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53results about How to "Reduce manufacturing process" patented technology

Special welding rod used for surfacing reparation of high carbon steel type high-speed railway base tamping pick

The invention discloses a special welding rod used for the hardfacing reparation of a high carbon steel type high-speed railway base tamping pick. The coating of the special welding rod comprises the following chemical ingredients 1-3wt% of titanium dioxide, 25-35wt% of marble, 9-15wt% of fluorite, 2-4wt% of quartz, 2-4wt% of chalk, 5-7wt% of high-carbon ferrochrome, 2-4wt% of high-carbon ferromanganese, 3-5wt% of graphite, 1-3wt% of ferrosilicon, 6-8wt% of ferrotitanium, 5-7wt% of ferromolybdenum, 5-7wt% of cerium oxide, 3-5wt% of metallic nickel, 1-3wt% of ferrovanadium, 3-5wt% of tungsten carbide and 5-7wt% of ferrotungsten, and a core wire is an H08A steel core wire. Through adoption of the welding rod disclosed by the invention, the step of preheating before the welding can be avoided, and low-temperature tempering after welding is used for carrying out surfacing reparation or reproduction for the high-speed railway base tamping pick; because the surfacing metal is high-carbon steel, the surfacing surface has higher abrasion resistance and certain impact resistance and cracking resistance and the special welding rod is very convenient to use on site; the surface hardness range of the high-speed railway base tamping pick after surfacing is HRC (Rockwellhardness) 61-65; and the service life of the repaired high-speed railway base tamping pick is 2-3 times that of the integrally-manufactured tamping pick.
Owner:YANSHAN UNIV

Non-bearing independently driven electric axle

PendingCN109278517AReduce manufacturing processReduced manufacturing and assembly difficultyElectric propulsion mountingAxle unitsElectric driveSteel plates
The invention relates to a non-bearing independently driven electric vehicle axle. The non-bearing independently driven electric vehicle axle is characterized in that a steel bracket (2a) on each wheel end connection bracket (2) is connected with a corresponding steel plate spring on a vehicle frame; each wheel end connection bracket (2) is connected with a corresponding wheel end system (3), andthe two wheel end connection brackets are connected with an integral bearing axle shell (1) which deviates from the axis of the corresponding wheel end system; and the vehicle frame is fixedly connected with a drive motor (8), an integral structural gear box (9) and a differential mechanism (11), and first universal joints (7), oscillating half shafts (6), second universal joints (5) and hub shafts (4) are separately connected to two ends of the differential mechanism. The non-bearing independently driven electric vehicle axle is different from a common electric drive axle structure for a commercial light electric vehicle, an integrated independent electric drive structure and an integral bearing axle shell are adopted, the unsprung mass of a vehicle chassis is effectively reduced, the ground clearance of the electric drive axle is reduced, the advantages of convenient design, manufacture, installation, maintenance and the like are achieved, and in terms of cost economy, an independentsuspension structure with complex use and higher cost due to the use of independent drive is avoided.
Owner:HEFEI AAM AUTOMOBILE DRIVELINE & CHASSIS SYST

Method and equipment for processing polytetrafluoroethylene sealing ring

ActiveCN104527057AImprove processing efficiency and molding accuracyReduce manufacturing processButt jointPTFE - Polytetrafluoroethylene
The invention discloses a method for processing a polytetrafluoroethylene sealing ring. The method comprises the following steps: 1) setting a hot melting mold, wherein the hot melting mold comprises an upper mold and a lower mold, a segment of die cavity is formed between the upper mold and the lower mold, and the end face of the segment of die cavity is matched with the end face of a sealing ring needing to be welded; setting a welding mechanism on the hot melting mold, wherein the welding mechanism comprises a heating device corresponding to the die cavity, a filler area and a material pressing device; 2) putting both ends of a cut sealing strip in the die cavity of the hot melting mold according to the set specification of the sealing ring, and corresponding the butt joint sites at the both ends of the sealing strip to the welding mechanism; 3) putting corresponding modified fillers in the filler area of the welding mechanism, heating the filler area through the heating device, pressing the filler area through the material pressing device after reaching a set temperature, and maintaining the pressure for a period of time until the butt joint sites at the both ends of the sealing strip are fully fused with the modified fillers to form the sealing ring. The invention further discloses equipment for implementing the method.
Owner:广东科雷明斯智能科技有限公司

Tubeless thickness-unequal weld joint-free integral steel wheel and processing technology thereof

A tubeless thickness-unequal weld joint-free integral steel wheel comprises a rim and a spoke. The rim and the spoke are integrally formed and formed by spinning a steel plate. The spoke face of the spoke is one of a flat cone face, a convex cone face or a concave cone face. The tubeless thickness-unequal weld joint-free integral steel wheel adopts the steel plate integral spinning forming technology, the processes that the rim and the spoke of a traditional split type wheel are respectively manufactured, and then assembled and welded are omitted, a seal ring is not used, thus the manufacturing process is decreased and the air inflation leakage problem of the traditional wheel is fundamentally eliminated. The tubeless thickness-unequal weld joint-free integral steel wheel adopts the integral steel spinning forming technology, the problem that a wheel made of an aluminum material is low in strength and poorer in loading capacity when compared with the steel wheel is solved, manufacturing of a finished product of the wheel of which the cross section is unequal in thickness under the condition of equal strength is realized, the bearing capacity is improved and the weight reduction of the wheel is realized.
Owner:泉州市泰智机械发展有限公司

Intermediate articulated bogie with small-curve negotiation capability of six-axle high-floor light rail vehicle

An intermediate articulated bogie with small-curve negotiation capability of a six-axle high-floor light rail vehicle comprises a bolster device, a framework device, two wheelset devices, axle box devices, basic braking devices and a rotary device, wherein the bolster device is mounted on the framework device; a plurality of primary suspension devices are mounted at the bottom of the framework device; the axle box devices are separately arranged at the end parts of the two wheelset devices; the axle box devices are connected to the primary suspension devices; the basic braking devices are mounted on the wheelset devices; the rotary device is mounted on the bolster device; and the rotary device comprises a center pin rubber sleeve, a lower friction disk and an upper friction disk which arearranged on the center pin rubber sleeve in a sleeving mode, a center pin inserted in the center pin rubber sleeve, a lower articulated device connected to the center pin, and an upper articulated device connected to the lower articulated device through a spherical plain bearing. The intermediate articulated bogie has the advantages of simple structure, light weight, low cost, controllable rotaryresistance and wide application range.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Manufacturing method of assembled stationary blade partition plate of rotary drum steam turbine

The invention discloses a manufacturing method of an assembled stationary blade partition plate of a rotary drum steam turbine. The manufacturing method comprises the following steps: a partition plate sleeve is divided into m assembly groups, a positioning ring is arranged on at least one end surface of an outer ring of each stationary blade, and the circumferential assembly surface of each stationary blade is of a plane structure through which a radiation ray passes; the stationary blades in each assembly group comprise standard stationary blades and thickened-pitch stationary blades, grooves are machined in the front end surface and the rear end surface of the inner circle of the inner ring of the stationary blade to be assembled in the middle of each assembly group, and grooves are machined in the end surface, facing the stationary blades in the same assembly group, of the inner circle of the inner ring of the stationary blade to be assembled at the end of each assembly group; anda plurality of stationary blades are sequentially arranged in each assembly group and are fixed, the stationary blades in each assembly group are welded, and every two adjacent assembly groups are notwelded, so that the assembly of a first-stage partition plate is completed. According to the manufacturing method, tedious and redundant manufacturing procedures can be greatly reduced, the manufacturing period is shortened, the cost is reduced, and the assembly efficiency is improved.
Owner:CITIC HEAVY INDUSTRIES CO LTD +1
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