81results about How to "Reduce the amount of sanding" patented technology

The invention relates to automatic bead welding equipment of a saddle-shaped pipe joint surface with a conical table and a welding method thereof, belonging to the technical field of automatic welding equipment and welding methods. The equipment comprises a station regulating device, an automatic welding gun manipulator, a laser positioner and an electrical control device. When the equipment works, the electrical control device controls the station regulating device and the automatic welding gun manipulator to be dynamically matched to complete the bead welding of an anti-corrosive layer of the saddle-shaped pipe joint surface with the conical table. The invention has the advantages that the electrical control device controls five-shaft linkage so that the end surface of the bead welding position of a workpiece is in a horizontal state; due to the adoption of a hot wire TIG (Tungsten Inert Gas) welding process and a horizontal continuous welding, the automatic bead welding equipment has good welding quality; the automatic bead welding equipment completely realizes automatic welding, reduces the polishing quantity of the bead welding surface and improves the utilization rate of a welding material; and voltage is added between a wire-feeding conducting nozzle and the workpiece through adopting a hot wire technique so that current flows through a welding wire between the wire-feeding conducting nozzle and the workpiece to heat the welding wire, and then the absorption of the welding wire for the heat quantity of an electric arc is reduced, thereby improving the welding efficiency.

The invention relates to a cutting tool, in particular to a knob removing tool used for removing rail welding beading. The invention provides the technical scheme that the knob removing tool for removing welding beading comprises a plurality of cutter bodies and locking mechanisms, which are connected end to end in sequence; wherein, the cutter bodies are mutually hinged end to end in sequence, or at least two adjacent cutter bodies therein are connected into an integrated body, and the other cutter bodies are mutually hinged; wherein, the locking mechanisms which are mutually matched and connected are arranged on the cutter bodies positioned at the front end and the rear end; cutting edges are arranged on the cutter bodies, after the cutter bodies positioned at the front end and at the rear end are mutually connected and locked, a section shape of the rail consists of the cutting edges of the cutter bodies, and the cutter bodies after locking comprise a left cutter body, a top cutter body, a right cutter body and a bottom cutter body. The knob removing tool is characterized in that a mounting hole is formed in the top cutter body, and a positioning component is mounted in the mounting hole, which is partially higher than the cutting edge of the top cutter body. The knob removing tool has the advantages that the main body of the rail can be not damaged in the knob removing process, the polishing quantity for workers is reduced, and the service life can be also prolonged.

The invention discloses a method for preparing a TA17 titanium alloy plate, which comprises the following steps: placing a TA17 slab in a heating furnace for heating; separating the titanium plate from the upper and lower stainless steel backing plates; rolling the slab for the first heat; After the rolling is completed, the slab is cut and blanked along the length direction according to the required width of the finished plate; the second fire rolling is carried out; the slab is slit and blanked along the length direction. The invention utilizes the principle that the heredity of the tissue formed by processing at high temperature can be changed at the same temperature to ensure the billet rolling temperature of TA17, reduce the obvious cracking phenomenon of TA17 titanium alloy plate caused by temperature drop in the traditional process, and also reduce the The amount of grinding in the later period is reduced, and the upper and lower backing plates can be used repeatedly, saving costs.

The invention discloses an efficient manufacturing method of a flattened bamboo laminated material. Under the action of the high temperature steam with the temperature of 120-200 DEG C, the bamboo material is rapidly heated to the softening temperature, after softening, the bamboo material is pressurized progressively by a steam tank built-in press or an external press, and the bamboo material orarc-shaped bamboo material with saw seams is flattened, the flattened bamboo board with high hardness and wide width is used as a raw material, and after drying, finalization, fine planing, sizing, blank assembly and hot pressing, the flattened bamboo laminated material with various blank structures and sizes is obtained. By performing high temperature steam softening on the bamboo material and reducing the processes of bamboo material inner wall notching or nail tooth rolling, the mechanical properties of the flattened bamboo laminated material are improved, the sanding amount of the flattened bamboo board is reduced, and the utilization ratio of the bamboo material is increased. The bamboo material softening treatment at high temperature and the continuous flattening process can reduce the complexity of bamboo processing and improve the production efficiency.

The invention discloses a weld joint force applying device and a method using the weld joint force applying device for improving the form and performance of a weld joint, and the weld joint force applying device is applied to the field of welded pipe machining. In the process of submerged-arc welding, a force applying block in the weld joint force applying device applies force on the weld joint which is still in a liquid state or semi-solid state stage, so that plastic deformation happens on the liquid state or semi-solid state weld joint according to the surface shape of the force applying block to generate a liquid forging effect, the interior of the weld joint after forging and pressing is even and compact, defects possibly existing in the weld joint are eliminated, impacting energy of a weld joint center and a heat effect area is improved, the form of the weld joint can be controlled, and weld joint polishing amount is reduced. The weld joint force applying device and the method well solve the problems that the weld joint form of a submerged-arc welded pipe is difficult to control, and critical defects may happen on the weld joint and can be widely applied to a submerged-arc welded pipe production line.

The invention aims at solving the problem that upset forging rods with large concentration ratio are difficult to obtain by an upset forging manner in the prior art, and provides a forming method of large-concentration-ratio upset forging components made of titanium alloy. The method comprises the following steps of: taking a bar material made of the titanium alloy, heating the bar material, and placing one end of the bar material in a forging die; performing forging with a forging machine till the ratio of the diameter of the large end of the deforming part of the bar material in the die to the diameter of the small end of the deforming part of the bar material is 1.1-1.5 and the large end and the part which does not deform form a bending angle of R30-R50; performing forging seven times so as to obtain an upset forging component with large concentration ratio. According to the method, the bar material made of the titanium alloy is used as a starting material, through seven times of upset forging, a titanium-alloy upset forging blank with a large end in a parallelogram cylinder shape, a rhombic cylinder shape, a cylindrical shape, or an elliptic cylinder shape and the like is formed, and the maximum concentration ratio reaches 7.1. Through the adoption of the method, the coaxiality of forging blanks and the surface quality of the forging blanks are improved; the grinding amount in subsequent procedures is reduced, and the qualification rate of final forgings is increased; the production efficiency is improved; the production cost is reduced.

The invention discloses water-based middle coating high in stone-chip resistance. The water-based middle coating is prepared from, by weight, 2-10 parts of oil-free saturated polyester, 15-35 parts ofmodified alkyd resin, 15-35 parts of water-based polyester resin, 2-10 parts of mixed etherified melamine resin, 2-10 parts of methylated amino resin, 1-5 parts of blocked isocyanate, 2-10 parts of polyurethane resin, 10.4-78 parts of pigment and filler, 0.6-21.5 parts of pH regulating agent, 2.61-9.3 parts of additive and 11.2-37 parts of solvent. The coating film gloss of the water-based middlecoating high in stone-chip resistance is effectively controlled to be about 75, and the gloss of the original formula is up to 85; the stone-chip resistant effect of original middle coating is judgedas Class 5 according to the Great Wall standards, and the original middle has the phenomenon that a steel plate is exposed; the stone-chip resistant effect of the water-based middle coating high in stone-chip resistance can reach Class 7, and the phenomenon that the steel plate is exposed does not occur.

The invention relates to an air-exhaust-type wind-sand flow gradient high sand-collecting rate device for a wind-sand environment wind tunnel. The air-exhaust-type wind-sand flow gradient high sand-collecting rate device is characterized in that a sand dust gradient collector is provided with wind-sand flow sand inlets, gradient channels communicate with the wind-sand flow sand inlets, collector placing openings are connected with the gradient channels, air-exhaust connecting pipes are mounted on gradient leaking nozzles exposed out of the collector placing openings correspondingly, the gradient leaking nozzles are perpendicular to the bed surface downwards and are connected with the air-exhaust connecting pipes, the air-exhaust connecting pipes are connected with wind-sand flow air-exhaust branch pipes, wind-sand flow separating tanks of the respective channels sleeve outlets of the wind-sand flow air-exhaust branch pipes, the wind-sand flow separating tanks communicate with weighingbottles, high-precision weighing sensors are placed at the bottoms of the weighing bottles, and the sand delivery amounts in the weighing bottles are measured by the high-precision weighing sensors. According to the air-exhaust-type wind-sand flow gradient high sand-collecting rate device, the measured sand delivery amounts are precise and errorless, and data support is provided for disclosing thechange law that a wind-sand flow passes through a flow field and for researching the relation between the wind speed and a soil structure as well as the relation between the soil water content and soil wind erosion.

The invention discloses a mould for casting quartz crucibles, which comprises a mould main body. The mould main body comprises a mould cover, a periphery side wall and a mould core arranged in the mould cover and the periphery side wall. A crucible casting area is formed among the mould cover, the periphery side wall and the mould core, an open hole communicated with the crucible casting area is arranged on the mould cover, and a casting port communicated with the crucible casting area is arranged on the periphery side wall. The invention further discloses a method using the mould to cast crucibles, which comprises the following steps of feeding quartz slurry into a vacuum casting tank to be vacuumed, communicating the vacuum casting tank with the casting port of the mould, and connecting a funnel with the open hole on the mould cover. Thus, the quartz slurry can fill the whole crucible casting area through the casting port, and then the mould is placed horizontally to be formed. The mould and the method can reduce forming time of crucibles and improve percent of pass of the crucibles.

A method for decreasing the power of hydraulic system for multi-layer hydraulic press used to produce raw boards features that the hydraulic oil source for board loading and unloading machines is introduced to the closing and pressing procedures of hot press, resulting in high closing and pressing speed, low capacity of hydraulic system, and low energy consumption.

The invention discloses a method for casting an air cylinder cover of a diesel engine for a chiller-free ship. The method comprises the following steps: calculating main hot spots of a casting piece at first; arranging insulation risers at the two large hot spot parts of the top surface of the casting piece; designing an inner pouring gate at the small hot spot part of the top surface of the casting piece for achieving feeding and exhausting in a solidification process and forming a top-down temperature gradient; finally solidifying molten metal in the risers. The method is simple, convenient, reliable and suitable for casting the air cylinder cover of the diesel engine for the ship.

The invention relates to a casting model, which is characterized in that: the bottom of the casting model, which is in contact with a model bottom plate, is provided with an embedded lug boss, and the lug boss is embedded into the model bottom plate; the lug boss and the upper plane of the model bottom plate form a parting surface, and the corner of the parting surface on the lug boss is provided with an inclined surface with a slope of 60 degrees; and the length of the bottom side of the inclined surface is 1.5mm, and a joint of the inclined surface and the parting surface is provided with an R1.5 fillet. Under the premise of unaffecting the size and the configuration of a casting, the model and the model bottom plate are designed into an embedded mode; and the corner of the parting surface is provided with the inclined surface with the slope of 60 degrees, and the inclined surface is a manually controllable large-slope flash. The structure is simple, the use is convenient, and sand burning, sharp corner and local tire falling phenomena are improved. The appearance quality of castings is improved, the fins, flashes and burrs of the castings are obviously reduced, the grinding amount can be reduced by over 80%, the production efficiency is increased by about 25%, the labor intensity of workers is greatly reduced, and the casting model is especially suitable for mass production on the crankshaft casting molding line.

The invention discloses a sandblasting device with adjustable nozzle size and dust reduction function. The device comprises a main box, wherein a sandblasting box is fixedly connected to the lower endof the right end surface of the main box, the sandblasting box is internally provided with a sand nozzle with an opening to the left, the right end wall of the sand nozzle is connected with a caliberturntable cavity, and the lower end wall of the caliber turntable cavity is connected with a positioning slider cavity. The size of the blasting caliber can be changed by rotating a caliber knob in the device, which makes the device more applicable. At the same time, when blasting smaller parts, the amount of sand required is reduced to reduce the cost of blasting and allow smaller parts to be subjected to more detailed blasting treatment, thereby avoiding surface damage caused by the parts being impacted by excessive sand, achieving the effect of reducing dust through the water mist generated by the water mist nozzle, and improving the working environment during sandblasting.