Hot extrusion die and hot extrusion integral forming method for special-shaped square pipe

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12090536
APP PUB NO 20240082897A1
SERIAL NO

17766664

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Abstract

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A hot extrusion die for a special-shaped square pipe includes a die cavity sleeve with a special-shaped cavity. A hot extrusion mandrel is arranged in the die cavity sleeve. An area between the die cavity sleeve and the hot extrusion mandrel forms a die cavity hole. A first extrusion diversion hole and a second extrusion diversion hole are arranged below the die cavity hole. An integral centroid of the die cavity hole is located at a circle center of a radial cross section of the die cavity sleeve. Further disclosed is a hot extrusion integral forming method for a special-shaped square pipe, including: heating and expanding a blank material; heating the blank material again after expanding; performing hot extrusion on the blank material; and cooling the formed special-shaped square pipe in air to a room temperature, and inspecting surface quality and mechanical properties of the special-shaped square pipe.

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Patent Owner(s)

Patent OwnerAddress
CENTRAL IRON AND STEEL RESEARCH INSTITUTE100081 NO 76 SOUTH COLLEGE ROAD BEIJING HAIDIAN DISTRICT BEIJING CITY BEIJING CITY 100081
HANDAN XINXING SPECIAL STEEL PIPES CO LTD76 XUEYUAN SOUTH ROAD HAIDIAN DISTRICT BEIJING 100081

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Jie Beijing, CN 164 618
Gao, Yuguang Beijing, CN 8 74
Liang, Jianxiong Beijing, CN 5 7
Liu, Fuqiang Beijing, CN 22 162
Liu, Zhenbao Beijing, CN 7 1
Sun, Yongqing Beijing, CN 8 4
Wang, Changjun Beijing, CN 13 4
Wang, Xiaohui Beijing, CN 234 2149
Yang, Zhiyong Beijing, CN 54 119
Zhang, Ailiang Beijing, CN 1 0

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