1020 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 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.

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 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 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 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 invention discloses a centering rotary feeding device, belongs to the technical application field of numerical control inverted lathes, and is used for solving the feeding problem of a large inverted lathe. The device comprises a rotary feeding device and a workpiece centering device, the rotary feeding device is based on a rotary base, longitudinal movement of a sliding seat is achieved through a linear rail and a driving system, a feeding table is driven to rotate by 360 degrees in cooperation with a rotary bearing with a gear ring, and the feeding table is provided with a self-adaptive material table; the workpiece centering device is based on the centering base, the left centering arm and the right centering arm are driven by the bidirectional driving system to move synchronously, and quenching pads on the inner sides of the centering arms are arranged in a V shape to achieve automatic centering of workpieces. The device is made of cast iron materials, so that the rigidity is improved, the maximum bearing capacity is 3200 Kg, the feeding stroke is not smaller than 2500 mm, self-adaptive clamping and precise centering of workpieces can be achieved, the machining auxiliary time is saved, support is provided for development of large inverted lathes, and the device can also be used for other equipment needing feeding and discharging of heavy workpieces.

A brake disc for a disc brake may have a braking band made of gray cast iron or steel, provided with two opposite braking surfaces, each of which defines at least partially one of the two main faces of the disc. The disc is provided with a base layer constituted by steel having a nickel content of at most 15% which covers at least one of the two braking surfaces of the braking band.

The invention provides a low-carbon environment-friendly rust-proof treated cast iron machine body blank and a rust-proof process thereof, and relates to the technical field of rust-proof treatment. The thickness of an oxidation film in the cast iron machine body blank subjected to low-carbon environment-friendly rust-proof treatment is 5-25 microns, the porosity of the oxidation film is not higher than 15%, and the binding force of the oxidation film is not lower than 5 Mpa. According to the low-carbon environment-friendly cast iron body blank obtained through the rust prevention process, a compact oxidation layer is generated on the surface and the inner hole wall of the cast iron piece, and then the corrosion resistance of the cast iron piece is improved. And moreover, the problem that the engine body is rusted during circulation processing in a factory can be solved without spraying paint on the outer surface of the engine body, so that the energy consumption is greatly reduced, the low-carbon and environment-friendly effects are realized, the production efficiency is improved, and the manufacturing cost is reduced.

The invention relates to the technical field of cast iron alloys, in particular to a preparation method of high-carbon-equivalent gray cast iron, which comprises the following steps: taking scrap steel as a main material, taking scrap castings, silicon carbide and a carburant as auxiliary materials, and smelting according to a determined raw material ratio and a determined carbon equivalent value range; sampling smelted molten iron to obtain a first cooling curve of the molten iron, extracting characteristic points, performing thermal analysis to determine the metallurgical state of the molten iron, and adjusting the content of pre-inoculated silicon carbide or analyzing the possibility of over-inoculation; pre-inoculation is conducted on the smelted molten iron, the smelted molten iron is secondarily sampled to obtain a second cooling curve of the molten iron, feature points are extracted, the pearlite form is determined, and the sensitivity index of the smelted molten iron to inoculation is calculated according to the change condition of the feature points of the first cooling curve and the second cooling curve. Through pre-inoculation adjustment and tapping inoculation and pouring inoculation, the problems that graphite is thick and large and the performance is reduced easily due to high carbon equivalent are solved.

The invention relates to gray cast iron and a smelting method thereof, in particular to high-strength gray cast iron and a smelting method thereof. According to the high-strength gray cast iron and the smelting method thereof, the defect that in the prior art, alloying is adopted for improving the strength of the gray cast iron, and consequently the texture of the gray cast iron is poor is overcome, the tensile strength of an attached casting test bar of the high-strength gray cast iron is larger than 300 MPa, and the hardness is larger than 190 HB; the metallographic structure of the high-strength gray cast iron in an as-cast state can achieve more than 98% of pearlite, less than 1% of cementite and more than 90% of A-type graphite, and the strength and the metallographic structure of the alloyed gray cast iron are effectively improved.

The invention discloses a cast iron cylinder sleeve structure and alloy component optimization method based on friction and wear performance prediction, and belongs to the technical field of material science and machine manufacturing. The problems that a traditional cylinder sleeve alloy design method is low in efficiency and the material performance of the designed cylinder sleeve alloy is limited are solved. The method comprises the following steps: collecting an existing large-cylinder-diameter engine sample, and carrying out metallographic characterization and microhardness test on an engine cylinder sleeve to obtain cylinder sleeve structure characteristics and alloy component data; the wear volumes of different parts are obtained through a friction wear experiment, and then the wear rate is calculated based on the wear volumes. After tissue characteristic data, alloy component data and frictional wear test data of the cylinder sleeve are collected, the data are imported into different machine learning models, the models learn the corresponding relation between the tissue characteristic data and the frictional wear performance of the existing cylinder sleeve, and optimization of material tissue and alloy components is guided according to the prediction result of the optimal model. The method can be applied to optimization of cylinder sleeve structures and alloy components.

The invention relates to the technical field of casting molding, and discloses a casting molding device for producing a high-chromium cast iron wear-resistant material, which comprises a machine body, a feeding hopper is arranged at the top of the machine body, an air cylinder is arranged on the outer wall of the machine body, a blanking cabin is arranged at the bottom of the machine body, and a discharge hole is formed in the outer wall of the machine body. A right mold is arranged on the inner wall of the machine body, a left mold is arranged at the output end of the air cylinder, a pop-up mechanism is arranged in the right mold, the feeding hopper comprises a first screw rod, a device block, a limiting rod, a funnel, an exhaust pipe, a fixing rod and a runner, and the first screw rod is rotationally connected to the outer wall of the machine body. And at the moment, the vibration rod resets to drive the elastic column to knock the inner wall of the left mold, so that the left mold vibrates to enable the materials to fall into a blanking bin below, the labor cost generated during manual material taking is avoided, and the production efficiency is improved.

The invention discloses a dynamic balance detection and processing device for a cast iron flywheel, and relates to the technical field of flywheel detection, and the device comprises a dynamic balancing machine which automatically detects the unbalance amount of a flywheel assembly; the machining mechanism is arranged above the detection table and comprises an electric push rod, a motor and a drill bit, the motor drives the drill bit to rotate and automatically removes the unbalance amount, and the electric push rod drives the motor and the drill bit to ascend and descend and automatically adjusts the amount value of the removed unbalance amount; the protection mechanism is arranged at the edge of the detection table and comprises three protection plates I and protection plates II, the three protection plates I are respectively fixed on the rear side, the left side and the right side of the detection table, and the pair of protection plates II is movably connected to the front side of the detection table. The dynamic balance detection and processing equipment can automatically complete flywheel dynamic balance detection and synchronously perform automatic de-weight processing, and is provided with a perfect protection structure at the same time.

The utility model belongs to the field of pouring cups, and particularly relates to a groove-shaped pouring cup capable of automatically stopping slag, which comprises a steel groove body, a fire-resistant lining and lifting lugs, the two ends outside the steel groove body are respectively provided with one lifting lug, the bottom of the steel groove body is provided with a water outlet, a slag separating plate is arranged in the steel groove body, and the slag separating plate is inserted into an open groove of the fire-resistant lining. The distance h between the bottom edge of the slag partition plate and the bottom of the refractory lining is 30-60mm; one side of the slag partition plate is a steel inlet area, and the other side of the slag partition plate is a steel outlet area; the water outlet is located in the fire-resistant step, the upper edge of the fire-resistant step is flush with the lower edge of the slag partition plate, and the distance between the fire-resistant step and the slag partition plate is 60-80 mm. The utility model has the beneficial effects that a turning runner of molten iron from the slag partition plate to the water outlet is beneficial to floating of iron slag, an automatic slag blocking function can be realized, more than 99% of floating slag is blocked, the slag inclusion defect of iron castings is obviously reduced, and the qualification rate of finished products reaches 100%.

A method for induction quenching and leaving a soft zone for ultra-long machine tool guide rails is described. This method is suitable for machine tool guide rails that are prone to cracking at the initial end after quenching or require machining (such as milling or drilling). The method belongs to the field of heat treatment technology. The method includes the following steps: aging, machining, stress relief, medium-frequency induction quenching, and tempering the ultra-long guide rails. The medium-frequency induction quenching utilizes two inductors: one preheating inductor and one quenching inductor. The two inductors are spaced 15-20 mm apart, and the distance between the inductor surface and the quenching surface is 4-6 mm. Heating and quenching begin at a point more than 20 mm from the edge of the machine tool guide rail at the initial end of the quenching process. After this quenching process, the hardness of the quenched area of ​​the guide rail reaches 55-60 HRC, the layer depth reaches 5.0-7.6 mm, and the soft zone length is 20-25 mm. The soft zone still retains the original hardness of the cast iron.

The invention provides a wear-resistant high-toughness high-chromium cast iron material and a preparation method thereof, and belongs to the technical field of wear-resistant metal material preparation. The high-chromium cast iron material comprises the following chemical components in percentage by mass: 2.80%-3.20% of C, 0.60%-0.85% of Si, 1.60%-2.50% of Mn, 21.00%-23.00% of Cr, 0.30%-0.50% of Mo, 0.30%-0.60% of Ni, 0.20%-0.45% of W, less than 0.08% of both P and S, and the balance of iron and inevitable impurities. The preparation method comprises the following steps: smelting raw materials, pouring, carrying out heat treatment on a green body, carrying out first cooling, and sequentially carrying out thermal refining and second cooling. By adjusting the chemical components and the preparation method of the high-chromium cast iron and heating twice (including heat treatment and thermal refining), high wear resistance and high toughness are kept to the maximum extent.

The invention relates to the technical field of ferrous metal casting, in particular to a gray cast iron preparation optimization method based on silicon-carbon coordinated regulation, which comprises the following steps: calculating a wall thickness sensitivity coefficient of a casting based on a target size of the casting so as to determine an actual silicon-carbon ratio of the casting; the method comprises the following steps: adding a synthetic cast iron raw material into an electric furnace for melting, adjusting the components to the actual silicon-carbon ratio to obtain molten iron, raising the temperature of the molten iron to 1500-1550 DEG C, standing for 3-5 minutes, determining inoculation parameter adjustment data according to the maximum temperature deviation and the actual silicon-carbon ratio in the standing process, pouring the molten iron into a preheated molten iron treatment ladle, and carrying out heat preservation for 3-5 minutes. Adding a silicon carbide inoculant before molten iron is discharged from the furnace; the silicon-barium inoculant is added for the first time after the molten iron is discharged into a molten iron treatment ladle; and the molten iron is poured into a pouring ladle for pouring forming, the silicon-barium nucleating agent is added for the second time along with flow when the molten iron is poured into a sand mold, and the gray cast iron is obtained after forming. The mechanical property and hardness uniformity of the gray cast iron are improved.

This invention relates to the field of casting molding technology and discloses a casting molding device for producing high-chromium cast iron wear-resistant materials. The device includes a machine body, a feeding hopper at the top of the machine body, a cylinder on the outer wall of the machine body, a dropping chamber at the bottom of the machine body, a discharge port on the outer wall of the machine body, a right mold on the inner wall of the machine body, a left mold at the output end of the cylinder, and a pop-out mechanism inside the right mold. The feeding hopper includes a screw, a device block, a limiting rod, a funnel, an exhaust pipe, a fixing rod, and a flow channel. The screw is rotatably connected to the outer wall of the machine body. As the left mold contracts, the material moves towards the cylinder. At this time, the vibrating rod resets, causing the elastic column to strike the inner wall of the left mold, causing it to vibrate and fall into the dropping chamber below. This avoids the labor costs incurred during manual material handling, thereby improving production efficiency.

The silver ingot casting mold comprises a cast iron body, a first graphite plate and a second graphite plate, the cast iron body is of a groove-shaped structure with an opening in the top, the cast iron body is provided with a first inner wall and a second inner wall, the first inner wall and the second inner wall are oppositely arranged, the first inner wall is provided with a first vertical guide groove, and the second inner wall is provided with a second vertical guide groove. The first inner wall is provided with a first vertical guide groove, the second inner wall is provided with a second vertical guide groove, the first graphite plate is arranged in the first vertical guide groove in a vertically sliding mode, the second graphite plate is arranged in the second vertical guide groove in a vertically sliding mode, and a first embossment pattern is arranged on the face, facing the second graphite plate, of the first graphite plate. A second embossment pattern is arranged on the face, facing the first graphite plate, of the second graphite plate, and a cooling channel is formed in the cast iron body. The technical scheme is used for solving the problem that embossment pattern design is difficult to achieve in an existing integrated silver ingot casting mold.

The application relates to the technical field of cutting equipment, and particularly discloses a positioning cutting device for grey cast iron production, which comprises a main body structure, a locking unit, a cutting unit and a distance adjusting structure. The locking unit is fixedly arranged on the main body structure, the cutting unit is movably arranged on the main body structure, and the distance adjusting structure is fixedly arranged on the main body structure. The first motor in the main body structure drives the first gear to mesh with the first gear seat, so that the distance between the clamping frames can be flexibly adjusted, and the grey cast iron workpieces and the workbench surface with different width specifications can be accurately matched. The modular series connection design of the third gear seat in the distance adjusting structure further expands the cutting range and adjusts the boundary. Meanwhile, the device has two modes of handheld construction and bench surface fixation, and can meet the multiple requirements of regular workpiece batch cutting, irregular workpiece special-shaped cutting and special position fixed-point cutting.

The utility model discloses a cast iron generator end cover with a shockproof function, which comprises a flange, and a plurality of fixing holes are arranged in the flange. The cover body is arranged at one end of the flange; the damping mechanism comprises a containing groove formed in the other end of the flange, a rubber pad, a first limiting piece and a second limiting piece, one end of the rubber pad is embedded into the containing groove, the other end of the rubber pad extends out of the containing groove, the first limiting piece and the second limiting piece are installed on the inner side face of the containing groove, and when the rubber pad is embedded into the containing groove, the rubber pad is connected between the first limiting piece and the second limiting piece in an abutting mode; the second limiting piece is of a cuboid structure, and the first limiting piece is of a trapezoidal structure. The beneficial effects of the utility model are that through the designed damping mechanism, the rapid addition of the rubber pad is realized, and the rubber pad is added between the contact surfaces of the end cover and other parts of the generator, so that the vibration energy can be absorbed and dispersed, the received vibration impact can be reduced, the shockproof performance can be improved, and the service life of the generator can be prolonged.

The application relates to the field of wear-resistant materials, and discloses a high-chromium cast iron material with high wear resistance and a heat treatment process of the high-chromium cast iron material. The heat treatment process steps are as follows: taking iron-coated zirconia toughened alumina ceramic as a reinforcing phase material; placing a casting in a heat treatment furnace, grading cooling to room temperature after heating in the furnace; then performing three-stage tempering to obtain a processed piece; performing surface cleaning and preheating on the cut processed piece to obtain a pretreated processed piece; uniformly mixing titanium-plated cubic boron nitride powder, graphite, nickel-based alloy powder and a binder, and prepositioning the mixture on the surface of the pretreated processed piece, and preparing a cladding layer by using laser cladding to obtain the high-chromium cast iron material with high wear resistance. The application takes the iron-coated zirconia toughened alumina ceramic as the reinforcing phase material, and prepares the cladding layer by using the titanium-plated cubic boron nitride powder, the graphite and the nickel-based alloy powder, and adopts the grading cooling and three-stage tempering mode to prepare the high-chromium cast iron material with high hardness, high impact toughness and high wear resistance.

This utility model relates to the field of cast iron pot mold technology and discloses a multi-temperature zone circulating preheating heating device for cast iron pot molds. It includes a base, with support columns symmetrically fixedly connected to the top of the base in all directions. A fixed seat is fixedly connected to the top of each of the four support columns. A pressing and heating mechanism is provided on the top of the base. Multi-temperature zone differentiated heating is achieved through a combination of an electromagnetic induction coil and an infrared radiation heating tube. The electromagnetic induction coil is arranged between the bottom of the lower mold base and the inner mold, using the principle of electromagnetic induction to rapidly heat the bottom of the mold, suitable for efficient heating of thick-walled parts of the cast iron pot mold. The infrared radiation heating tube is located between the lower mold base and the inner mold, above the heat insulation ring, and can uniformly radiate heat to the sidewalls of the mold. The combined effect of these two methods significantly shortens the preheating time compared to traditional single heating methods, while simultaneously meeting the temperature requirements of different parts of the mold, effectively improving production efficiency.

The utility model discloses a device for transporting chilled cast iron plungers, which comprises a base, a placing groove is arranged on the base, a backing plate is arranged on the placing groove, two springs are respectively arranged at two ends of the inner wall of the placing groove, opposite ends of the two springs are jointly connected with an arc-shaped clamping plate, an adsorption groove is arranged on the base, and the adsorption groove is connected with the backing plate. A magnetic block is arranged in the adsorption groove, a protective cover is installed on the magnetic block, and a handle is arranged at the upper end of the protective cover. The utility model has the advantages that the cushion plate and the arc-shaped clamping plate driven by the spring are arranged in the placing groove, so that the chilled cast iron plunger can be effectively fixed, and the chilled cast iron plunger is prevented from sliding or shaking in the transportation process, thereby reducing the risk of damage caused by sliding or collision. The magnetic block arranged on the base and the protective cover arranged on the magnetic block not only provide extra stability, but also further protect the plunger from being affected by external environments such as dust and small particles through the protective cover, and meanwhile prevent direct physical collision.

The application discloses a COG binding machine with buffer material online recovery and cast iron framework, and relates to the field of liquid crystal module assembly equipment.The device comprises a rack, a feeding unit, an ACF attaching unit, a pre-pressing unit, a main pressing unit, a discharging unit and a mechanical hand carrying system.The support frame of the main pressing unit is integrally cast from cast iron material and is internally provided with a reinforcing rib structure;the buffer material supply and recovery mechanism with the front release and rear collection structure comprising a floating roller and a tension sensor is arranged below the main pressing platform, so that the flexible buffer material is automatically supplied online, the tension is adjusted in real time and the waste material is recovered;the mechanical hand carrying system adopts a linear motor to drive the X shaft and four groups of independent mechanical hand modules, cooperates with a position detection sensor array and a multi-axis cooperative control module to realize multi-process parallel operation and anti-interference.The application effectively solves the problems of the existing device, such as frequent replacement of the buffer material, influence of thermal deformation on precision and interference of multiple mechanical hands, significantly improves the binding yield and production rhythm, and is suitable for efficient mass production of LCD screens.

The invention relates to a method for purifying molten iron in a furnace based on a decomposable foaming sand core, and belongs to the technical field of foundry metallurgy. According to the method, an alkaline phenolic resin sand core internally provided with sodium bicarbonate is adopted, and the alkaline phenolic resin sand core extends into the position, 100-200 mm away from the bottom, in the furnace through a special clamp in the molten iron standing stage. Sodium bicarbonate in the sand core is slowly decomposed at high temperature to release a large number of microbubbles, and non-metallic inclusions in molten iron are effectively captured and brought out in the floating process. Deep and uniform purification of the molten iron is achieved through a slow-release foaming mechanism, the purity of the molten iron and the casting quality are remarkably improved, and the method has the advantages of being easy and convenient to operate, low in cost and free of additional equipment and is particularly suitable for the production process of cast iron smelting in an intermediate frequency furnace.

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

A cast iron or an iron chromium alloy interconnect for an electrochemical stack includes an air side and an opposing fuel side, a fuel flow field located on the fuel side and including fuel channels separated by fuel ribs, and an air flow field located on the air side including air channels separated by air ribs.

The invention belongs to the field of metal material modification and roller manufacturing, and particularly relates to a production method of a double-element alloying modified carbide high-chromium cast iron roller for rod and wire rolling. Paving ferrotitanium at the bottom of a ladle, smelting molten iron on the outer layer of the roller by adopting an intermediate frequency furnace, and discharging when the components reach the standard and the temperature of the molten iron reaches 1460 + / -20 DEG C; after the molten iron subjected to titanium alloying treatment is subjected to slagging-off treatment at a tapping station, Ce particles are packaged in a hollow iron sheet pipe, the hollow iron sheet pipe is inserted into the molten iron after the two ends of the hollow iron sheet pipe are closed, and mechanical stirring is conducted for 1-3 minutes; and when the temperature of the molten iron subjected to Ti and Ce double alloying is reduced to 1440-1450 DEG C, the molten iron is poured into a rotating mold at a constant speed for centrifugal pouring. The size and distribution of carbides are modified mainly through double-element alloying, the abrasion resistance of the slitting roller is improved, the protection effect of a matrix on the carbides is enhanced, the toughness of a slitting blade is improved, the tipping occurrence rate is reduced, and therefore the rolling efficiency is improved.