30results about How to "The size meets the requirements" patented technology

The invention relates to magnetic head automatic into-shell shaping equipment. The magnetic head automatic into-shell shaping equipment comprises a machine body; the top of the machine body is provided with a feeding moving slide table, an into-shell shaping mechanism, a discharging moving slide table and a touch screen controller, wherein the position, located on the rear sides of the feeding moving slide table, the into-shell shaping mechanism, the discharging moving slide table and the touch screen controller, of the top of the machine body is provided with a feeding pushing mechanism, andthe position, located on the front side of the into-shell shaping mechanism, of the top of the machine body is provided with a control switch; the touch screen controller is connected with the feedingmoving slide table, the into-shell shaping mechanism, the discharging moving slide table and the feeding pushing mechanism; the control switch is connected with the feeding moving slide table and thedischarging moving slide table; and the feeding moving slide table and the discharging moving slide table are both provided with magnetic head turnover plates. According to the magnetic head automatic into-shell shaping equipment, a magnetic head is subjected to automatic feeding positioning and punching and shaped to the specified dimension, and the punching and shaping steps of the magnetic arecompleted on the same jig.

The invention relates to a preparation method for an AuSn20 alloy brazing filler metal used for packaging an integrated circuit, which comprises the following steps: preparing gold and tin in proportions; placing the gold and tin into a casting furnace; sealing the furnace and vacuumizing the furnace; rising the temperature till the gold and tin are completely melted, controlling the temperature of the melt at 500-600 DEG C, refining for the purpose of alloying the gold and tin and degassing, and pouring the alloy in a graphite mould; placing an acquired AuSn20 alloy bar into a quartz tube and heating; sealing the furnace and vacuumizing till the pressure is 4-6Pa; rising the temperature and controlling the temperature rising; after melting the alloy bar, controlling the temperature of the melt to be 500-600 DEG C, and refining for 2-3 minutes; performing the melt-spinning process by using a vacuum quenching melt-spinning machine, controlling the temperature of the melt within 500-600 DEG C in the melt-spinning process, and introducing high-pressure nitrogen from an upper port of the quartz tube, wherein the nitrogen pressure is 10-15Pa; and spraying the alloy melt onto a speedily rotating metal wheel of the vacuum quenching melt-spinning machine from a bottom hole on the quartz tube, thereby acquiring a belt material. The belt material can be milled into a foil belt material or be punched into a slice or annular deeply processed product in the corresponding specification. By using the method, the product having excellent integrated circuit property can be prepared.

The invention discloses an annular cluster type DTH hammer, comprising a DTH hammer body, a cylindrical cavity is arranged in the DTH hammer body, a plurality of broken hammer heads are arranged on the lower end surface of the DTH hammer body, and the DTH hammer is The body is provided with an impact sub-hammer for driving the crushing hammer to impact the rock formation, and the body of the down-the-hole hammer is provided with a storage device for collecting and storing the crushed stone powder. Crushing, can improve work efficiency, and low energy consumption, can achieve rock formation crushing of large diameter pile holes, the overall work is pollution-free, directly use the high-pressure exhaust gas discharged from the impact hammer to discharge slag, the hammer body has small vibration, and does not damage the drilling rig equipment and The hole wall is of high quality.

The invention discloses a manufacturing technique of shrink-resistant quilt in washing. The manufacturing technique comprises the following steps: 1) choosing a washing craft as required and measuring quilting shrinkage of shell fabric and filler, washing shrinkage and fluffy rate after washing according to the washing craft; 2) measuring and calculating the size of materials before washing according to the measurement result of the step 1), and tailoring for reserve; 3) combining the shell fabric with the filler in operation, adopting a well-distributed method to make the shell fabric and the filler correspond evenly, and then sewing into a product; 4) washing the quilt which is made, drying and then gaining the shrink-resistant quilt in washing with standard size. The manufacturing technique of shrink-resistant quilt in washing has the advantages of being capable of solving a problem that the ordinary quilt can not be washed and being reasonable in the craftsmanship of quilts. The quilts after the manufacturing technique of shrink-resistant quilt in washing can be washed and has a good planeness after being washed. Besides, the size of the quilt meets the requirement. The quilts are equipped with better wearability by adopting different washing crafts in the washing process.

The casting technology for steel castings of the present invention particularly relates to a method for controlling the size of large thin-walled cylinder castings. The method includes the steps of: taking the centerline of the cylinder body of the large thin-walled cylinder castings as a reference line for parting; Preset shrinkage seams between the exhaust pipe of the profiled surface and the cylinder block; preset shrinkage seams on the left and right parted cylinders respectively; preset process corrections on the inner side of the pipe wall of the exhaust pipe; respectively on the left and right sides The preset process correction amount on the side wall of the gantry; 3D hollow sand cores are set in the sand molds of the exhaust pipes on the left and right sides respectively. The invention overcomes the problem of unqualified casting size caused by the traditional production process, and solves the problem of free shrinkage of the pipe wall by using the method of size shrinkage joints; the 3D hollow sand box is placed in the sand core, so as to improve the receding property of the sand core and ensure the smoothness of the pipe wall. Free shrinkage; effective casting solves the problem that the center of the tube wall becomes longer in the shrinking length direction; and solves the problem of the design sticking amount of the tube wall in the length direction.

The invention provides a free forging method for an oversized overweight forging through a 3-ton free forging hammer and relates to a forging method for an oversized overweight forging. The free forging method aims at solving the problems that the radian of a forging cannot meet the process requirements fundamentally during existing forging production through a 3-ton free forging hammer; when bent to a certain angle, the forging is clamped on an equipment bumper, and bending cannot be conducted; and deformation is hard to control. The free forging method comprises the steps that 1, a forging drawing is drawn, and the size of a blank is calculated; 2, drawing-out is conducted, and a long-strip forging is obtained; 3, large-angle bending forming is conducted, and a semi-ring rough forging is obtained; 4, small-angle bending forming is conducted, and a rough forging is obtained; and 5, forging trimming is conducted, so that the partition plate body forging is obtained. The free forging method has the advantage that the qualified rate of the forging is 100% and is mainly used for forging the oversized overweight forging through the 3-ton free forging hammer.