58results about How to "Stable processing technology" patented technology

The invention discloses a fire-retardant cable sheath material formulation and the preparation method thereof. The formulation comprises, by weight parts, 15 to 30 parts of chloroprene rubber, 15 to 30 parts of chlorinated polyethylene, 0.5 to 3.0 parts of zinc oxide, 0.5 to 3.0 parts of magnesium oxide, 0.2 to 1.0 parts of ethylene thiourea, 0.5 to 2.0 parts of dibenzothiazyl disulfide, 0.1 to 0.5 parts of tetramethylthiuram disulfide, 0.5 to 2.0 parts of N-phenyl-2-naphthylamine, 0.5 to 2.0 parts of stearic acid, 0.5 to 3.5 parts of paraffin, 1.0 to 5.0 parts of dioctyl phthalate, 5.0 to 15parts of carbon black with high abrasion resistance, 5.0 to 15 parts of semi-reinforced carbon black, 3.5 to 10 parts of calcium carbonate, 2.5 to 8 parts of bis(pentabromophenyl) ether, 1.0 to 3.0 parts of antimony trioxide, and 1.0 to 8.0 parts of aluminum hydroxide. The preparation method mainly comprises the following steps: plasticating, blending, mixing, thin-passing and calendaring and extruding the sheath.

Provided is a fan convex ring thin wall metal pipe, wherein the convex ring and the pipe fitting are connected together. The cross sectional shape is vertical angle sector or five-edge trapezium, wherein the convex ring edge line of the vertical angle sector near the connecting end is a vertical line and the opposite connecting end is the fan-shaped arc line, and that, the convex ring edge line of the five-edge trapezium near the connecting end is a vertical line and the opposite connecting end is the edgefold line. The processing method adopts the cart roll forming machine to shape the machining pipe fitting convex ring through the rolling method, namely using the internal mold core of the bobbin roller as the male die. The outside diameter of the internal mold core of the bobbin roller must be smaller than the inside diameter of the machining fittings. When the external mold core of the bobbin roller is used as the cavity die, the inside diameter of the external mold core of the bobbin roller must be larger than the outside diameter of the machining fitting convex ring. The processed fittings are put into the inner of the external mold core of the bobbin roller and the internal mold core of the bobbin roller is inserted to the processed fittings. The position of the male die and the cavity die convex ring are corresponding each other, wherein the male die and the cavity die rotate separately. At the same time, the male die applies force to the radial direction of the fittings shaped to the convex ring through rolling. The advantages of the invention are that: it has stable processing technology, simple operation, rigidly controlled quality of the processing fittings, and excellent rounding of the convex ring in favor of assemble, good tightness of the fittings, high pull strength.

The present invention designs a laser welding tinning device and welding method. The tinning device includes a back plate, a laser position correction device, a camera, a laser processing head, a push wheel pair, a connecting rod, a tin feeding nozzle, a displacement sensor, an angle sensor, a balance Spring, controller, residue box, the angle sensor detects the swing angle of the connecting rod, the displacement sensor detects the up and down movement position of the connecting rod, and the controller calculates the moving speed and acceleration of the detecting head according to the displacement and angle change value of the detecting head; laser welding When using the position of the probe head for closed-loop control of the laser working height, closed-loop control of the feeding speed of the tin wire by using the force of the probe head, and closed-loop control of the position of the laser following the tin wire by using the probe head angle, it can make up for the height difference of the solder joints. The impact of the effect reduces the fixed requirements for product processing and expands the application range of laser welding. It can prevent mechanical collision or burn the processing base material, the process is stable, and the rate of qualified products is improved.