Unlock instant, AI-driven research and patent intelligence for your innovation.

An Extrusion Die for Aluminum Alloy Hollow Tube Based on PCVD

A technology for extrusion dies and hollow tubes, applied in the field of ion surface modification, can solve the problems of increased PCVD hard film defects, increased residual stress, decreased hardness and bonding force, etc., to improve hardness, reduce defects, and prevent fractures or peeling effect

Active Publication Date: 2017-09-19
SHANGYU HONGEN PRECISION MACHINERY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PCVD hard films are mostly ceramic materials, and their thickness is usually only a few microns, while the substrate is generally metal or alloy. The hardness, elastic modulus and thermal expansion coefficient of the two are far apart, and the lattice types are also different. Increase the number of defects in the PCVD hard film, increase the residual stress, and decrease the hardness and bonding force

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Use the following steps to carry out surface treatment on the aluminum alloy hollow tube extrusion die made of hot work die steel H13 material:

[0044] (1) Carry out heat treatment to the extrusion mold: the quenching temperature is 1120°C, the tempering temperature is 550°C (HRC=52~54), and then degreasing, polishing and dehydration are carried out;

[0045] (2) TiN, TiC, TiCN, and TiSiN are coated sequentially by PCVD, and the thicknesses of each coating are 0.5 μm, 5 μm, 1 μm, and 1.5 μm, respectively.

[0046] The extrusion die with the above surface treatment can produce 6 tons of aluminum alloy hollow tubes during its normal service life, and the hardness of the coating film is Hv2900.

Embodiment 2

[0048] Use the following steps to carry out surface treatment on the aluminum alloy hollow tube extrusion die made of hot work die steel H13 material:

[0049] (1) Carry out heat treatment to the extrusion mold: the quenching temperature is 1120°C, the tempering temperature is 550°C (HRC=52~54), and then degreasing, polishing and dehydration are carried out;

[0050] (2) TiC, TiN, TiCN, and TiSiN are coated sequentially by PCVD, and the thicknesses of each layer of coating are 0.5 μm, 5 μm, 1 μm, and 1.5 μm, respectively.

[0051] The extrusion die with the above surface treatment can produce 5.3 tons of aluminum alloy hollow tubes during its normal service life, and the hardness of the coating film is Hv2900.

Embodiment 3

[0053] Use the following steps to carry out surface treatment on the aluminum alloy hollow tube extrusion die made of hot work die steel H13 material:

[0054] (1) Carry out heat treatment to the extrusion mold: the quenching temperature is 1120°C, the tempering temperature is 550°C (HRC=52~54), and then degreasing, polishing and dehydration are carried out;

[0055] (2) TiN and Al are sequentially processed by PCVD 2 o 3 , TiCN, TiSiN coating, the thickness of each layer of coating is 0.5μm, 5μm, 1μm, 1.5μm.

[0056] The extrusion die with the above surface treatment can produce 5.1 tons of aluminum alloy hollow tubes during its normal service life, and the hardness of the coating film is Hv2800.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aluminum alloy hollow tube extrusion die based on PCVD treatment, which includes a base body and a coating film coated on a predetermined position of the base body after PCVD treatment. One of independent titanium nitride, titanium carbide, titanium carbonitride, aluminum oxide, and silicon nitride titanium. The service life of the aluminum alloy hollow tube extrusion die of the invention is 1 to 10 times that of the traditional nitriding surface-treated aluminum alloy hollow tube extrusion die, which greatly prolongs the service life of the extrusion die.

Description

technical field [0001] The invention relates to the field of plasma surface modification, in particular to an aluminum alloy hollow tube extrusion die based on PCVD treatment. Background technique [0002] Micro-channel porous tubes, especially aluminum alloy hollow tubes are the main parts of heat exchangers, and are the best products to replace the original copper tubes. They have good heat dissipation effect, low cost and high output, and are widely used in automobile air conditioners and household air conditioners. , central air conditioning, refrigerator heat exchanger, etc. [0003] Micro-channel perforated tube extrusion die is the key process equipment for aluminum alloy hollow tube forming. The aluminum alloy extrusion die is a die with very bad working conditions, which is mainly manifested in three aspects: (1) The working environment temperature is high (450 ° C ~ 500 ° C) and it is in a high temperature state for a long time. Just H13 can't withstand high temp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02
Inventor 倪柏钢陶狄锋严岳峰倪宏恩
Owner SHANGYU HONGEN PRECISION MACHINERY