32results about How to "Guaranteed full filling" patented technology

The invention discloses a technical method for forming a semi-axle housing tube for a large-diameter flange. The technical method comprises the following steps of: sawing hot-rolled round steel serving as a blank, heating, and upsetting by using an extruding machine; performing rotary forging for forming by using a rotary forging press; and performing forward extrusion once and backward extrusion to form a forged piece of the semi-axle housing tube. According to technical method, in the maximum process step of forming force required by the semi-axle housing tube, the flange is formed by the rotary forging press; and only an outer step axle and an inner step hole are formed when the head flange is formed by the rotary forging and is extruded. The technical method has the advantages that: the full filling of flange corners is ensured effectively, the investment cost of equipment is reduced effectively, the process difficulty of the subsequent extrusion process step is reduced, the coaxiality of finished products is easy to ensure, and the production cost of the forged piece is reduced while the yield of the products is improved.

The invention provides a novel 4Al3 aluminum alloy used for vacuum soldering, which can solve the problems of high soldering temperature and undesirable soldering quality of the traditional 4Al3 aluminum alloy used for vacuum soldering, and can solve the problem that a surface oxide film of a workpiece can be removed only by Mg-contained soldering flux by the 4Al3 aluminum alloy to carry out vacuum soldering, and the vacuum soldering technology can be simplified. The novel 4Al3 aluminum alloy is characterized by comprising the following raw materials according to 100 parts by weight: more than 8.2-9 parts of Si, 0-6 parts of Fe, 0-0.2 part of Cu, 0-0.2 part of Mn, 0.08-0.2 part of Mg, 0-0.2 part of Zn, 0-0.15 part of Ti, 0-0.15 part of other impurity trace elements and the balance of Al.

The invention provides a plant cushion for filling plant growing mediums. The plant cushion comprises a plurality of filling bags which are integrally sewed; each filling bag is formed by a bottom layer and a surface layer, which are sewed together; the surface layer of each filling bag is provided with a feeding opening; and each filling bag is filled with the plant growing mediums. The invention further provides a method for applying the plant cushion to treat a slope surface. The plant cushion disclosed by the invention is used for filling slurry-shaped plant growing mediums into filler bags; the construction is simple and the efficiency is high; water in slurry-shaped materials can be extruded to flow out in a filling process so as to guarantee that the filling bags are fully filled; and compared with a plant growing medium spraying greening technology, the efficiency is improved by 2-3 times and the cost is comprehensively reduced by 30-40%. After the construction is finished, the gap between the bags can be used for storing materials including dry branches and fallen leaves, humus, soil and the like and the water and soil loss prevention effect is obvious. Plant seedlings can grow from surface-layer materials; and meanwhile, technologies of transplant, cottage and the like are combined so that plant varieties are enriched.

The invention relates to a surface cleaning method before brazing repairing of a single crystal turbine guide vane crack. The surface cleaning method before brazing repairing of the single crystal turbine guide vane crack is characterized in that a method combining physics and chemistry is adopted to remove a carbon deposition layer and an aluminizing layer on the surface of a vane, to remove an oxidation film on the surface of the crack and to provide a clean surface for final brazing repairing. The surface cleaning method comprises the steps of (1) sand blasting treatment, (2) chemical cleaning, (3) aluminized coating stripping, (4) gas phase fluorinion cleaning, and (5) vacuum purification treatment. The surface cleaning method before brazing repairing of the single crystal turbine guide vane crack is suitable for an alitizing single crystal high temperature alloy turbine guide vane, the vane after being cleaned through the surface cleaning method has a good brazing repairing effect, and a repaired vane body has no recrystallization; the surface cleaning technical problem of single crystal high temperature alloy turbine guide vane non-recrystallization repairing is solved, and conspicuous innovativeness is achieved.

The invention discloses a copper brazing manufacturing method of a fuel distribution pipe. The method is characterized in that press fitting and projection welding, instead of argon-arc welding or laser welding, are carried out to position, so that the uniformity of welding gaps among parts can be effectively improved, and the consistency of the quality of the welding gaps formed after the copper brazing can be ensured; a built-in copper ring or copper sheet is used and replaces externally-paved copper adhesive, so that copper can permeate from inside to outside during the copper brazing process, and as a result, the welding gaps can be fully filled with the copper adhesive; in addition, the flowing conidtio of the copper adhesive in the welding gaps can be inspected through the appearance rather than a destructive way, so that he production cost can be reduced. The invention discloses a radial connecting part of the main pipe.

The invention discloses a multi-directional numerical control linkage precision forming process of a transmission planetary carrier. The process is characterized in that a heated metal bar is formed through numerical control linkage of an upper punch, a front punch, a rear punch, a left punch and a right punch in five directions, and a precise forging of the transmission planetary carrier with thecomplicated shape is prepared in a single station and through one-time heating and multi-directional forming; and the front punch, the rear punch, the left punch and the right punch in a die are arranged in four side square holes in a female die, and are not separated all the time in the forming process. The forging forming planet carrier forge piece is small in machining allowance, the production efficiency is greatly improved, the cost can be reduced to a great extent, and a certain foundation can be laid for mass production of the current part.

The invention discloses a spiral bevel gear swing rolling formation method. A spiral bevel gear is formed in a swing rolling manner by a swing rolling mold; the swing rolling mold includes a swing head and a swing rolling lower mold oppositely arranged up and down; the swing head performs a circular trajectory motion; the swing rolling lower mold performs an upward linear feeding motion; and the swing rolling formation method comprises the following steps: a spiral bevel gear blank is placed between the swing head and the swing rolling lower mold; a tooth shape of the spiral bevel gear is formed through swinging of the swing head; and the spiral bevel gear and a back part opposite to the tooth shape are formed by the swing rolling lower mold. The spiral bevel gear swing rolling formation method can refine grains and densify streamlines to greatly improve the gear mechanical performances, is low in forming force, high in tooth shape precision, long in mold life and liable to demold, and has the advantages of high production efficiency, high material utilization rate and low cost.

The invention relates to a crack filling method of a compound bent pipe and the abrasion-resistant compound bent pipe, and belongs to the technical field of machining. The crack filling method of the compound bent pipe and the abrasion-resistant compound bent pipe resolve the problems that an interval exists between a lining and an outer shell in an existing abrasion-resistant compound bent pipe, so that in the use process, more than 90 percent of compound bent pipes will crack and can not be used any longer. The crack filling method is characterized in that (1) the lining and the outer shell are combined in a sleeved mode, and an injection hole is drilled in the outer shell; (2) two flanges are adopted and respectively comprise a flange inner ring and a flange outer ring, and after each flange inner ring and the corresponding flange outer ring are combined in a sleeved mode, the outer ends are welded into a whole; (3) the outer shell is welded to the flange outer rings, the lining and the flange inner rings are in clearance fit to form an assembly interval crack; (4) paste is injected from the injection hole through an injection gun to fill the interval between the lining and the outer shell; (5) after the paste is cured, plug welding is carried out on the injection hole. The crack filling method of the compound bent pipe has the advantage that the high chromium cast iron compound bent pipe is not prone to cracking when subjected to an impact load, and is mainly used for manufacturing the abrasion-resistant compound bent pipe.

The invention discloses a spur gear radial extrusion molding die and method, comprising an upper die, a lower die and a radial extrusion die fixed between the upper and lower dies, the elastic body of the upper die and the cylindrical wedge The pressure motor beam is connected, in which the elastic body is embedded in the upper end of the cylindrical wedge, and the lower mold is fixed on the press table. When extrusion is formed, the upper mold and the lower mold are firstly fixed to fix the gear blank, and then the press compresses it. At the same time, the cylindrical wedge continues to move downward under pressure, and transmits the force to the side punch, so that the side punch moves radially in the upper and lower chute plates and the side mold fixing plate, and completes the radial extrusion of the gear. Forming, the press is picked up, the cylindrical wedge moves upward, and the side punch moves in reverse under the restoring force of the spring bolt, the mold is fully opened, and the gear part is taken out. The invention reduces the load on the mold, improves the life of the mold, fills the tooth cavity more fully, and improves the production efficiency and qualified rate of the gear.