Method for preparing base of vertical annealing furnace

A vertical annealing furnace and annealing furnace technology, applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of weak elongation, insufficient tensile strength and compressive strength, shrinkage cavity, etc., and achieve tensile strength The effect of strengthening strength and compressive strength, improving mechanical properties and flexibility, and hindering the formation of carbides
CN102489669AActive Publication Date: 2012-06-13SICHUAN CHUANJIAN PIPES
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN CHUANJIAN PIPES
Publication Date
2012-06-13
Patent Text Reader

Abstract

The invention discloses a method for preparing a base of a vertical annealing furnace. The method provided by the invention is characterized in that a lost foam casting technology is adopted; molten iron is injected into a mold from the bottom to form a casting; a pour-over spheroidizing technology is adopted; and a spheroidizing inoculation technology is adopted. The base obtained by the method has advantages of good mechanical properties, good flexibility, high tensile strength, high compression strength, low rejection rate, high heat resistance, high fatigue resistance, and large elongation.
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Description

technical field

[0001] The invention discloses a method for preparing a base of a vertical annealing furnace, and particularly belongs to a method for preparing a base of a vertical annealing furnace. Background technique

[0002] At present, there are two main annealing processes used in hot mold centrifugal large tubes: desktop annealing furnace and vertical annealing furnace. Due to the high heat utilization rate of the vertical annealing furnace, the cost of natural gas consumption is better than that of the desktop, so it is still popularized and used today.

[0003] However, the base of the current vertical annealing furnace does not use the lost foam casting method, let alone the bottom injection method, so there will inevitably be a high scrap rate, insufficient mechanical properties, low flexibility, insufficient tensile strength and compressive strength, and Insufficient heat resistance and fatigue resistance, weak elongation. General manufacturers mainly choose ...

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
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