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

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.

A high-resilience anti-blocking polyurethane bar screen is composed of tensioning hooks, a fixing plate, bolts, round steel and a polyurethane bar screen surface. The polyurethane bar screen surface is characterized in that a steel wire rope core polyurethane coated rubber bar is used as a reinforcing area, aramid fiber rope core polyurethane coated rubber bars are used as warps, frameless polyurethane coated rubber bars are used as wefts, and joint points are subjected to hot melting welding to form screening areas; and all screen pores of the screen surface are inverted-cone-shaped. The production process comprises the following steps: firstly, trapezoidal-section coated rods are produced on an extruder by taking a steel wire rope, an aramid rope or frameless different materials as corewires; secondly, hot melting welding is conducted on screen mesh joint points according to hole pattern requirements, the steel wire rope core polyurethane coated bar is arranged at the installation position of a tensioning hook, the aramid fiber rope core polyurethane coated rubber bars are set as the warps, the frameless polyurethane coated rubber bars are set as the wefts; and thirdly, the tensioning hook, the round steel and a fixing plate are tightened through bolts at the edge of the screen. The high-resilience anti-blocking polyurethane bar screen has the characteristics of high wear resistance, good elasticity, strong toughness, strong screen pore deformability and excellent self-cleaning effect.

The invention discloses a novel sand mold recycling reprocessing device comprising a base, a smashing box and a cleaning box. Props are fixedly installed at the bottom of the smashing box. A base plate is fixedly installed at the bottoms of the props and is fixed to the top of the base. The cleaning box is located on the right side of the top of the base. A material box is fixedly installed at thetop of the smashing box through two symmetrical racks. The left and right sides of the material box are each provided with a discharge pipe. The left and right sides of the smashing box are providedwith feed hoppers. First smashing teeth are arranged on the upper portions of the inner walls of the left and right sides of the smashing box, and a filter plate is fixedly installed between the middle inner walls of the smashing box. A motor box is fixedly embedded in the middle of the filter plate. A positive and negative motor and a fixed block are fixedly installed in the motor box and at thetop of the motor box correspondingly. A rotary shaft is fixedly installed at the output end of the positive and negative motor. Two symmetrical sliding rails are fixedly installed on each of the leftand right sides of the fixed block, and the ends, away from the fixed block, of the sliding rails are fixedly connected with the inner wall of the smashing box. According to the novel sand mold recycling reprocessing device, washing is conducted with hot water after smashing, and quality of molding sand is improved.

The invention discloses an annular cluster-type down-hole hammer. The annular cluster-type down-hole hammer comprises a down-hole hammer body; a cylindrical cavity is formed in the down-hole hammer body; a plurality of crushing hammer heads are arranged on the lower end surface of the down-hole hammer body; an impactor hammer for driving the crushing hammer heads to impact a rock layer is arrangedin the down-hole hammer body; and a storage device for collecting and storing crushed stone powder is arranged on the down-hole hammer body. The rock layer is crushed by using an impacting and crushing principle of the impactor hammer, so that the operation efficiency can be improved, and the energy consumption is reduced; and the crushing of a rock layer with a large-diameter pile hole can be realized, the overall work is pollution-free, slag is discharged directly with high-pressure exhaust gas discharged by the impactor hammer, the vibration of the hammer body is small, a drilling rig device and a hole wall are not damaged, and the hole forming quality is high.

The invention provides a machining mold of a seat slide rail bracket capable of solving the technical problem that a traditional mold cannot guarantee the bracket size and the hole position degree. The machining mold comprises a shaping device; and the shaping device comprises a main body shaping mechanism for shaping a main body of a bracket. The machining mold is characterized in that the shaping device further comprises a side shaping mechanism for inwards shaping the side part of the bracket.

The invention discloses a manufacture method of an automobile coating product protection cover. The manufacture method of the automobile coating product protection cover comprises the following steps: selecting an automobile coating product protection cover sheet; adopting a plastic sucking mold, mounting the mold on the automobile coating product protection cover sheet, preheating a mold mounting temperature control box, and then properly clamping the automobile coating product protection cover sheet by using powerful pliers and angle iron; setting process parameters for controlling temperature and pressure of the temperature control box, and putting the automobile coating product protection cover sheet in the temperature control box; heating and softening the sheets, then opening the temperature control box, taking out the heated sheet, and carrying out plastic molding by using a vacuum pump; cooling and forming. In the treatment process, the sheet surface is free of spot, ripple, scratch and crack, and obvious in chromatic aberration, and is smooth and flat; meanwhile, products can be molded in place, are uniform in wall thickness, free of corner wrinkle and free of edge warping; the size of the sheet is in accordance with the requirement.

The invention relates to a hot riveting method for a TC4 titanium alloy pin. The hot riveting method is characterized by comprising the following steps: 1, a to-be-riveted plate-shaped part and a to-be-riveted pin are cleaned; 2, the plate-shaped part is installed on a riveting tool and leveled, and the riveting tool is composed of an upper electrode assembly and a lower electrode assembly; 3, the pin is clamped, the heating current, the heating time and the riveting pressure of a projection welding machine are controlled to rivet the plate-shaped part so as to guarantee the size and the appearance of the plate-shaped part and the torque requirement of 4-9 Nm between the pin and the plate-shaped part, then the plate-shaped part is taken down, wherein the riveting pressure ranges from 0.06 Mpa to 0.14 Mpa, the heating time is 0.14 s, and the heating current ranges from 4.0 KA to 4.6 KA; and optionally 4, visual inspection is conducted on the riveted plate-shaped part, and torque test is conducted on the riveted first and last test pieces.

The invention relates to the technical field of aluminum flat pipe production equipment and discloses a straightening mechanism and a flat pipe cutting device. The straightening mechanism comprises afirst rolling wheel, a second rolling wheel and a detecting assembly, wherein the first rolling wheel is rotationally connected to a first support; the second rolling wheel is rotationally connected to a supporting assembly, and the supporting assembly is connected to a second support in a sliding manner; and the detecting assembly comprises a balancing weight, a tooth belt and an encoder, one endof the tooth belt is connected with the supporting assembly, and the other end of the tooth belt winds around the encoder to be connected with the balancing weight. The straightening mechanism is arranged between an uncoiler and a cut-off machine, a flat pipe is conveyed through the first rolling wheel and the second rolling wheel, the flat pipe is pulled to be straight after passing through thefirst rolling wheel and the second rolling wheel, and the size of the cut flat pipe meets the requirement. The tension change on the second rolling wheel is detected through the detecting mechanism, when the diameter of a material roll on the uncoiler is reduced, by adjusting the rotation speed of the uncoiler and the cut-off machine, the tension of the flat pipe is kept balanced, and stable feeding is achieved.

The invention relates to a production process of a smearing type automobile air conditioner compressor piston. The production process comprises the following specific steps that a center hole is punched in a piston blank, and turning the outer circle of the piston blank punched with the center hole;r milling and outer circle rough grinding treatment are sequentially conducted on the piston subjected to outer circle turning; the piston is subjected to sand blasting treatment; the piston subjected to sand blasting is cleaned, cleaned and dried; coating liquid is smeared on the outer circumference of the piston to form a coating; the coating liquid is smeared in the R angle of the piston to form the coating; the piston is preheated and dried; the dried piston is subjected to accurate grinding treatment; redundant parts at the two ends of the dried piston are cut off; ball socket milling treatment is conducted on the piston; and the piston obtained after ball socket milling is cleaned and dried. The production process of the smearing type automobile air conditioner compressor piston has the beneficial effects that a coating process is adopted, so that the coating quality of the coating can be ensured, the binding force and the wear resistance of the coating are effectively improved, the coating liquid can be saved, the cost is saved, and the production process of the smearing type automobile air conditioner compressor piston is environment-friendly.

The invention relates to the technical field of ships, in particular to a drill floor BOP hanging beam assembling method. The drill floor BOP hanging beam assembling method comprises the following steps of modeling, material feeding and assembling, wherein the modeling step comprises the step that during structural modeling, shrinkage amounts of preset sizes are added to a first panel, a second panel, a first web plate and a second web plate in the length direction; the material feeding step comprises the steps that in the material feeding process, the straightness of the first panel, the straightness of the second panel, the straightness of the first web plate and the straightness of the second web plate are checked and corrected; in the assembling process, an even number of welders are adopted for left-right symmetrical welding; in the assembling process and after assembling is completed, straightness, flatness, perpendicularity and the like are detected; and correction is conducted in time when out-of-tolerance is found. Therefore, according to the drill floor BOP hanging beam assembling method, errors are eliminated from the aspects of design, material feeding, assembly and the like, and then the precision requirements such as the size, the straightness and the levelness of the hanging beam are guaranteed, reworking operation caused by insufficient precision is avoided, and therefore, a large amount of working hours and energy consumption are saved, and the operation efficiency is improved.

The invention discloses automatic lens fusing equipment for a medical stainless steel wire. The automatic lens fusing equipment is characterized in that a machine base and a rotating part arranged on the machine base are included, the rotating part is provided with clamping dies, an aligning part is arranged behind the rotating part, and a fusing electrode is arranged above the rotating part. According to the equipment, for the technical requirements of a gastroscope tube, an operator can precisely position the installing position of a stainless steel wire rope to be machined conveniently through the aligning part, an installing ball is automatically fused through the fusing electrode, it is guaranteed that the size of the installing ball obtained through fusing meets the requirement while the machining efficiency is improved, and then the gastroscope assembling effect is guaranteed.