5results about How to "Uniform width" patented technology

The utility model relates to a tubeless all-steel truck radial tire tread pattern structure which comprises a tire tread, and further comprises longitudinal straight groove patterns which are respectively and uniformly distributed from a central line to two sides in the circumferential direction of the tire tread and comprise a first longitudinal straight groove pattern and a second longitudinal straight groove pattern; the transverse inclined grooves are connected between the adjacent longitudinal straight groove patterns and comprise first transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns, second transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and Z-shaped transverse inclined grooves; the inclination direction of the first transverse inclined straight groove is opposite to that of the second transverse inclined straight groove, and the inclination direction of the second transverse inclined straight groove is consistent with that of the Z-shaped transverse inclined groove. Compared with the prior art, the utility model can effectively solve the problems of blockage of broken stones or foreign matters and low drainage efficiency, and has good guidance quality, drainage performance, road holding force, sideslip resistance and multi-road-condition adaptability under the condition of high-speed driving.

The application discloses a kind of synergic circulation pressure relief sintering regulation tungsten nickel iron binder phase distribution method, comprising the following steps: taking raw material and mixing according to mass percentage;Mixed raw material is loaded into mould, is placed in discharge plasma sintering equipment, and is sintered under vacuum or inert atmosphere condition;5~20MPa pre-pressure is applied in room temperature to first temperature interval heating process;When mould temperature rises to 1000~1280 DEG C, implement low-frequency stage formula circulation pressure relief-recompression procedure;Subsequently, the pressure is adjusted to 30~65MPa, and is kept at 1300~1500 DEG C for 2~12 min, then cooling, to get fine-grained tungsten nickel iron alloy.The application uses stage formula circulation pressure relief-recompression sintering method, promotes Ni-Fe binder phase repeated redistribution;Reduce the probability of local Ni-Fe binder phase over-wide enrichment and continuous binder phase pool formation;Increase the uniformity of Ni-Fe binder phase width distribution, improve organization consistency;It is favorable to simultaneously improve strength and plastic toughness matching.

The utility model relates to the field of automobile part machining, in particular to an automobile part rolling machining device. Comprising a base and a workpiece, the base is detachably connected with a plurality of mounting plates, the mounting plates are rotationally connected with a first roller set, a second roller set and a third roller set, the first roller set, the second roller set and the third roller set are matched with the workpiece, and the first roller set is used for pre-bending the two sides of the workpiece; the second roller set and the third roller set are used for further bending the workpiece, the mounting plate is rotationally connected with a first forming roller and a second forming roller, the first forming roller and the second forming roller are used for pre-bending the middle of the workpiece, the mounting plate is rotationally connected with a side pressing roller set, and the side pressing roller set is used for extruding the two sides of the workpiece. By the adoption of the bending device, a workpiece can be accurately bent step by step, and the size precision and the shape precision of a product are improved.

The utility model relates to the field of evanescent mode casting, in particular to a double-liquid double-metal hammerhead preparation mold based on evanescent mode casting. The preparation mold comprises a hammer head model, the hammer head model comprises a riser, a hammer head part, a hammer handle part and a temperature measurement pouring gate, the riser, the hammer head part and the hammer handle part are sequentially connected from top to bottom, the temperature measurement pouring gate is located on one side of the riser, and the bottom end of the temperature measurement pouring gate is connected with the hammer handle part and is close to the joint of the hammer handle part and the hammer head part; the casting sand box is provided with a cavity matched with the hammerhead model; the thermocouple is used for being inserted into the bottom of a cavity where the temperature measuring pouring gate is located; the ultrasonic device is used for being inserted into a cavity where the riser, the hammer handle part and the hammer head part are located; and the lifting device is in transmission connection with the ultrasonic device so as to drive the ultrasonic device to move in the vertical direction. By means of the manufacturing mold, the problem that casting defects exist when a double-liquid double-metal hammer is cast in an existing casting technology is solved, and the production cost is reduced.

An assembly for producing a one-sided laminated corrugated board web, comprising a first corrugating roller (6) and a second corrugating roller (8) for producing a corrugated web (4). It further comprises a glue application device (14) for applying glue to the crests of the corrugated web (4) and a pressure belt arrangement (21) which in turn comprises a pressure belt (24) for pressing a cover web (2) against the glued crests of the corrugated web (4) against which the corrugated web (4) is pressed against the first corrugating roller (6). Further, the assembly has a pressure belt engagement arrangement (31) comprising a pressure belt engagement device (35) which engages down at the pressure belt (24) during a corrugating roller change to minimize and / or eliminate at least a downward sag of the pressure belt (24) of the pressure belt engagement device (35) and at least one displacement device (32) which is connected with the pressure belt engagement device (35) to displace the pressure belt engagement device (35) between a pressure belt engagement position and an idle position.