Process for manufacturing end plate for use in pretensioning method prestressed concrete pipe pile

A technology of concrete pipe piles and manufacturing methods, which is applied in the direction of sheet pile walls, buildings, and foundation structure engineering, etc., can solve the problems of high metal consumption of casting end plates, many processes of rolling end plates, and high metal consumption, so as to achieve small investment, The effect of short payback period and low overall energy consumption

Inactive Publication Date: 2007-04-25
MAANSHAN HUAKE IND
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for manufacturing end plates for pre-tensioned prestressed concrete pipe piles, to solve the problem of many processes of rolling end plates, high energy consumption, high metal consumption, high price and high metal consumption of cast end plates and lack of productivity

Method used

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Embodiment Construction

[0024] Qualified steel scrap, steel scrap, ferrosilicon, and ferromanganese are put into the electric furnace for melting according to a certain proportion. The melting temperature is 1600-1700℃. Before casting, the surface of the metal mold is coated with a layer of refractory paint and preheated to a certain temperature before pouring. The pouring temperature is controlled between 1550-1500°C, the pouring speed of the double-line multi-type horizontal centrifuge is 320-380γ / min, and the mold speed is 180-220γ / min (lower than the conventional centrifugal manufacturing speed) , the casting speed is too fast to easily produce longitudinal cracks). When the casting is cooled to about 950°C, it can be removed from the mold, and sent to the friction press for molding and punching. The temperature of hot stamping should not be lower than 780°C. And other corresponding equipment for further processing according to user requirements. Finally, after passing the inspection and grindi...

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Abstract

The invention discloses a production method of end plate for pretensioned prestressed concrete pile. Crewel polytype horizontal centrifuge casting-stamping technology is applied in the method. Firstly, regular waste steel, silicon iron, manganese iron by measuring are enclosed into electric cooker with the certain proportion and melt; secondly, residue is cleaned after molten steel is regular by measuring and it is casting in Crewel polytype horizontal centrifuger; thirdly, cast is cooled to 920DEG C-980DEG C and demould starts, and cast is transmitted in forcing press to died and pierced, where the piercing temperature is not less than 780DEG C; finally, it is machined furthermore by the user demand after cast is cooled in stack. The invention is provided with short flow, simple equipment and low cost so on.

Description

technical field [0001] The invention relates to a method for manufacturing an end plate for a pretensioned prestressed concrete pipe pile. Background technique [0002] Pre-tensioned prestressed concrete pipe pile is a new type of foundation pile, which has high single pile bearing capacity, good driving resistance, strong penetration, short preparation time in the early stage of construction, convenient construction, easy pile deployment, and single pile can be connected It is widely used in industrial and civil buildings, railways, highways, airports, ports and water conservancy projects. The development of the pipe pile industry has also driven the development of the end plate industry for pipe piles. In recent years, a new industry has formed in China. According to the 2005 No. 7 announcement of the National Development and Reform Commission of the People's Republic of China, the People's Republic of China Building Materials Industry Standard JC / T974-2005 "End Plates fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/58C22C37/10
Inventor 李忠祥黄贞益卢秉林
Owner MAANSHAN HUAKE IND
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