39results about How to "Meet molding needs" patented technology

The invention relates to a processing technology of a large-radian arc-shaped spring. The processing technology is characterized by comprising the following procedures of: spring coiling: primary stress relief annealing; spring grinding; spring bending into an arc-shaped spring; secondary stress relief annealing; shot blasting; hot-strong pressing; sorting; angular rigidity and torque test; fatigue life test; and surface antirust treatment. According to the forming technology of the arc-shaped spring provided by the invention, the arc-shaped spring with the free angle of being more than 45 degrees can be effectively formed, the thermal relaxation rate of the spring is less than 2%, the instantaneous torque is large, the fatigue life is 1 million times, and the technical problems of low finished product rate and incapability for normal use of the large-radian arc-shaped spring in the prior art are solved.

The invention provides a milky white glass ceramic material and a preparation process thereof. The milky white glass ceramic material contains the following components: 67 to 74 percent of SiO2, 8.0 to 12 percent of Na2O, 0.3 to 2.5 percent of K2O, 6 to 9 percent of Al2O3, 3 to 5 percent of B2O3, 0.3 to 2 percent of CaO, 0.3 to 2 percent of ZnO, 0.5 to 2.5 percent of BaO, 0.3 to 2 percent of MgO, 2.5 to 4.8 percent of F and 0.5 to 2 percent of Li2O. The material is prepared by the following steps of: (1) weighing the following raw materials in part by weight: 4 to 9 parts of alumina powder, 0.5 to 3 parts of barium carbonate, 0.15 to 3.5 parts of calcium carbonate, 0.5 to 3 parts of fluorite, 0.5 to 4 parts of dolomite, 0.5 to 5 parts of potassium nitrate, 0.3 to 2 parts of magnesium oxide, 5 to 11 parts of borax pentahydrate, 5 to 10 parts of soda ash, 3.5 to 9 parts of sodium fluosilicate, 7 to 20 parts of albite, 1 to 5 parts of sodium nitrate, 50 to 70 parts of quartz sand, 0.25 to 2 parts of zinc oxide and 1 to 5 parts of lithium carbonate, and mixing the raw materials to obtain a batch; (2) putting the batch into an electric melting furnace, and performing all electric melting at the temperature of between 1,320 and 1,520 DEG C to obtain molten glass; (3) adjusting the temperature of the molten glass, and molding in a mould by a pressing or centrifugal method; (4) putting a molded product into an annealing kiln, and annealing at the temperature of between 530 and 620 DEG C for more than 60 minutes; and (5) performing toughening treatment after annealing.

The invention belonging to a low cost titanium alloy for sports products and other civil industries, relates to mezzo-forte high-ductility titanium alloy.The invention is characterized in that the components of the mezzo-forte high-ductility titanium alloy are aluminum of 2-4.5% by weight, molybdenum is 0.1-1.5% by weight, zirconium is 0.5-2% by weight, Fe is 0.1-1.5% by weight, and the rest is Ti and ineluctable foreign matters; the sum of each component content of the raw material is 100%. The manufacturing process comprises the following steps: batching according to a certain weight percentage, batch mixing and pressing to form consumable electrodes, performing a second smelting in the vacuum consumable arc furnace, and then making casting ingot into casting ingot boards.Because of the solution strength effect of aluminum, zirconium, molybdenum, vanadium, iron and the like, the titanium alloy of the invention can remain a definite strength level, the cost of the raw materials of the alloy can be reduced, cold working performance of the alloy is improved, the cold deformation amount is increased, the process flow is shortened, and correspondingly, the processing cost of the materials is reduced, processing performances of winding, bending, press forming and the like of the materials are improved, and shaping requirements of users can be further satisfied.

The invention discloses a test piece preparation mould special for a shearing test and a preparation method thereof, and relates to the technical field of road inter-layer binding performance tests. The invention solves the problems that no special forming mould for preparing a test piece is available and in the conventional method, the uniformity of the structures at the middle base and the surface layer is poor, the strength of the cut base layer of the test piece is reduced and the accuracy of the test result is affected. Two parallel side plates in the mould are connected with the two ends of a supporting bottom plate; two pairs of slots are oppositely formed in the inner walls of the two side plates; split bearing baffles are symmetrically inserted between two bearing baffles through the slots; the method comprises the following steps of: 1, uniformly stirring broken stones, water and cement and pouring the mixture into a mould provided with a second split bearing baffle; 2, controlling the speed of a pressure head so that the distance between the pressure head and the upper end of the second split bearing baffle is 40 mm; 3, coating priming oil on the test piece and then standing for 24 hours; 4, after the priming oil penetrates, arranging a first split bearing baffle, sealing with the broken stone and placing the sealed first split bearing baffle on the test piece for 4 hours; 5, pressing and forming; and 6, demoulding and preserving. The test piece preparation mould is used for a shearing test for measuring the road interlayer binding performance.

The invention provides a novel copper conductive printing ink. The novel copper conductive printing ink is prepared from following main raw materials: 45 to 55% of copper powder, 20 to 25% of an adhesive, 10 to 15% of a solvent, 4 to 6% of a coupling agent, and the balance an additive. IIngredient supplement of the novel copper conductive printing ink is reasonable; preparation cost is low; and the novel copper conductive printing ink is excellent in conductive performance and adhesive force, possesses excellent high temperature oxidation resistance, and is capable of satisfying moulding demands of a plurality of printed circuits.

The invention relates to a machining process for an arc spring. The machining process for the arc spring is characterized by comprising the following working procedures of spring coiling, first-time stress relieving, spring grinding, bending for the arc spring, second-time stress relieving, shot blasting, hot stressing, sorting, angle rigidity and torque testing, fatigue life testing and surface rust-proof treatment. The forming process of the arc spring is provided, and by means of the forming process, the arc spring with the free angle larger than 45 degrees can be effectively formed, it isguaranteed that the hot relaxation rate of the spring is smaller than 2 %, the instantaneous torque is large, and the fatigue life is one million times or above; and the technical problems that in theprior art, the yield of the large-angle arc spring is low, and the large-angle arc spring cannot be normally used are solved.

The invention discloses a spiral polytetrafluoroethylene bellows forming machine, which includes an inner mold component, an outer mold component, a rack, a clamping component, a transmission mechanism, a movement component, and a circuit control system. The clamping component is supported by the rack and is driven by the transmission mechanism. The clamping component includes a chuck with a horizontal axis and an inner hole. The inner mold component includes an inner mold sleeve, the inner wall of the inner mold sleeve's inner hole is provided with spiral corrugated grooves. The outer mold component includes an outer mold shaft and a fixedly disposed outer mold shaft connecting rod. The outer wall of the outer mold shaft is provided with spiral corrugated projections. The outer mold shaft connecting rod or outer mold shaft runs through the chuck inner hole and is in butt joint connection. The inner mold sleeve is disposed on the right side of the chuck, the spiral corrugated grooves of the inner mold sleeve is in coaxial nesting connection with the spiral corrugated projections of the outer mold shaft, and is coaxial with the chuck axis. The forming machine provided by the invention has the characteristics of simple structure, small volume and low cost. The outer mold shaft and the inner mold sleeve are convenient to adjust, and can be rapidly adjusted for forming products. Through control of the heating temperature, a good forming effect can be acquired.

The invention provides hard tube end forming equipment and a forming method. The hard tube end forming equipment comprises a feeding portion (10), a clamping portion (20) and an extrusion forming portion (30), wherein the clamping portion (20) is used for fixing a hard tube (40) to be formed, and the extrusion forming portion (30) is used for forming a tube end structure of the hard tube (40) to be formed. The hard tube end forming equipment is characterized in that a heating portion (50) is further arranged between the clamping portion (20) and the extrusion forming portion (30). The hard tube end forming equipment is stable in structure, high in reliability, low in cost, high in production efficiency, high in positioning precision and fine in forming quality.

The invention discloses a cold machining process of an ultradeep-hole long and thin part and a cold extruding stretching mold, and belongs to the technical field of cold extruding. According to the cold machining process, the bar is subjected to alramenting according to part needs, and a hollow short pipe blank is formed; and then a hole protection needle stretches into a center through hole of the hollow short pipe blank, the hollow short pipe blank is cold-extruded and stretched to the length needed by the part and an ultradeep hole of the long and thin part is molded. The invention furtherdiscloses a cold extruding stretching mold for the cold machining process of the ultradeep-hole long and thin part. According to the cold machining process of the ultradeep-hole long and thin part andthe cold extruding stretching mold, the problem that an existing ultradeep-hole long and thin part is large in molding difficulty, poor in precision, low in machining efficiency and the like is solved, the machining efficiency and quality of the ultradeep-hole long and thin part are greatly improved, and the machining adaptability to the part is high; and the cold machining process can be used for cold machining molding of various ultradeep-hole long and thin parts, is theoretically not limited by the draw ratio of the parts, and is especially suitable for machining the ultradeep-hole parts large in draw ratio.

The invention relates to a pipe bender with various processing radians. The pipe bender comprises a processing table, a power mechanism, a forming die head mounting structure and a limiting roller mounting mechanism are arranged on the upper surface of the processing table, the power mechanism is a hydraulic cylinder, the hydraulic cylinder is arranged in the long axis direction of the processingtable, the forming die head mounting structure comprises a sliding plate sliding in the long axis direction of the processing table, a plurality of sliding blocks are connected to the sliding plate ina sliding mode, each sliding block slides in the short axis direction of the processing table, a die head is installed on each sliding block, and the radians of the die heads connected to the different sliding blocks are different. The pipe bender can meet the forming requirements of multiple radians of a pipe body, the space is saved, and the equipment purchase cost is also saved.

The invention relates to 140 MPa grade cold rolled ultra-low carbon steel with a high bake hardening characteristic. The steel comprises the following components in percent by weight: 0.002-0.003% ofC, less than or equal to 0.3% of Si, 0.25-0.35% of Mn, 0.008-0.018% of P, less than or equal to 0.012% of S, 0.025-0.055% of Als, less than or equal to 0.003% of N, 0.007-0.013% of Nb and the balanceFe and inevitable impurities. A production method of the 140 MPa grade cold rolled ultra-low carbon steel with the high bake hardening characteristic comprises the steps of steelmaking, hot rolling, pickle-rolling and continuous annealing. In the annealing step, the soaking temperature is 840-850 DEG C and the insulation time is 75-94 s. The 140 MPa grade cold rolled ultra-low carbon steel produced by the production method has a relatively good forming ability at normal temperature and has a stable high bake hardening value greater than 50 Mpa, not only meets a forming demand of a part, but also meets a rigidity demand of the formed part, and shows a good comprehensive property.

The invention discloses a hair curler and aims at mainly solving the problem that most of traditional hair curlers cannot be adjusted or the structures of the traditional hair curlers are complex and cannot meet the requirements for different hair styles in actual application even if the traditional hair curlers can be adjusted. The invention provides the hair curler, expansion devices are arranged on positions corresponding to heating rods; and the expansion devices rotate to drive a first moving part to adjust the distance between the first heating rod and the second heating rod, and furthermore the requirement for forming different hair styles can be met. The hair curler is simple in structure and convenient to use.