1776 results about "Cast iron" patented technology

The invention discloses a fluoride salt-free nitrate-free cast iron enamel semitransparent glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, sodium carbonate, potassium carbonate, calcium carbonate, potassium feldspar, zinc oxide, lithium carbonate, zirconium silicate, titanium dioxide, aluminum oxide, trisodium phosphate, antimony oxide, magnesium carbonate and barium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and low-temperature firing adaptability, and is suitable for cast iron matrixes, the firing temperature is 740-760 DEG C, and the firing time is 2-3 hours. The method can be used for producing green and environment-friendly enamel products.

The invention discloses a preparation method of a heat-resistant aluminum alloy, the heat-resistant aluminum alloy comprises the following materials: 2.5 wt%-4.5 wt% of Cu, 7.5 wt%-9.5 wt% of Si, 0.5 wt%-1.0 wt% of Zn, less than or equal to 0.2 wt% of Mn, 0.3 wt%-0.5 wt% of Mg, less than or equal to 0.25 wt% of Fe, 0.01 wt%-0.045 wt% of Sr, 0.05 wt%-0.25 wt% of Mo, 0.05 wt%-0.25 wt% of W, 0.03 wt%-0.15 wt% of V, and the balance of Al and impurities, and the total content of the impurities is less than or equal to 0.25 wt%. According to the method, the range of 2.0 Zn + 1.5 Cu + 0.5 Mg and the range of 10 (Mo-W) / Si are designed, meanwhile, the design range of FeV and the smelting preparation process are controlled, W and Si elements react and are combined to generate a WXSiy phase, WXSiy has the excellent performance of high melting point (2220 DEG C), high wear resistance, corrosion resistance, oxidation resistance and the like, and after a formed aluminum alloy component is subjected to T6 heat treatment, the tensile strength is larger than or equal to 450 MPa, the yield strength is larger than or equal to 380 MPa, the percentage elongation after fracture is larger than or equal to 2.0%, and the hardness is larger than or equal to 135 HB. According to 250 DEG C high-temperature mechanical property tests, the tensile strength is larger than or equal to 280 MPa, the yield strength is larger than or equal to 220 MPa, the percentage elongation after fracture is larger than or equal to 4.0%, the hardness is larger than or equal to 85 HB, the comprehensive performance is higher than that of a conventional aluminum alloy forming component, and the aluminum alloy can be widely applied to parts such as heavy commercial automobile flywheel shells, gear chambers and cylinder covers working under the high-temperature working condition, replaces cast iron and achieves light weight and weight reduction.

A coke product configured to be used in foundry cupolas to melt iron and produce cast iron products is disclosed herein. In some embodiments, the coke product has a Coke Reactivity Index (CRI) of at least 30% and an ash fusion temperature (AFT) less than 1316° C. Additionally or alternatively, the coke product can comprise a fixed carbon content of at least 80% and / or a volatile matter content of no more than 1.0%.

The invention discloses a safety inspection and replacement tubular column and a using method thereof. The safety inspection and replacement tubular column comprises an oil pipe, at least three water distributors are arranged on the oil pipe, a packer is arranged between every two water distributors, each water distributor corresponds to a water injection layer, the lowest packer is a second-type packer, and the remaining packers are first-type packers; the first type packer is provided with a first back-off safety part, and the second type packer is provided with a second back-off safety part. The packer is provided with a back-off safety mechanism, back-off unscrewing can be carried out when a pipe column is clamped in the later period, anchoring parts are made of cast iron materials, later milling and drilling are facilitated, safety accidents of the underground pipe column are reduced, and safe inspection and replacement of the pipe column are achieved.

The invention discloses a nickel-magnesium intermediate alloy for a high-temperature alloy and a preparation method thereof.The nickel-magnesium intermediate alloy is composed of, by mass, 4%-50% of Mg and the balance Ni and inevitable impurities, and the method comprises the steps that firstly, electrolytic nickel and magnesium ingot raw materials are selected, cut and polished, and ingredients are calculated, weighed and subpackaged; 2, the raw materials are put into a crucible of an induction melting furnace to be smelted, and alloy melt is obtained; and thirdly, a steam suction filtration system is started, the alloy melt is poured into a cast iron ingot mold, and the nickel-magnesium intermediate alloy ingot is obtained after cooling. A proper amount of inert gas is introduced in the vacuum induction smelting process, smelting and pouring in a micro-negative pressure state are guaranteed, impurity introduction in the smelting and pouring processes is reduced by controlling smelting process parameters, meanwhile, gasification loss of the magnesium element is reduced, and the high-strength magnesium alloy with uniform components and high strength is obtained. The nickel-magnesium intermediate alloy is high in cleanliness and low in content of harmful gas elements and inclusions, and is suitable for the field of downstream high-temperature alloys.

The invention belongs to the technical field of brake discs, and relates to a cast iron brake disc ceramic reinforced iron-based wear-resistant coating and a preparation method thereof.The cast iron brake disc ceramic reinforced iron-based wear-resistant coating comprises a brake disc base body, an iron-based transition coating and a composite wear-resistant coating, the composite wear-resistant coating is formed by mixing iron-based alloy powder, B4C ceramic particles and CeO2 rare earth powder; the preparation method comprises the following steps: 1, carrying out laser cladding on iron-based alloy powder on a brake disc substrate to prepare an iron-based transition coating; 2, carrying out ball milling and mixing according to a weight ratio to prepare composite wear-resistant mixed powder; 3, performing laser cladding on the iron-based transition coating with composite wear-resistant mixed powder; the B4C + CeO2 ceramic particles are mixed into the iron-based alloy powder, so that microcracks of the brake disc coating are reduced, the wear resistance and hardness are improved, dust pollution is reduced, the service life is prolonged, and the friction performance better meets the brake disc strengthening requirement.

The invention provides a cooling and temperature control construction method for large-volume radiation-proof concrete, and relates to the technical field of concrete curing. Comprising the steps of manufacturing and installation of mass concrete reinforcing steel bars, laying of mass concrete cast iron circulating cooling water pipes, installation of the mass concrete wall integrated temperature control formwork, layered pouring of mass concrete, cooling water pipe circulating water cooling and plate face water storage maintenance, curing of the mass concrete wall integrated temperature control formwork and center construction of the mass concrete. Monitoring the temperature of the surface layer and the like. The device has the characteristics of reusability, energy conservation and high efficiency.

The invention discloses a casting production device of a corrosion-resistant cast iron cylinder sleeve, and relates to the technical field of cylinder sleeve casting, the casting production device comprises a bottom frame, a bottom shell is fixed on the top surface of the bottom frame, two sliding grooves are formed in the top surface of the bottom shell, the cylinders are fixed on four edges of the top surface of the bottom frame, and the top shell is fixed on the top of the outer wall of the cylinders. An electric hydraulic rod penetrates through and is fixed to the middle of the top face of the top shell, a sliding shell is fixed to the bottom face of the telescopic end of the electric hydraulic rod, the inner wall of the sliding shell is slidably connected with the outer wall of a cylinder, a round mold is arranged in the middle of the bottom face of the sliding shell, a sand mold block and a U-shaped frame are placed in the middle of the top face of the top shell, and the U-shaped frame is fixed to the bottom end in the bottom shell. The sand mold block is clamped and positioned through the two U-shaped frame plates, so that the problem that the casting effect of the corrosion-resistant cast iron cylinder sleeve is poor due to the fact that the sand mold block deviates on the table top is solved.

A grey cast iron may have within a ferrous matrix: an amount of carbon between 3.60 and 3.90% by weight; an amount of silicon between 1.40 and 1.90% by weight; an amount of titanium not higher than 0.10% by weight; an amount of boron between 0.04 and 0.07% by weight; an amount of vanadium between 0.07 and 0.14% by weight; an amount of manganese between 0.60% and 0.90% by weight; an amount of nickel not higher than 0.20% by weight; an amount of chromium not higher than 0.35% by weight; an amount of copper not higher than 0.35% by weight; an amount of phosphorus not higher than 0.10% by weight; an amount of sulphur not higher than 0.12% by weight; an amount of tin not higher than 0.10% by weight; an amount of molybdenum not higher than 0.10% by weight.

The invention provides an aluminum alloy casting iron removal system and method.The aluminum alloy casting iron removal system comprises a smelting furnace used for smelting molten aluminum, and the smelting furnace is provided with a discharging opening; the conveying belt is arranged corresponding to the discharging opening, a plurality of crystallizers are arranged on the surface of the conveying belt in the conveying direction, and the crystallizers are used for receiving the molten aluminum discharged through the discharging opening; the cooling device is arranged at the tail end, in the conveying direction, of the conveying belt, the cooling device is used for cooling the crystallizer located at the tail end, and molten aluminum in the crystallizer can be cooled by the cooling device to form cast ingots; and the cutting device is arranged at the downstream of the conveying belt and is used for cutting the iron-rich phase deposition layer in the cast ingot. By means of the technical scheme, the problem that in the prior art, iron elements are difficult to separate from molten aluminum can be solved.

The invention relates to the technical field of curtain walls, and discloses a curtain wall hyperbolic unit piece profiling jig framing method. Comprising the steps that a profiling backup plate and a profiling supporting plate are connected to form an integrated profiling base body; a pressure sensor array is arranged in the profiling supporting plate and used for detecting node stress distribution of the profiling supporting plate. A positioning U-shaped groove and a limiting steel plate are mounted on the profiling supporting plate; the structural supporting rods are vertically fixed to the surface of the standard part cast iron platform, so that a plurality of assembly supporting devices are arranged on the surface of the platform; the hyperbolic profile is embedded into the curved surface contour of the profiling backup plate of each assembly supporting device along the positioning U-shaped groove for profiling, leaning and positioning, and the clamping force corresponding to the limiting steel plate is adjusted according to the node stress distribution; and the hyperbolic profile is embedded into the curved surface contour of the profiling backup plate along the positioning U-shaped groove for profiling, leaning and positioning, the clamping force corresponding to the limiting steel plate is adjusted according to node stress distribution, framing positioning is completed, and the curtain wall hyperbolic unit piece profiling jig is obtained. The method is accurate in positioning and simple to operate.

A coke product configured to be used in foundry cupolas to melt iron and produce cast iron products is disclosed herein. In some embodiments, the coke product has a Coke Reactivity Index (CRI) of at least 30% and an ash fusion temperature (A FT) less than 1316° C. Additionally or alternatively, the coke product can comprise a fixed carbon content of at least 80% and / or a volatile matter content of no more than 1.0%.

The invention discloses a stirrup assembly type concrete beam column structure, which relates to the technical field of building structures and comprises a prefabricated lower column, a prefabricated upper column, a left superposed beam and a right superposed beam, the prefabricated lower column, the prefabricated upper column, the left superposed beam and the right superposed beam are distributed in a cross-shaped beam column structure; unique double-spiral stirrup configuration is applied to the column body, so that the torsion resistance and the bearing capacity are enhanced; the longitudinal bars and the stirrups are reasonably arranged on the superposed beam, so that the bending resistance and the shearing resistance are guaranteed. At the joint, the T-shaped channel steel plates, the fixing blocks and the hinged tension connecting rods form an energy dissipation system, and earthquake energy is effectively dissipated. The column body connection adopts the combination of a full-grouting nodular cast iron sleeve and a frame-shaped steel belt, and is matched with a post-pouring laminated layer to realize rigid connection. The limiting mechanism anchors a T-shaped channel steel plate through a double-end pull rod and a self-locking nut, a limiting clamping plate and a torsion spring form anti-pulling self-locking, the anti-seismic property of the joint is enhanced by combining a hinged tension connecting rod, and the structural reliability is improved.

The invention discloses a fluoride-salt-free and nitrate-free cast iron enamel zirconium white glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The zirconium white glaze is prepared from quartz, borax pentahydrate, magnesium carbonate, potassium carbonate, potassium feldspar, zinc oxide, aluminum hydroxide, calcium carbonate, zirconium silicate, sodium tripolyphosphate and lithium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The zirconium white glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, and meanwhile, the zirconium white glaze has good porcelain surface, luster and firing adaptability, is suitable for cast iron matrixes, has the firing temperature of 740-760 DEG C and the firing time of 87-87 hours, and can be widely applied to cast iron substrates. The method can be used for producing green and environment-friendly enamel products.

The utility model discloses a special hoisting clamp for gray cast iron profiles. The special hoisting clamp comprises a base plate, clamping mechanisms are symmetrically arranged in the base plate through adjusting assemblies, side plates are symmetrically arranged at the two ends of the base plate, hoisting assemblies are arranged on the side plates, mounting plates are arranged on the side plates through sliding assemblies, and auxiliary mechanisms are symmetrically arranged on the two sides of the mounting plates. When the side edge clamping device is used for clamping the gray cast iron profile, the side edge can be clamped and fixed through the auxiliary mechanism, so that the side edge can be better attached and clamped with the side edge of the gray cast iron profile, the side edge and the bottom can be conveniently hoisted and lifted by a hoisting device, and then the side edge and the bottom are clamped and lifted through the clamping mechanism; and when the lifting device is placed again, the lifting device is far away from the lifting device through the clamping mechanism to lose clamping and lifting, then the side edge is clamped through the auxiliary mechanism, the lifting device is matched with the lifting device to carry out placing operation, and the lifting device is convenient to use.

The invention discloses a method for manufacturing a high-wear-resistant composite swing hammer head, which comprises the following steps: washing and drying ceramic particles with an oxalic acid solution, uniformly mixing boron carbide ceramic powder and an alcohol adhesive in proportion into a slurry, and drying to remove the alcohol adhesive; then mixing the ceramic particles with NiCrBSi powder and a sodium silicate solution and filling the mixture into a honeycomb mold, taking the mixture out after microwave curing, thereby obtaining a honeycomb ceramic preform with high strength at room temperature, wherein a conical preformed hole is formed on the honeycomb ceramic preform, placing the honeycomb ceramic preform into a casting cavity of a swing hammer head metal mold, and then pouring molten high-chromium cast iron into a runner of the casting mold, wherein the high-chromium cast iron water infiltrates into gaps between ceramic preform particles under high pressure to form a reactive interface, thereby obtaining a high-wear-resistant composite swing hammer head. The method can manufacture a composite swing hammer head with a reactive interface and high wear resistance.

The present invention pertains to the fields of materials engineering and nanotechnology. More specifically, the invention discloses the use of an iron alloy comprising a mass quantity of a niobium species as a vehicle component material and a method for adjusting the mechanical properties of a metallic material comprising the incorporation of a niobium species. The products comprising use of the inventive iron alloy exhibit remarkable properties, such as improved mechanical properties combined with reduced weight, resulting in an exponential performance gain. In one embodiment, the alloy used in the invention is called Steeron, because it has steel characteristics while being a cast iron.

The utility model relates to the technical field of brake discs, and discloses a lightweight brake disc capable of improving heat dissipation, which is characterized in that a plurality of heat dissipation grooves are formed in the outer side of a fixed disc, connecting discs are mounted on the two sides of the fixed disc, a plurality of heat dissipation holes are formed in the outer sides of the connecting discs, and a plurality of ventilation grooves are formed in the opposite sides of the two connecting discs; a plurality of connecting columns are fixedly connected to the opposite sides of the two connecting discs, and a plurality of first mounting holes are formed in the fixing disc; the mounting base and the fixing disc are made of aluminum-based silicon carbide powder metallurgy materials, the requirement for light weight of the brake disc can be met, the connecting disc is made of cast iron materials, and the brake performance cannot be affected; according to the brake disc, the heat dissipation grooves communicate with the heat dissipation holes, airflow enters the heat dissipation grooves and then is guided out through the heat dissipation holes, the heat dissipation performance of the brake disc can be effectively improved, by arranging the ventilation grooves and the connecting grooves, the airflow is guided into the ventilation grooves, the temperature of the connecting disc can be increased, and the heat dissipation effect is achieved.

The invention discloses boron-containing high-chromium cast iron and an intermediate frequency furnace for machining, and relates to the technical field of intermediate frequency furnaces. A plurality of air supply holes are evenly formed in the other side of an arc-shaped air box, the air outlet end of an exhaust fan is connected to one ends of two air supply pipes, the other ends of the two air supply pipes are connected with one sides of the two arc-shaped air boxes correspondingly, and a lifting cylinder is installed on the other side of a protective cylinder; the output end of the lifting cylinder is connected with a supporting suspension frame, the top end of the supporting suspension frame is connected with a material storage barrel, and a plurality of air inlet holes are evenly formed in the two sides of the material storage barrel. Filtered waste smoke flows through the air supply pipe, enters the arc-shaped air box and then enters the material storage barrel, and the filtered high-temperature waste smoke dries metal furnace burden in the material storage barrel; heat contained in waste smoke is effectively utilized, furnace charge is added into the storage barrel in advance, the dried furnace charge in the storage barrel can be quickly fed into the smelting furnace during next feeding, the intermediate waiting time is short, and the production efficiency is high.

The invention belongs to the technical field of laser cladding, and particularly relates to a TiC-Fe-Cr coating powder material for an automobile brake disc and a preparation method and application of the TiC-Fe-Cr coating powder material. The coating powder material is prepared from 60%-80% of TiC powder, 15%-30% of Fe powder, 4%-11% of Cr powder and 0.8%-2.2% of polyethylene glycol through mixing, wet grinding, spray drying, compression molding, sintering crushing and spherical densification treatment, and the coating powder material is attached to the surface of the brake disc in a laser cladding mode. By utilizing the arrangement, the invention provides a coating powder material which solves the problem of lack of a special laser cladding material for an aluminum alloy brake disc and overcomes the technical bottlenecks that a traditional grey cast iron brake disc is heavy in weight, quick in abrasion, capable of generating dust and easy to rust and an aluminum alloy brake disc is low in hardness and poor in abrasion resistance.

The present invention relates to the field of laser beam processing technology, and may also relate to the processing of metal powders, and in particular to a method for laser cladding on the surface of a gray cast iron brake disc. The difference from the prior art is that: there is no need to perform pre-treatment work such as sandblasting, preheating, and pre-setting a base layer on the gray cast iron substrate, and the energized alloy powder is directly used through laser cladding technology to form one or more cladding layers with good metallurgical bonding on the surface of the gray cast iron brake disc. Compared with the prior art, the present invention does not require pre-treatment work such as sandblasting, preheating, and pre-setting a base layer before cladding, and is a low-energy, fast cladding method; it successfully eliminates defects such as pores and cracks that are easily generated during the cladding process; it improves the hardness, wear resistance, and corrosion resistance of the surface of the gray cast iron brake disc; and it improves the reliability and service life of the gray cast iron brake disc.

The invention provides a high-speed laser cladding metal ceramic coating, a cast iron brake disc and a preparation method and application of the cast iron brake disc. The high-speed laser cladding metal ceramic coating comprises the following preparation raw materials in percentage by mass: 40%-60% of stainless steel, 10%-20% of SiC, 10%-30% of ZrO2, 5%-10% of Ti and 1%-2% of CeO2. According to the coating, the hardness, the wear resistance, the friction coefficient and the toughness of a cast iron matrix can be remarkably improved, and the braking requirement of a motor vehicle under the extreme working condition can be well met. The invention further provides the cast iron brake disc and a preparation method and application thereof.

The utility model discloses a bearing bush structure of a ball mill, which belongs to the technical field of ball mill equipment and comprises an upper bearing bush and a lower bearing bush, the upper bearing bush comprises an upper bearing bush base shell and an upper bearing bush lining fixedly connected to the inner side of the upper bearing bush base shell, and the lower bearing bush comprises a lower bearing bush base shell and a lower bearing bush lining fixedly connected to the inner side of the lower bearing bush base shell. Solid lubricants are installed on the inner walls of the upper bearing bush lining and the lower bearing bush lining, an oil injection hole penetrating through the upper bearing bush base shell and the upper bearing bush lining is formed in the top of the upper bearing bush, cavities communicated with each other are connected to the outer walls of the upper bearing bush base shell and the lower bearing bush base shell, and positioning rings are fixedly connected to the two ends of the upper bearing bush base shell and the two ends of the lower bearing bush base shell. Through the two-layer structural design of the base shell and the lining, the base shell is made of cast iron, and the lining is made of babbitt metal, so that the cost can be saved under the condition that the structural strength is not influenced; and through the arrangement of the cavity, vibration and sound can be absorbed, and the noise reduction effect is achieved.

The invention provides a cast iron sand mold coating and a preparation method thereof, and relates to the field of casting sand mold coatings. The cast iron sand mold coating is composed of the following raw materials: a fireproof filler, a liquid carrier, a suspending agent, a binder and an auxiliary agent. The raw materials comprise, by weight, 65-70% of the fireproof filler, 19-25% of the liquid carrier, 2-4% of the suspending agent, 4.4-5.5% of the binder and 2.4-3% of the auxiliary agent; the refractory filler is composed of magnesia powder, zircon powder and graphite powder; the magnesia powder is composed of light magnesia powder and heavy magnesia powder. According to the cast iron sand mold coating and the preparation method thereof, the problems that an existing shielding type coating is thin in anti-sulfuration coating thickness, poor in anti-sulfuration coating stability, general in anti-sulfuration effect and large in gas forming amount can be effectively solved, poor spheroidization and casting defects of castings are effectively avoided, the production cost is reduced, and the stability of the castings is improved.

The iron casting waste cast iron scrap recycling and smelting device comprises a supporting bottom plate, an electric arc furnace and a supporting frame are connected to the middle of the top of the supporting bottom plate, a plurality of graphite electrodes are connected to the bottom of the supporting frame, and a second electric cylinder is connected to the position, between the electric arc furnace and the supporting frame, of the top of the supporting bottom plate; a driving motor is connected to the top telescopic power end of the second electric cylinder, a rotating disc and a fixed supporting rod are connected to the top power end of the driving motor, a cover plate matched with the electric arc furnace is connected to the end of the fixed supporting rod, and a protective inner sleeve is connected to the top of the cover plate and located on the outer side of the inserting hole; the bottom of the supporting plate is connected with a protective inner sleeve connected with the protective inner sleeve in a sleeved mode. Compared with the prior art, the device has the advantages that the electric arc furnace can be covered in a sealed mode through the cover plate capable of rotating and ascending and descending, spraying around the electric arc furnace can be prevented, meanwhile, the inner sleeve and the outer sleeve are arranged at the positions of the inserting holes, spraying cremation can be prevented, and therefore safety is greatly improved.

The utility model relates to a cast iron base with a dust removal function and a grinding and polishing workstation, and belongs to the field of mechanical equipment. The dust removal base comprises a base body and is structurally characterized by further comprising a dust removal system which is matched with the base body. A threading groove is formed in the bottom of the base main body, a dust removal groove is formed in the top of the base main body, a grating net plate is arranged above the dust removal groove, a sedimentation tank and a water storage tank are further arranged at the top of the base main body, a filter plate is arranged between the sedimentation tank and the water storage tank, the dust removal groove is located above the sedimentation tank, and the grating net plate is located above the water storage tank. A liquid level sensor is arranged in the reservoir, a first flushing slope and a second flushing slope are arranged on the two sides of the dust removal groove correspondingly, and a first flushing groove and a second flushing groove are formed above the first flushing slope and the second flushing slope correspondingly; the first flushing tank and the second flushing tank are both matched with a circulating mechanism in the dust removal system.

The present invention relates to the technical field of insulator production, and discloses a forming mold for an insulator, which includes an upper mold and a lower mold. An upper injection cavity is formed on the bottom surface of the upper mold, and a lower injection cavity is formed on the top surface of the lower mold. The insulator is correspondingly engaged with the lower injection cavity. Exhaust holes are formed at both front and rear ends of the lower injection cavity. A frame-shaped air groove is formed on the top surface of the lower mold. The exhaust holes are connected to the air groove. Annular grooves are formed on both front and rear sides of the lower injection cavity. An annular ring is engaged in the annular groove. A clamping block is provided at the top end of the annular ring. Clamping grooves are formed at the front and rear of the upper injection cavity, and the positions of the clamping grooves correspond to the positions of the clamping blocks. The inner wall of the annular ring is fitted to the cast iron parts before and after the insulator. The present invention is beneficial to avoiding the influence of gas in the mold cavity on the material flow, and at the same time avoiding the difficulty in mold opening caused by the formation of negative pressure during the reciprocating production process, and is beneficial to cooperating with external devices to pick up the insulator.

The invention discloses a casting structure and method for improving box opening efficiency and an obtained casting, and belongs to the field of cast iron metallurgy, the casting structure comprises a sand core area, a casting area and the casting area, at least one hoisting hole is formed in the casting area, a hoisting through part is fixedly installed at the hoisting hole, the hoisting through part is of a through structure, and the left side and the right side of the hoisting through part are communicated with the outside; and the hoisting middle through part is filled with sand. According to the invention, sand removal is guided in the through part of the through type hoisting, comprehensive sand removal does not need to be carried out on an inner cavity of a large casting, the sand removal workload is obviously reduced, the labor intensity of casting box opening can be obviously reduced, and the production efficiency is improved.

The utility model discloses a cast iron pan blank positioning perforating machine, which relates to the technical field of pan blank processing, and comprises an equipment platform, support legs are fixedly connected at four corners of the bottom surface of the equipment platform, a perforating mechanism is arranged on the upper side of the equipment platform, the perforating mechanism comprises a cross rod, and inclined rods are fixedly connected at two ends of the cross rod. The bottom ends of the inclined bars are fixedly connected to the two sides of the equipment platform, the inclined bar on one side is slidably connected with a sliding sleeve, a U-shaped rod is arranged on the lower side of the sliding sleeve, the sliding sleeves are hinged to the two ends of the U-shaped rod, and one end of the U-shaped rod is fixedly connected with a fan-shaped worm wheel. The device has the beneficial effects that the punching assembly is hinged to the sliding sleeve through the U-shaped rod, the fan-shaped worm wheel is arranged on the U-shaped rod, the angle of the U-shaped rod is adjusted through the fan-shaped worm wheel under the control of the worm, meanwhile, the self-locking function is achieved, adjustment of the punching angle can be achieved, the punching angle can be perpendicular to the tangent plane of the position of a through hole in the arc face of a pot blank, and the punching efficiency is improved. And moreover, the angle is more stable after being adjusted, and slipping and deviation during drilling and tapping are prevented.

The present invention relates to the technical field of cutting fluid recovery and treatment, and discloses a workstation for multi-stage treatment of cutting fluid, the device comprising a secondary liquid tank, a separator, a chip collection vehicle, a primary liquid tank and a cleaning box fixedly installed in the middle of the top of the secondary liquid tank, a separation box fixedly installed on one side of the cleaning box, and further comprising: a tertiary liquid tank fixedly installed on the top of the cleaning box, a conveying assembly provided on one side of the separator, a cleaning assembly provided inside the separation box, and a filter press assembly provided on the top of the tertiary liquid tank; the conveying assembly comprises a mounting groove and a conveying chain plate fixedly installed inside the mounting groove, and a mounting plate is symmetrically fixedly connected to the top of the mounting groove, which solves the problem that after the cutting fluid brings chips into the water tank, cast iron and powdery chips are deposited in various corners of the water tank, and fine needle-shaped and flaky chips float on the liquid surface, affecting the normal operation of the water tank.