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

An annealing process for suppressing welding cracking of high-silicon aluminum alloy

A high-silicon aluminum alloy and annealing process technology, applied in the field of material processing, to achieve the effect of high quality and small probability of small cracks appearing

Active Publication Date: 2018-03-16
SHENZHEN RES INST CENT SOUTH UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims at the deficiencies existing in the existing laser welding, and provides an annealing process for suppressing welding cracking of high-silicon aluminum alloys

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
  • An annealing process for suppressing welding cracking of high-silicon aluminum alloy
  • An annealing process for suppressing welding cracking of high-silicon aluminum alloy
  • An annealing process for suppressing welding cracking of high-silicon aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) The annealing process before machining is as follows: cutting the Al-50Si alloy and Al-27Si alloy blanks into blocks, the size of the former is 85mm×85mm×10mm, the size of the latter is 85mm×85mm×3mm, placed in a box In the resistance furnace, the temperature of the resistance furnace is raised to 450°C at 10°C / min, held for 0.5h, cooled to 150°C with the furnace, and the furnace door is opened to cool in air (the annealing at a higher temperature ends), and then the temperature is raised to 390°C at 5°C / min. Insulate for 4 hours, open the furnace door and air cool (lower temperature annealing ends).

[0037] 2) The annealing process after machining is as follows: firstly, the processed Al-50Si alloy shell and Al-27Si alloy cover plate are cleaned with acetone, and after air drying, they are respectively placed in a box-type resistance furnace, and the temperature of the resistance furnace is raised at 10°C / min to 430°C, keep warm for 0.5h, cool down to 150°C with th...

Embodiment 2

[0047] 1) The annealing process before machining is as follows: cutting Al-50Si alloy and Al-27Si alloy blanks into blocks, the size of the former is 85mm×85mm×10mm, and the size of the latter is 85mm×85mm×3mm, and placed in a box-type resistance furnace In the process, the resistance furnace heats up to 430°C at 10°C / min, holds for 1 hour, cools to 150°C with the furnace, opens the furnace door and air cools (the annealing at higher temperature ends), then heats up to 380°C at 5°C / min, and holds for 4 hours. Open the furnace door and air cool (lower temperature annealing ends).

[0048] 2) The annealing process after machining is as follows: firstly, the processed Al-50Si alloy shell and Al-27Si alloy cover plate are cleaned with acetone, and after air drying, they are respectively placed in a box-type resistance furnace, and the temperature of the resistance furnace is raised at 10°C / min to 420°C, keep warm for 0.5h, cool down to 150°C with the furnace, open the furnace door...

Embodiment 3

[0052] 1) The annealing process before machining is as follows: cut the Al-50Si alloy and Al-27Si alloy billets into blocks, the size of the former is 85mm×85mm×10mm, the size of the latter is 85mm×85mm×3mm, and they are placed in boxes In the type resistance furnace, the resistance furnace is heated to 405°C at 10°C / min, kept for 1.5h, cooled to 150°C with the furnace, opened the furnace door and air-cooled (higher temperature annealing ends), and then heated to 370°C at 5°C / min , keep warm for 4h, open the furnace door and air cool (lower temperature annealing ends).

[0053] 2) The annealing process after machining is as follows: firstly, the processed Al-50Si alloy shell and Al-27Si alloy cover plate are cleaned with acetone, and after air drying, they are respectively placed in a box-type resistance furnace, and the temperature of the resistance furnace is raised at 10°C / min to 400°C, keep warm for 1.5h, cool down to 150°C with the furnace, open the furnace door and air c...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an annealing process preventing high-silicon aluminum alloy from being cracked in the welding process, and belongs to the technical field of material processing. The annealing process includes the steps that the high-silicon aluminum alloy is placed into a furnace, is preserved at 390-450 DEG C, then is cooled to 120-180 DEG C along with the furnace and is air-cooled by opening a furnace door; the high-silicon aluminum alloy is warmed to 320-390 DEG C, is preserved at 320-390 DEG C and then is air-cooled by opening the furnace door to obtain the high-silicon aluminum alloy to be processed; the high-silicon aluminum alloy to be processed is processed according to the design size to obtain primary material to be welded; the primary material to be welded is placed into the furnace, is preserved at 390-450 DEG C, then cooled to 120-180 DEG C along with the furnace after heat preservation and is air-cooled by opening the furnace door; and the primary material to be welded is warmed to 320-390 DEG C, is preserved at 320-390 DEG C and then is air-cooled by opening the furnace door to obtain components to be welded. The components to be welded undergo laser welding to obtain finished products. The annealing process is simple and has obvious advantages for complex packaging shells with different wall thicknesses, and the performance of obtained the welded components is excellent.

Description

technical field [0001] The invention relates to an annealing process for suppressing welding cracking of high-silicon aluminum alloys, belonging to the technical field of material processing. technical background [0002] With the development of microwave devices in the direction of high power, light weight and high performance, more stringent requirements are put forward for the performance of packaging materials such as substrate materials, frames, casings and packaging covers. High-silicon aluminum alloy has high thermal conductivity, adjustable expansion coefficient, low density and good machining performance. It has good plating performance with gold, silver, copper and nickel, and can be welded with the substrate. It is becoming the third Representative of the next generation electronic packaging materials. The successful development of high-silicon aluminum alloy enables it to meet the requirements of communications, aerospace, national defense and other related elec...

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): C22F1/043
CPCC22F1/043
Inventor 王日初
Owner SHENZHEN RES INST CENT SOUTH UNIV