Solution to Porosity of Die Casting Aluminum Alloy

Release time:

2024-02-29

Characteristics and inspection methods:

Appearance inspection or flaw detection inspection after dissection, the stoma has a smooth surface and a round shape.

Cause:

① The introduction direction of alloy liquid is unreasonable or the flow speed of metal liquid is too high, resulting in injection; ② Prematurely block the exhaust duct or frontal impact wall to form a vortex to wrap the air, which is mostly generated in poor exhaust or deep cavity; ③ Due to unclean furnace charge or high smelting temperature, more gas in metal liquid is not removed, precipitated during solidification, and cannot be fully discharged; ④ The coating has a large amount of gas or is used too much, before pouring, the casting is not completely poured, so that the gas is involved in the casting, and the gas is mostly dark gray surface; the high-speed switching point is wrong.

Processing method:

① Adopt clean furnace charge, control melting temperature and exhaust treatment; ② Select reasonable process parameters, injection speed and high-speed switching point; ③ Guide metal hydraulic pressure balance, orderly fill cavity, and facilitate gas exhaust; ④ Exhaust tank and overflow tank shall have sufficient exhaust capacity; ⑤ Select coating with small gas emission and control gas emission.

Solution to Undercasting of Die Casting Aluminum Alloy

Solution of inclusion in die casting aluminum alloy

"Die Casting Weekly"-On June 2, 2022, Zhejiang Tianya Jiangtao Power Co., Ltd. ("Tianya Jiangtao") and Lijin Group Ningbo Lijin Technology Co., Ltd. ("Ningbo Lijin Technology") jointly held a signing ceremony for batch purchase of large die casting units and strategic cooperation. It is reported that Tianya Jiangtao will introduce 10 sets of 1250-6000T large intelligent die casting units from Ningbo Lijin Technology. Tianya Jiangtao Chairman Hu Ronghui, Vice President Zhao Hongfu, Factory Director Peng Wenjiang, Ningbo Lijin Technology General Manager Zhang Jun, Sales Director Zhou Kang and other leaders attended the signing ceremony.

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