Method for manufacturing titanium alloy sheet springs for smart drill pipes
The technology of a thin leaf spring and its manufacturing method is applied in the direction of manufacturing tools, metal processing equipment, forming tools, etc., which can solve the problems of low surface gloss, achieve high surface gloss, improve the good rate of finished products, and facilitate mass production.
Active Publication Date: 2013-01-02
扬州恒旺热交换器有限公司
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[0004] The purpose of the present invention is to overcome the shortcomings of low surface gloss and serious deformation of the titanium alloy springs produced by the current materials and processes, which affect the working strength of the springs, and provide a method for manufacturing titanium alloy thin-plate springs for intelligent drill rods. The method The flaky titanium alloy blank material is used for processing, and the blank is ground and cooled to obtain a high-gloss titanium alloy sheet. The sheet is cut and blanked by wire cutting and stretched by the upper and lower bidirectional composite tensile dies to obtain a titanium alloy sheet spring. Requires strength after heat treatment
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[0019] The present invention will be further described below in conjunction with accompanying drawing:
[0020] Such as figure 1 As shown, the manufacturing method of the titanium alloy leaf spring for intelligent drill rod provided by the present invention comprises the following steps:
[0021] First, the titanium alloy blank is ground. During grinding, the distance of sliding friction on the plane can be reduced and the wear can be reduced by changing the grinding wheel material, grinding wheel structure and clamping method. While grinding, the grinding surface is cooled by the coolant, and the heat generated in the grinding is taken away by the coolant. The temperature of the grinding surface is basically controlled at room temperature, and the surface of the final processed material is magnified by 50 times. Obvious processing transition traces, the titanium alloy flake 1 with surface roughness ≤ 0.6 μm, flatness < 0.05 mm, and thickness tolerance ≤ 0.05 mm is produced. ...
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Abstract
The invention provides a method for manufacturing titanium alloy sheet springs for smart drill pipes. The method includes machining titanium alloy blank sheets, cooling ground edges of the blank sheets to obtain high-glossiness titanium alloy sheets, blanking the sheets by linear cutting, drawing the sheets by an upwards and downwards two-way composite drawing die to obtain titanium alloy sheet springs, and finally treating the titanium alloy sheet springs by heat so that strength of the titanium alloy sheet springs meets requirements. Compared with the existing process for manufacturing the titanium alloy sheet springs, the method has the advantages that the titanium alloy sheet springs for the smart drill pipes, manufactured by the method, are high in surface glossiness, free of concealed surface cracks, free of fatigue breakage, are durable and firm; the dimension precision of the springs is increased and enough tensile strength is guaranteed by means of numerical-control linear cutting blanking; and by one-step forming carried out by the two-way drawing die, deformation coefficient of the springs can be reduced to the utmost extent, yield of finished products of the springs can be increased greatly, batch production is facilitated, and production efficiency is increased remarkably.
Description
technical field [0001] The invention relates to a method for manufacturing a spring, in particular to a method for manufacturing a titanium alloy thin-plate spring for an intelligent drill rod. Background technique [0002] High-strength titanium alloy sheet springs are mainly used for smart drill pipes in large-diameter "vertical drilling systems". The smart drill pipes are connected by multi-section drill pipes. The end adopts the magnetic induction drill pipe joint. The drill pipe joint is composed of a drill pipe groove, a ferrite magnetic induction ring, a titanium alloy sheet spring and a coil. The drill pipe groove is a concave groove opened between the inner and outer walls of the drill pipe. The ferrite magnetic induction ring is also in the shape of a concave groove. The magnetic induction ring is placed in the groove of the drill pipe, the titanium alloy thin spring is placed in the ferrite magnetic induction ring, and the coil is placed on the titanium alloy thin...
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IPC IPC(8): B21D22/20B21D37/10
Inventor 巩曰道陈修定唐柏芬
Owner 扬州恒旺热交换器有限公司
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