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

Preparation method of Al-Mg-Si aluminum alloy profile with high surface quality

An aluminum alloy profile, high surface technology, applied in the direction of improving energy efficiency, process efficiency, etc., can solve the problems of poor surface quality of products, pockmarked surfaces, affecting the appearance of products, etc.

Active Publication Date: 2021-04-20
广西南南铝加工有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the extrusion production of Al-Mg-Si aluminum alloy, the surface hardness of the working belt of the mold can only reach 55-60HRC. Due to the low strength of the working belt, the life of the mold is short and the surface quality of the product is poor; The length of the working belt is 6-12mm to improve the life of the mold and product quality, but too long working belt can easily lead to defects such as slag spots, scratches, burrs, pitting and other defects on the surface of the extruded profile, which seriously affects the appearance of the product; traditional production In the process of extrusion production with high temperature and low speed, the ingot temperature must reach 510-530°C, the profile speed is only 0.5-2.0m / min, the surface quality of the product is poor, and the roughness is high

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of Al-Mg-Si aluminum alloy profile with high surface quality
  • Preparation method of Al-Mg-Si aluminum alloy profile with high surface quality
  • Preparation method of Al-Mg-Si aluminum alloy profile with high surface quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment provides a method for preparing an Al-Mg-Si aluminum alloy profile with high surface quality, comprising the following steps:

[0050] S1. Nitriding treatment: place the mold in a nitriding furnace for nitriding treatment. The mold material grade is H13 mold steel 4Cr5MoSiV1. The nitriding temperature for nitriding treatment is 560°C, and the nitriding time is 4 hours. Among them, the used The length of the working belt of the mold is 7mm;

[0051]S2. Laser treatment: use a laser to process the working belt of the mold after nitriding treatment, the laser scanning power is 2.1 kW; the laser scanning speed is 20mm / s; the laser incident angle is 70°; the laser spot size is 4.0mm; The hardened layer depth of the mold working belt is 0.5mm, and the surface hardness of the mold working belt after laser treatment is 65HRC; figure 1 For this embodiment, adopt the edge structure morphology of the mold working belt after mold nitriding+laser treatment, by figur...

Embodiment 2

[0061] This embodiment provides a method for preparing an Al-Mg-Si aluminum alloy profile with high surface quality, comprising the following steps:

[0062] S1. Nitriding treatment: place the mold in a nitriding furnace for nitriding treatment. The mold material grade is H13 mold steel 4Cr5MoSiV1. The nitriding temperature for nitriding treatment is 565°C, and the nitriding time is 3.0 hours. Among them, the used The length of the working belt of the mold is 3mm;

[0063] S2. Laser treatment: use a laser to process the working belt of the mold after nitriding treatment, the laser scanning power is 2.8 kW; the laser scanning speed is 60mm / s; the laser incident angle is 60°; the laser spot size is 5.5mm; The hardened layer depth of the mold working belt is 1.8mm, and the surface hardness of the mold working belt after laser treatment is 67HRC; figure 2 For this embodiment, adopt the edge structure morphology of the mold working belt after mold nitriding+laser treatment, by ...

Embodiment 3

[0073] This embodiment provides a method for preparing an Al-Mg-Si aluminum alloy profile with high surface quality, comprising the following steps:

[0074] S1. Nitriding treatment: place the mold in a nitriding furnace for nitriding treatment. The mold material grade is H13 mold steel 4Cr5MoSiV1. The nitriding temperature for nitriding treatment is 570°C, and the nitriding time is 3 hours. Among them, the used The length of the working belt of the mold is 5mm;

[0075] S2. Laser treatment: use a laser to process the working belt of the mold after nitriding treatment, the laser scanning power is 3.5kW; the laser scanning speed is 45mm / s; the laser incident angle is 80°; the laser spot size is 3.5mm; The hardened layer depth of the mold working belt is 2.5mm, and the surface hardness of the mold working belt after laser treatment is 69HRC; image 3 For this embodiment, adopt the edge structure morphology of the mold working belt after mold nitriding+laser treatment, by imag...

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
Lengthaaaaaaaaaa
Surface roughnessaaaaaaaaaa
Surface roughnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an Al-Mg-Si aluminum alloy profile with high surface quality. The preparation method comprises the following steps that a mold is placed in a nitriding furnace to be subjected to nitriding treatment; laser treatment is performed on a working tape of the nitrided mold by the aid of a laser; casting is performed to prepare an Al-Mg-Si aluminum alloy bar blank; the mold subjected to laser treatment is placed in a mold heating furnace to be preheated; the obtained Al-Mg-Si aluminum alloy bar blank is placed in an electromagnetic induction furnace to be preheated; the preheated bar blank is extruded in an extruding machine through the mold; the profile obtained after extrusion is subjected to online quenching; the profile obtained after quenching is stretched and straightened by the aid of a stretching machine; and the extruded profile obtained after stretching is placed in an aging oven to be subjected to artificial aging, and an extruded profile finished product is obtained. Laser treatment is carried out after nitriding treatment is carried out on the working tape of the mold, the surface layer strength of the working tape is effectively improved, so that the surface of the extruded product is excellent, and the method can be widely applied to production of AlMgSi aluminum alloy extruded profiles needed in the fields of aerospace, transportation, constructional engineering and the like.

Description

technical field [0001] The invention relates to the technical field, in particular to a method for preparing an Al-Mg-Si aluminum alloy profile with high surface quality. Background technique [0002] Al-Mg-Si aluminum alloy has the advantages of strong corrosion resistance, good heat resistance, easy welding, strong toughness, etc., and is widely used in aerospace, transportation, construction engineering and other fields. In the extrusion production of Al-Mg-Si aluminum alloy, the surface hardness of the working belt of the mold can only reach 55-60HRC. Due to the low strength of the working belt, the life of the mold is short and the surface quality of the product is poor; The length of the working belt is 6-12mm to improve the life of the mold and product quality, but too long working belt can easily lead to defects such as slag spots, scratches, burrs, pitting and other defects on the surface of the extruded profile, which seriously affects the appearance of the product...

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
IPC IPC(8): B23P15/00
CPCY02P10/25
Inventor 韦祖祥周伟莫宇飞刘俊生向晶赵睿澄齐林白文全兰天虹卢刚王玉文李昌健陈冠希张伟东刘枝远岑威
Owner 广西南南铝加工有限公司