53results about How to "Good chilling effect" patented technology

The invention discloses a lost wax shell-based negative pressure dry sand and iron shot chilling vibrational composite casting process method. The method is characterized by comprising the following steps of: feeding a shell manufactured by a lost wax process into a chilling sand box; loading steel shots in the gap between the shell and the chilling sand box; feeding the chilling sand box into a sand box with a vacuumized negative pressure model; fully filling dry sand between the chilling sand box and the sand box with the vacuumized negative pressure model; paving a plastic film; placing a pouring cup; and pouring under the simultaneous vacuumizing and vibrating condition. By the method, the strength of molding sand is high, a chilling effect is good, the process characteristics of lost foam casting and hot investment casting are combined, the defect of foam-gasified carbon special for the lost foam casting is overcome, the chilling effect of the iron shots is fully exerted, the pouring is performed under the vibration condition, and alloy grains are refined, so that wear-resisting castings have higher density, hardness and wear resistance.

The invention discloses a high-temperature wear-resisting coating for casting and a preparation method thereof. The coating comprises the following components: a fireproof material, a carrier, a bonding agent, a suspension agent and an auxiliary agent. The invention further designs the preparation method of the high-temperature wear-resisting coating for casting. The preparation method comprises the following steps: putting the suspension agent and the carrier into a dispersion machine and uniformly agitating; then adding the fireproof material and continually agitating; and slowly adding the bonding agent and the auxiliary agent in sequence under an agitating state; and agitating uniformly to obtain the high-temperature wear-resisting coating for casting. The high-temperature wear-resisting coating for casting is low in price, and is clean and is free from pollution; the preparation method is simple and the coating is high temperature resistant and wear resistant and is not easy to release; and a die for casting can be protected and the quality of a casting piece can be improved.

The invention relates to the technical field of semi-solid slurrying, in particular to a semi-solid slurrying device and a composite board manufacturing device using the semi-solid slurrying device. The semi-solid slurrying device comprises a runner communicated with a liquid storage tank, obliquely arranged from top to bottom and used for molten metal to flow through, wherein the runner is provided with the contact surface in contact with the molten metal, strip-shaped protrusions parallelly distributed from top to bottom are arranged on the contact surface, grooves are formed among adjacent strip-shaped protrusions, the length directions of the strip-shaped protrusions are perpendicular to the flowing direction of the molten metal. By adopting the semi-solid slurrying device, the kish problem of the contact surface of the runner is greatly solved, high-quality semi-solid slurry produced by the semi-solid slurrying device can form metallurgical bonding with a solid heterogeneous material, and further the technical problem that interface metallurgical bonding is difficult to achieve by adopting a traditional composite board manufacturing process is further effectively overcome.

The invention relates to a vein-proof additive for casting and a preparing method thereof. The vein-proof additive comprises 5-15% of special mold sand, 8-25% of silicate particles, 30-55% of lithiumcontaining mineral particles, 8-20% of titanium containing mineral particles and 8-20% of iron oxide powder, wherein the special mold sand comprises at least one of zircon sand, chromite sand, olivinesand and ceramsite; the silicate particles are of a layered structure and comprise at least one of shale, pyrophyllite and mica; the lithium containing mineral particles comprise at least one of spodumene, amblygonite and petalite; the titanium containing mineral particles comprise at least one of ilmenite, rutile, anatase titanium dioxide, brookite and leucoxene; and the iron oxide powder comprises iron oxide black and iron oxide red. On account of the common vein casting flaws of resin sand castings, the invention provides the vein-proof additive product which has a remarkable vein-proof effect, is low in cost and does not affect the strength of sand cores.

The invention discloses a gravity casting technique for a crane wheel by hanging sand linings on graphite molds. The gravity casting technique comprises the specific steps that the upper box graphitemold provided with an upper box top plate, an upper box pouring jacket and an upper bolt, and a lower box graphite mold provided with fixed square steel, a lower box pouring jacket and a lower bolt are prepared; after baking is conducted to the set temperature, the sodium silicate-bonded sand upper box sand lining and the sodium silicate-bonded sand lower box sand lining are made in a shot mode through a sand shooter, and the set flow of CO2 is blown in for hardening demolding; the upper box sand lining and the lower box sand lining are reserved on the upper box graphite mold and the lower boxgraphite mold through sand hanging grooves correspondingly, a rim graphite core is placed at the rim part of the lower box graphite mold, a technical hole sand core and a central core which are madeof resin sand are placed at the lower box sand lining, and a rain core and a floating core which are made of resin sand are placed at the upper box sand lining; and after box closing, the wheel is poured through a bottom pouring ladle. The problems that in a traditional crane wheel casting production technique, the surface quality of a wheel is poor, the dimensional precision is low, internal quality uniformity is poor, and large-batch efficient production is quite difficult to achieve are solved.

The invention discloses a mixed cooling low-pressure wheel hub mold. The mixed cooling low-pressure wheel hub mold comprises an upper mold body, a lower mold body and side mold bodies, and the upper mold body, the lower mold body and the two side mold bodies can jointly form a casting mold for casting a wheel hub in an enclosing mode; a wheel rim water cooling mechanism is arranged in each side mold body, each wheel rim water cooling mechanism comprises a flow dividing pipe, an upper flow guiding pipe and a lower flow guiding pipe, and the upper flow guiding pipes and the lower flow guiding pipes communicate with the flow dividing pipes through three-way pipes; and a wheel spoke air cooling mechanism, a wheel spoke water cooling mechanism and a diaphragm medium are arranged in the lower mold body. According to the mixed cooling low-pressure wheel hub mold, the wheel hub mold is cooled by adopting a water cooling and air cooling mixed mode, the cooling speed is high, and the achieved chilling effect is better; and pipe arranging structures in the lower mold body and the side mold bodies are overall planned according to the thickness of all parts of the wheel hub, therefore, the cooling speed of all the parts of the wheel hub is more similar, the wheel hub can be overall molded, and the phenomena that the junctions of wheel spokes and a wheel rim have large shrinkage holes and wheel rim shrinkage defects due to the fact that shrinkage compensation is insufficient are avoided.

The invention relates to precoated sand with a sand adhesion prevention characteristic and used for high manganese steel and a preparation method and application thereof. The precoated sand with the sand adhesion prevention characteristic and used for the high manganese steel comprises base aggregate, first reinforcement aggregate, second reinforcement aggregate, binder, a curing agent and lubricant. The base aggregate is silica sand. The first reinforcement aggregate comprises ferroferric oxide or/and chromite sand. The second reinforcement aggregate is magnesia. The precoated sand has good high temperature resistant strength and chilling performance, a sand core does not need to be coated with paint, and in this way, the precoated sand has a sand adhesion prevention function when used for a high manganese steel casting. The casting cast in the sand core prepared by the preparation method does not need polishing after casting, unstable factors in the production process are reduced greatly, the yield of castings is increased greatly, cost of a casting enterprise can be lowered, production efficiency of the casting enterprise can be improved, and the precoated sand can be used in the foundry industry on a large scale.

The invention discloses a 3D printing graphite contoured chill and a preparation method thereof, and relates to 3D printing forming methods. The 3D printing graphite contoured chill and the preparation method thereof are characterized in that inorganic modified water glass is treated as an adhering agent; an organic ester curing agent is treated as a hardening agent; graphite powder is treated asa printing forming material; a three-dimensional design contoured chill model document is input a 3D printer; a powder bed based three-dimensional jet printing (3DP) technology is carried out to printa three-dimensional entity in a multi-layer overlapping manner so as to obtain a primary graphite contoured chill blank; the primary graphite contoured chill blank is fully cured and roasted to obtain the 3D printing graphite contoured chill product. The formation technology is simple; industrial production is easily carried out; the market prospect is wide; the problems of cumbersome manufacturing process of the contoured chill in casting, difficult numerical control processing and short production period can be solved; in addition, the graphite chill chilling effect is good, so that a castcan be prevented from chill adhering and air pore defects; the production cost is decreased; the cast yield and the production efficiency can be improved; in addition, an organic adhering agent is applied to the 3D printing technology, the performance is stable, the energy is saved, the environment is protected, and the production cost is low.

Beverage bottling or container filling plant having a beverage bottle or container labeling machine, and a beverage bottle or container labeling machine having a vacuum drum. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

The invention discloses an internal chill process for improving shrinkage porosity of a vermicular iron cylinder head. The internal chill process comprises the following steps that the internal chillis used for chilling from the inside of a casting hot spot when the vermicular iron cylinder head is produced, wherein the internal chill needs to be placed in a cavity and kept fixed during casting,and the internal chill and molten iron can be fused into a whole during pouring; the internal chill is fused with the casting and is removed during machining; the internal chill is placed in a bolt hole part and inserted into a sand core base to be fixed; the internal chill is placed in a fuel injector hole, is wrapped in a sand core during sand shooting, and is fused with the molten iron into a whole during pouring; and the internal chill is made of low-carbon steel. According to the internal chill process, the internal chill made of the low-carbon steel is fixed to the center of the hot spotpart in a certain modes, chilling is directly conducted from the center part where shrinkage porosity is likely to occur, the action effect is high, and the chilling effect is good; compared with chillers currently used in the industry, the internal chill is smaller in size, lighter in weight and more convenient to use in the production process and transport in a logistics mode.

The invention discloses a novel chilling block for casting. The chilling block is provided with a bottom surface, a top surface and side surfaces, wherein the bottom surface is used for being in contact (including direct contact and indirect contact) with the surface of a casting, the bottom surface and the top surface are connected (including direct connection and indirect connection) through the side surfaces, and the cross section area of the chilling block is gradually reduced from the bottom surface to the top surface. The novel chilling block is simple and ingenious in structure and easy to machine, the corresponding technical effect can be effectively achieved, the chilling effect at the edge junction is gently transited, and the situation that the casting cracks at the edge of the chilling block is effectively avoided. Besides, due to a polygon structure, the heat dissipation area is enlarged, the conduction of heat energy is improved, the chilling effect of the chilling block is improved, the product quality of the casting is ensured, and the quality of the casting is improved.

The invention discloses a lost foam-graphite chilling-antigravity casting process for railway cast-steel wheels. The lost foam-graphite chilling-antigravity casting process integrates lost foam casting technology, graphite chilling casting technology and antigravity casting technology into one. According to the process, a graphite ring ready to mold is fixed in a lost foam casting sandbox via bolts; prepared and molded riser foam and wheel foam patterns are bonded with an assembly of an ingate, a casting pipe, a stopper plug and a stopper rod and are then put in the graphite ring; the lost foam casting sandbox is filled with dry sand and is then connected with a negative pressure device after vibration compaction; the sandbox is put on the top of the cover of a prepared pressure tank; a riser tube arranged on the cover of the pressure tank is communicated with the casting pipe; a steel ladle is arranged in the pressure tank; the riser tube is inserted into the steel ladle; air or inertgas is pressed in the pressure tank; and wheel casting is carried out. The lost foam-graphite chilling-antigravity casting process provided by the invention overcomes the problems of the low recoveryand utilization rate of sodium silicate sand in conventional production processes for railway cast-steel wheels, influence of high waste-sand discharge on surrounding ecological environment and secondary oxidation of molten steel caused by casting of bottom-pouring ladles.

The invention discloses a graphite mold for casting. The graphite mold for casting comprises a mold body, first sand boxes, second sand boxes and a mold sleeve; the mold body, the first sand boxes, the second sand boxes are positioned in the mold sleeve; a cavity is formed in the mold body, and an exhaust hole is formed in the top end of the mold cavity; the first sand boxes are positioned on theside part of the mold cavity, the first sand boxes are provided with a branch runner and a main runner, and an opening of the main runner is positioned at the top end of the first sand boxes; and oneend of the branch runner is connected with the middle part of the cavity, the other end of the branch runner is in communication with the main runner, and the second sand boxes are positioned at the lower part of the cavity. The graphite mold can be repeatedly used, the heat conductivity of graphite can be utilized, so that castings 5 can be quickly cooled.