Apparatus and Method for Continuously Processing Long Bar by Heat Treatment Using Induction Heating
a technology of induction heating and apparatus, which is applied in the direction of heat treatment apparatus, manufacturing tools, furniture, etc., can solve the problems of reducing the amount of production, affecting the quality of the product, so as to achieve the effect of improving productivity
Inactive Publication Date: 2008-10-30
PARK CHUN YOUNG
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Benefits of technology
"The present invention provides an apparatus and method for continuously processing a long bar by heat treatment using induction heating. The method involves heating the material, cooling and quenching it, and then tempering it at a specific temperature range to improve its mechanical properties. The apparatus includes a continuous induction-heating quenching furnace and a continuous induction-heating tempering furnace. The method allows for the continuous processing of long bars of different diameters and lengths, improving productivity and uniform heating. The technical effects of the invention include improved structural and mechanical properties, enhanced heat transfer, and improved cooling efficiency."
Problems solved by technology
However, the manufacturing method has a great difficulty in manufacturing the long bar in a desired shape because the completed long bar is essentially deformed depending on heat gradient when it is quenched.
The manufacturing method has a drawback that an amount of production reduces and thus a loss of cost and time is caused because it performs a discontinuous process in such a manner that one material is fed and is discontinuously quenched and tempered and then, another material is again fed and is processed by heat treatment after one process is completely terminated.
Method used
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Embodiment Construction
[0019]Preferred embodiments of the present invention will be described in a more detailed manner with reference to the drawings.
[0020]FIG. 1 is a flowchart illustrating a procedure of the present invention. FIG. 2 is a diagram illustrating a whole apparatus of the present invention, As shown, first process is a material checking and preparing step (S1) of checking a circular rod shaped material 1 formed of carbon steel and low-alloy steel and preparing the material 1 by controlling a length of the material 1 and the like adaptively to a work environment.
[0021]The used material 1 uses carbon steel and low-alloy steel concurrently added with carbon (C), chrome (Cr), molybdenum (Me), and nickel (Ni). In detail, the material 1 mainly contains chrome (Cr) of about 1%, molybdenum (Mo) of about 0.15% to 0.3%, carbon (C) of about 0.2% to 0.45%, and nickel (Ni) of about 1.6% to 2.2%. The material 1 has a structure suitable for ship stay bolt and stud bolt, heavy-equipment cylinder rod and pi...
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Abstract
Provided is an apparatus and method for continuously processing a long bar by heat treatment using induction heating. The method includes checking and preparing carbon steel and low-alloy steel material; feeding the prepared material into a continuous induction-heating quenching furnace, heating the material at a temperature of 860° C. to 900° C., spraying a cooling water on the heated material, and completely quenching the material; horizontally conveying the quenched material by an automatic conveyor unit; feeding the conveyed material into a continuous induction-heating tempering furnace, heating the material at a temperature of 550° C. to 690° C., and completely tempering the material; checking the tempered material and correcting a deformed part of the tempered material; and relieving stress from the corrected material and finally checking the material.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a heat processing apparatus and method, and more particularly, to an apparatus and method for processing a long bar by heat treatment, for manufacturing ship stay bolt and stud bolt, heavy-equipment pin, tie bar, anchor bolt, and LM-guide. Much more particularly, the present invention relates to an apparatus and method for continuously processing a long bar by heat treatment using induction heating, for cooling and quenching a heated material by a continuous induction-heating quenching furnace, feeding the heated material into a continuous induction-heating tempering furnace by an automatic conveyor unit, and tempering the fed material by the continuous induction-heating tempering furnace to thereby continuously process a small-diameter material and a large-diameter material, thereby improving productivity and improving structural and mechanical properties by uniform heating.[0003]2. Des...
Claims
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IPC IPC(8): C21D9/52
CPCC21D1/10C21D1/18C21D1/42C21D1/667C21D9/00C21D9/0075C21D9/28C21D9/52C21D9/60Y02P10/25
Inventor PARK, CHUN YOUNG
Owner PARK CHUN YOUNG