titanium plate 2, wherein the purity of titanium should be controlled at 99.7%. The titanium plate 2 should be surface treated first, the steps are as follows:

[0075] The first step is pickling, choose 300ml / L hydrochloric acid, and then rinse with running water;

[0076] In the second step of pickling, choose 300ml / L hydrofluoric acid, and then rinse with running water;

[0077] The third step is surface grinding, using 800 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 2 is controlled at 1mm.

[0078] 2. According to the size of the die of the cold stamping die, use polystyrene foam to make the lost mold of the die of the cold stamping die. surface, according to which the titanium plate 2 is fixed on the cutting edge surface of the concave lost mold 7, and then the graphite paper 1 is fixed o...

Embodiment 2

[0087] Embodiment 2: the preparation method of cold stamping die die, comprises the steps:

[0088] 1. Prepare a titanium plate 2 first, wherein the purity of titanium should be controlled at 99.8%. The titanium plate 2 should be surface treated first, and the steps are as follows:

[0089] The first step is pickling, 60ml / L phosphoric acid, and then rinse with running water;

[0090] The second step is pickling, 200ml / L sulfuric acid, and then rinse with running water;

[0091] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 2 is controlled at 1.5mm.

[0092] 2. According to the size of the die of the cold stamping die, use polystyrene foam to make the lost mold of the die of the cold stamping die. surface, according to which the titanium plate 2 is fixed on the cutting edge surface of the concave lost mold 7, and then the graphite paper 1 is fixed on the surface of t...

Embodiment 3

[0101] Embodiment 3: the preparation method of cold stamping die die, comprises the steps:

[0102] 1. Prepare a titanium plate 2 first, wherein the purity of titanium should be controlled at 99.8%. The titanium plate 2 should be surface treated first, and the steps are as follows:

[0103] The first step is pickling, 120ml / L hydrogen peroxide, and then rinse with running water;

[0104] The second step is pickling, 240ml / L hydrogen peroxide, and then rinse with running water;

[0105] The third step is surface grinding, using 1200 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 2 is controlled at 2.5 mm.

[0106] 2. According to the size of the die of the cold stamping die, use polystyrene foam to make the lost mold of the die of the cold stamping die. surface, according to which the titanium plate 2 is fixed on the cutting edge surface of the concave lost mold 7, and then the graphite paper 1 is fixed on the surf...

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Abstract

The invention aims at providing a cold punched die. The surface of a station punched position of the die is provided with carbide coatings, and a manufacturing method for obtaining the cold punched die is provided. According to the cold punched die, the upper surface and the lower surface of the station punched position are provided with the carbide coatings; a pseudo-single crystal TiC compact ceramic layer, a micrometer TiC ceramic layer and a composite layer of the TiC and a base body are sequentially distributed in a gradient manner from outside to inside, and are exerted on the surface of carbon steel. Through the base body and a titanium composite body which are obtained through casting, an outer carbon source is introduced externally, heating and heat preservation are carried out, and therefore a carbide coating is formed on the surface of the base body; the carbide coating is in metallurgical bonding with the base body, and the bonding force is large; the problem that existing hard particles and the metal base body are bonded in a non-metallurgical manner, the bonding force is weak, and the particles are prone to falling off is solved; and the wear-resisting performance of the station punched surface of the cold punched die is greatly improved.

Description

technical field [0001] The invention relates to a cold stamping die with a wear-resistant carbide coating and a preparation method thereof, in particular to a composite cold stamping die with a wear-resistant carbide coating and a preparation method thereof, in particular to a cold stamping die applied to carbon steel A composite cold stamping die with a wear-resistant carbide coating on the surface and a preparation method thereof. Background technique [0002] Cold stamping dies are mainly used to manufacture punches and dies for blanking and punching metal or non-metal sheets. When the thin plate is punched between the punch and the die, the thin plate is deformed at the initial stage, and as the deformation increases, the lower surface of the thin plate is cracked due to the large tensile stress. During use, as the wear amount of the die and punch increases, the sharp corners of the blade gradually become rounded, resulting in a decrease in the tensile stress generated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/20B22D18/06
CPCB21D37/01B21D37/10B21D37/20B22D18/06
Inventor 许云华赵娜娜梁淑华钟黎声燕映霖叶芳霞任冰邹军涛肖鹏
Owner XIAN UNIV OF TECH
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