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Heat treatment process for ZL101A aluminium alloy for automobile wheel hub

A technology for automobile wheels and aluminum alloys, which is applied in the field of heat treatment of cast Al-Si alloys, can solve the problems of insufficient precipitation phase strengthening and insufficient aging treatment, and achieve the effects of shortening heat treatment time, high work efficiency and low energy consumption

Inactive Publication Date: 2010-11-10
GUANGZHOU KINBON NON FERROUS ALLOY METALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the heat treatment time of this patent is shorter than the T6 treatment stipulated by the current national standard, the aging treatment is not sufficient, and the strengthening effect of the precipitated phase is not fully exerted.

Method used

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  • Heat treatment process for ZL101A aluminium alloy for automobile wheel hub
  • Heat treatment process for ZL101A aluminium alloy for automobile wheel hub
  • Heat treatment process for ZL101A aluminium alloy for automobile wheel hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cut 50×70×120mm from cast ZL101AA cast aluminum alloy billet 3 blanks. The BSK-L40 resistance heat treatment furnace (rated power 4KW) produced by Luoyang Best Electronic Materials Co., Ltd. is used. The temperature of the two resistance furnaces 1# and 2# was raised to 535°C and 170°C respectively in advance, and the fluctuation range of the furnace temperature was controlled within ±5°C. Put the intercepted alloy blank into heat treatment 1# furnace for solid solution treatment, and set the time for heating up to 535°C for 30 minutes, and the holding time for 120 minutes. After the solid solution heat preservation is over, the blank is moved to a hot water bath at 80°C. It takes 15 seconds to move from the oven to the hot water bath, and quench in the hot water bath for 3 minutes. Take the sample out of the hot water bath and wipe off the water on the surface of the sample with a dry cloth. Put the alloy billet into 2# resistance furnace for aging treatment, set t...

Embodiment 2

[0022] Prepare five φ12 test rods of ZL101AA alloy according to the national standard GB / T 1173-1995 "standard sample of casting aluminum alloy metal mold and pouring riser system". The BSK-L40 resistance heat treatment furnace (rated power 4KW) produced by Luoyang Best Electronic Materials Co., Ltd. is used. The temperature of the two resistance furnaces 1# and 2# was raised to 550°C and 165°C respectively in advance, and the fluctuation range of the furnace temperature was controlled within ±5°C. Put the test rod into heat treatment 1# furnace for solid solution treatment, and set the time for heating up to 550°C for 30 minutes, and the holding time for 90 minutes. After the solid solution heat preservation is over, move the test rods into a hot water bath at 60°C. It takes 30 seconds for all the test rods to move from the furnace to the hot water bath, and quench in the hot water bath for 1 minute. Take the sample out of the hot water bath and wipe off the water on the sur...

Embodiment 3

[0025] Cut 50×70×120mm from cast ZL101AA cast aluminum alloy billet 3 blanks. The BSK-L40 resistance heat treatment furnace (rated power 4KW) produced by Luoyang Best Electronic Materials Co., Ltd. is used. The temperature of the two resistance furnaces 1# and 2# was raised to 550°C and 180°C respectively in advance, and the fluctuation range of the furnace temperature was controlled within ±5°C. Put the intercepted alloy blank into heat treatment 1# furnace for solid solution treatment, and set the time for heating up to 550°C to be 40 minutes, and the holding time to be 120 minutes. After the solid solution heat preservation is over, the blank is moved into a hot water bath at 80°C, the time from being out of the furnace to being moved into the hot water bath is 18 seconds, and quenched in the hot water bath for 3 minutes. Take the sample out of the hot water bath and wipe off the water on the surface of the sample with a dry cloth. Put the alloy billet into 2# resistance...

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Abstract

The invention discloses a heat treatment process for a ZL101A aluminium alloy for an automobile wheel hub. The process comprises the following steps of: putting an as-cast blank into a solution treatment furnace for raising temperature, performing solution treatment at a solution temperature, taking the blank out of the solution treatment furnace, quenching the blank, putting the as-cast blank into an ageing treatment furnace for raising the temperature, performing ageing treatment on the blank at an aging treatment temperature; and after taking the blank out of the ageing treatment furnace, cooling the blank in the air medium. The heat treatment process is characterized in that: the solution treatment temperature is 525 to 550 DEG C; the heat maintaining time during the solution treatment is 60 to 120 minutes; the ageing treatment temperature is 165 to 180 DEG C; and the heat maintaining time during the ageing treatment is 90 to 180 minutes. The heat treatment process organically combines the short-time solution treatment and the short-time ageing treatment and fulfils the aim of low energy consumption and high work efficiency. At the same time, compared with the standard T6 heat treatment process, the heat treatment process can shorten the heat treatment time by over one time and guarantee that an alloy microstructure obtained through the solution treatment and the ageing treatment reaches an ideal state of the standard T6 treatment.

Description

technical field [0001] The invention relates to a heat treatment method for casting Al-Si alloys, especially a heat treatment method for casting ZL101A aluminum alloy wheels. The method can shorten the solid solution and aging treatment time in the heat treatment process, thereby improving the heat treatment production efficiency of aluminum alloy wheels. Reduce energy consumption. Background technique [0002] Al-7Si-Mg alloy is widely used in low-pressure casting aluminum alloy wheels. In order to meet the various mechanical performance requirements of alloy materials for automobile wheels, an important process is to implement T6 heat treatment. Table 1 lists the T6 heat treatment standard processes for Al-Si casting alloys for automobile wheels formulated by different countries. It can be seen from the table that the existing heat treatment process takes more than 10 hours of processing time, which is the longest process in the manufacturing process of die-casting alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/043
Inventor 彭继华唐小龙范卫忠聂铁安李绍康赵璞玉许德英李烈军杨传柱
Owner GUANGZHOU KINBON NON FERROUS ALLOY METALS CO LTD
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