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203 results about "Deep drawing" patented technology

Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. It is thus a shape transformation process with material retention. The process is considered "deep" drawing when the depth of the drawn part exceeds its diameter. This is achieved by redrawing the part through a series of dies. The flange region (sheet metal in the die shoulder area) experiences a radial drawing stress and a tangential compressive stress due to the material retention property. These compressive stresses (hoop stresses) result in flange wrinkles (wrinkles of the first order). Wrinkles can be prevented by using a blank holder, the function of which is to facilitate controlled material flow into the die radius.

Alloyed hot-dip galvanized steel sheet and method for producing alloyed hot-dip galvanized steel sheet

Disclosed is an alloyed hot-dip galvanized steel sheet in which a substrate of the alloyed hot-dip galvanized steel sheet contains 0-1.0% by mass of Si, the average Fe content in an alloyed hot-dip galvanized layer of the alloyed hot-dip galvanized steel sheet is 10-12% by mass, and the surface phase structural composition of the alloyed hot-dip galvanized layer contains a polygonal zinc-iron alloy phase, the ratio R of the length to the width of the polygonal zinc-iron alloy phase is not less than 1 and not more than Rlt; 2. The alloyed hot-dip galvanized steel plate is good in deep drawability. The invention further discloses a manufacturing method of the alloyed hot-dip galvanized steel plate, the manufacturing method is suitable for the low-silicon steel plate, the alloy phase structure of a steel plate coating is controlled by controlling the air-fuel ratio in the preheating stage and the dew point DP in the soaking stage in the continuous annealing step and the alloying temperature in the alloying step, and therefore the deep drawing performance of the steel plate is improved.
Owner:BAOSHAN IRON & STEEL CO LTD

Method and device for stamping and forming flat motor shell

The invention discloses a method and a device for stamping and forming a flat motor shell, the method comprises 14 stations which are sequentially arranged from material sheet entering to finished product outputting, and sheet materials are sequentially conveyed to each station for deep drawing, forming, shaping, trimming and punching operation. According to the method, the complex deep drawing process is divided into seven scientific and progressive working steps, a mold in a specific shape is matched for each step, stable flowing of materials is effectively guided, and the industrial problems that in the deep drawing process, a high-depth motor shell in an irregular shape is prone to being cracked and wrinkled, and the wall thickness is uneven are fundamentally solved.
Owner:DONGFENG AUTO PARTS (GRP) CO LTD GENERAL CASTING & FORGING BRANCH

Power battery aluminum shell manufacturing method, power battery aluminum shell and power battery

The invention relates to a manufacturing method of a power battery aluminum shell, the power battery aluminum shell and a power battery. The manufacturing method comprises the following steps: deeply drawing an aluminum material to form a cuboid-shaped shell blank with an opening at one end; punching the bottom of the shell blank to form a cylindrical structure with two opposite rectangular or circular open surfaces; roughly machining the edges of the two rectangular or circular open surfaces in sequence; a stamping mechanism driven by a servo motor is used for stamping the side wall from the inside to the outside of the cylindrical structure to form a step structure; and sequentially carrying out finish machining on the edges after the step structures are formed. According to the invention, the specific processing sequence is combined with the pioneering step stamping process in the industry, so that the problem that only one end of the shell is provided with the step and the step cannot be processed at the other end is firstly solved, and the problem that the R angle is easy to deform in the processing process is secondly solved, and therefore, the aluminum shell product with high precision, high strength and good adaptability is obtained.
Owner:HUIZHOU KEDALI PRECISION IND CO LTD

Horizontal drawing forming system and drawing forming method thereof

The invention discloses a horizontal deep drawing forming system and a deep drawing forming method thereof. The horizontal deep drawing forming system comprises a deep drawing base, a deep drawing deformation thinning female die, a deep drawing guide ring and a deep drawing male die. The drawing male die, the drawing guide ring, the drawing deformation thinning female die and the drawing base are coaxially distributed. The deep drawing forming method comprises the steps that a blank is clamped by a mechanical arm and placed at the front end of the deep drawing guide ring, the deep drawing male die moves forwards to be pressed into the blank, the mechanical arm loosens and retreats, the deep drawing male die drives the blank to be sequentially pressed into the deep drawing guide ring and the deep drawing deformation thinning female die, a workpiece is shaped, a discharger is started to be clamped on the shaped workpiece, and the finished product is obtained. And the drawing male die moves backwards to detach the shaped workpiece. The drawing deformation thinning female die is integrally designed, synchronous hole shrinkage deformation and thinning are achieved, the problems of wall thickness deviation and serious external scratches are solved, the die investment is reduced, and the die cost is reduced. And the drawing guide ring is arranged to avoid unbalance loading in the die entering process caused by gravity falling of the male die and the blank.
Owner:SINOMA SCI & TECH CHENGDU CO LTD

Deep drawing tool with macrostructure

UndeterminedDE102024212240A1Deep drawingMechanics
The invention relates to a deep-drawing tool designed as a die or blank holder. It has at least one contact surface (1) for receiving a workpiece and at least one macrostructure (2). The macrostructure (2) is formed on or at the contact surface (1), and the macrostructure (2) is designed to control the material flow of the workpiece in such a way that at least one of the following parameters—locally occurring stresses, locally occurring thickness variations, locally occurring differences in material properties, or locally occurring springback—is minimized.The macrostructure (2) is formed from at least one elevation (3) of the contact surface (1) with a defined distance of the elevation tip from a form-ideal reference of the contact surface (1) as height and a defined path on the contact surface (1), wherein the height of the at least one elevation (3) of the contact surface (1) over the path is not constant and is at least 5% of the thickness of the workpiece.
Owner:TECHNISCHE UNIVERSITAT DRESDEN

Large cross-section pipe filling and composite forming method and device

ActiveCN117000859BPipe fittingPipe
The application provides a large-section differential pipe liquid filling composite forming method and device, relates to the technical field of metal pipe forming, and the large-section differential pipe liquid filling composite forming method comprises the following steps: step one, plate material blank is subjected to liquid filling deep drawing forming to form a conical shell; step two, the closed end of the conical shell is cut to obtain a conical pipe with open ends; and step three, the conical pipe is subjected to liquid filling pressure forming to obtain a target pipe. The application further provides a large-section differential pipe liquid filling composite forming device. The large-section differential pipe liquid filling composite forming method and device provided by the application can improve the size precision and quality of the pipe.
Owner:HARBIN INST OF TECH

A water-soluble shearing oil and its preparation method

ActiveCN117701328BHigh oil film strengthflat surfaceLubricant compositionOil canPunching
This invention discloses a water-soluble punching and shearing oil, comprising the following components in 100 parts by weight: 20.0-35.0 parts rust inhibitor; 10.0-20.0 parts lubricant; 3.0-10.0 parts surfactant; 0.5-3.5 parts bactericide and mildew inhibitor; 0.5-2.0 parts other additives; and the balance being deionized water. This punching and shearing oil can be used in various sheet metal deep drawing and punching processes. It can be diluted for use, effectively reducing users' oil costs. Simultaneously, it avoids oil mist and VOC problems caused by using oily products in the workshop, thus purifying the workshop operating environment. Parts punched and sheared using this invention have smooth surfaces, complete cuts, good gloss, and are burr-free. Processed parts are easy to clean or require no cleaning, significantly saving on overall costs such as materials, water resources, and labor.
Owner:DONGGUAN PACIFIC BOGAO LCBRICANT CO LTD

Insulating multi-layer Clip applied to power module and preparation method of insulating multi-layer Clip

The invention discloses an insulating multi-layer Clip applied to a power module and a preparation method of the insulating multi-layer Clip, aging and layering risks of a traditional adhesive are eliminated through an adhesive-free laminated structure of the insulating multi-layer Clip, heat resistance, chemical resistance and long-term reliability of a product are improved, and meanwhile, an adhesive layer is omitted, so that the overall thickness of the product is thinner and more flexible; through the connection of deep drawing forming and the surface silver / nickel plating process, the three-dimensional assembly requirement of the insulation multi-layer Clip is met, and the conductive performance and the contact reliability of the circuit are improved. Multiple alignment errors are avoided through a one-time pressing process, the interlayer alignment precision is extremely high, the thickness of the dielectric layer is uniform, and the electrical performance consistency is good; the size precision and the circuit integrity of the product are guaranteed through the working procedures of drilling, etching, laser cutting and the like in combination with the precise temperature control and positioning technology. The method can be applied to the technical field of chip packaging.
Owner:ACCOPOWER SEMICON CO LTD

Hydrodynamic deep drawing forming die and method for stepped part

The invention provides a hydrodynamic deep drawing forming die and method for a step-shaped part, and relates to the technical field of plate forming. The forming die comprises a male die, an edge pressing part, a female die, a left supporting block capable of moving up and down and a right supporting block capable of moving up and down; the left supporting block is arranged at the left end of the lower surface of the upper step of the male die, the right supporting block is arranged at the right end of the lower surface of the upper step of the male die, a hollow part is defined by the left supporting block and the right supporting block, and the inner wall of the hollow part is attached to the side wall of the lower step of the male die; the outer wall contour of the hollow part coincides with the downward projection of the side wall contour of the upper step of the male die; an inner cavity of the female die is composed of an upper concave cavity and a lower concave cavity, and a fluid channel communicated with the outside is formed in the inner wall of the lower concave cavity. When the forming die provided by the invention is used for forming the stepped part, excessive thinning of a plate and a plate suspension area corresponding to the two layers of stepped fillets of the convex die can be avoided, and wrinkling of the plate suspension area is avoided.
Owner:HARBIN INST OF TECH

Aerosol can processing device

The invention discloses an aerosol can processing device, and belongs to the technical field of aerosol can processing, the aerosol can processing device comprises an elastic ejection mechanism, the elastic ejection mechanism is arranged on a lower pressing seat, and the ejection end of the elastic ejection mechanism extends upwards to eject out an upper top cover tightly attached to a female die. According to the aerosol can machining device, the male die and the female die jointly form the die assembly, in the process of curling an upper top cover, the upper top cover formed through deep stamping or an original metal plate needs to be precisely positioned into the female die of the lower pressing base, it is ensured that the center of a workpiece is completely aligned with a die cavity, and therefore the machining efficiency is improved. Then the upper pressing seat is driven by an equipment operating mechanism to vertically press downwards along the guide columns, so that the male die and the female die are accurately butted to form a die cavity for forming a hemming section, in the die opening stage, the male die and the female die are separated under the action of a separating mechanism, and an upper top cover tightly attached to the female die is ejected out through the ejection end of an elastic ejection mechanism under the action of the elastic ejection mechanism; according to the device, the product taking efficiency is remarkably improved.
Owner:GUANGZHOU HENGYU IRON-PRINTTING & CAN MAKING CO LTD

Deep drawing package

To provide a deep drawing package that exhibits stable peel strength when sealed within a temperature range of 120 to 160°C, even if a thermal history is applied to a bottom material during deep drawing molding.SOLUTION: A deep drawing package includes a top material and a bottom material. The top material is a composite film in which a sealant layer, an adjacent layer, and an outer layer are laminated in this order. The sealant layer is made of a composition containing glycol-modified polyethylene terephthalate (PET-G). The adjacent layer is made of a modified polyolefin resin containing at least one of acid-modified polyethylene, ethylene-acrylic ester copolymer, and ethylene-acrylic ester copolymer-maleic anhydride copolymer. The bottom material has a recessed part formed by deep drawing and includes PET-G in a layer facing the top material. The deep drawing package is sealed such that the sealant layer faces the bottom material, and the package has easy-to-open properties.SELECTED DRAWING: None
Owner:KURIRON KASEI

Aluminum alloy sheet for deep drawing and method for manufacturing the same

ActiveJP7835089B2Thin slabDeep drawing
To provide an Al-Fe-Mn-based aluminum alloy sheet that has excellent hardness and formability, and a predetermined earing ratio.SOLUTION: An aluminum alloy sheet for drawing process contains Fe by 1.05 to 1.50%, Mn by 0.40% or less, Ti by 0.002 to 0.150%, and B by less than 0.05% in mass%, and the remainder consists of Al and impurities. The alloy sheet has a component composition regulated to Si: less than 0.40%, Cu: less than 0.03%, Mg: less than 0.05%, and V: less than 0.03% as impurities, and has the tensile strength of 170 MPa or less, the earing ratio of -2% or more and 2% or less.SELECTED DRAWING: None
Owner:NIPPON LIGHT METAL CO LTD

Preparation method for improving plastic strain ratio of 210MPa-grade high-strength IF steel

The invention discloses a preparation method for improving the plastic strain ratio of 210MPa-grade high-strength IF steel. The preparation method comprises the following steps: 1) converter production; 2) RH furnace production; 3) continuous casting production; 4) heating the casting blank; (5) finish rolling; 6) a continuous annealing process; the alloy comprises the following chemical components in percentage by weight: less than or equal to 0.0030% of C; s : 0.05 to 0.15%; 0.50% to 0.80% of Mn; 0.055 to 0.080 percent of P (phosphorus); s is less than or equal to 0.010%; the content of Al < t > is 0.015 to 0.060 percent; t is 0.020% to 0.050%; 0.020% to 0.050% of Nb; n is less than or equal to 0.0040%, and B is 0.0004-0.0015%; and the balance of iron and impurities. By reasonably optimizing the process, the r value of the 210Mpa-grade high-strength IF steel is increased while the strength performance of the 210Mpa-grade high-strength IF steel meets the standard requirement, so that the deep drawability of the steel grade is improved.
Owner:BAOTOU IRON & STEEL (GROUP) CO LTD

Hammer hot deep drawing forming die and forming method for thin-wall deep-cavity structure part

This invention discloses a hammer-operated hot drawing die and forming method for thin-walled deep-cavity structural parts, aiming to solve the problems of wall thickness reduction and uneven wall thickness distribution in traditional sheet metal plastic forming processes, which cannot meet the requirements of subsequent processing. The hammer-operated hot drawing die for thin-walled deep-cavity structural parts includes an upper die, a lower die, an underpressure ring, and a closing ring. When the raw material of the part is a 15mm-30mm titanium alloy sheet, the hot drawing process uses a 3-pass forming method, with a heating temperature of 700℃-800℃ and a die drop height of 50mm-60mm per pass. When the raw material of the part is a 15mm-30mm stainless steel sheet, the hot drawing process uses a 3-pass forming method, with a heating temperature of 950℃-1050℃ and a die drop height of 50mm-60mm per pass. As shown in Figure 1, the thin-walled deep-cavity structural parts produced by this invention have uniform wall thickness distribution, high forming efficiency, and are suitable for mass production.
Owner:XIAN SPACE ENGINE CO LTD

Ultrasonic current synergistic forming device and method for high-strength aluminum alloy scalloped segment

The invention provides a high-strength aluminum alloy scalloped segment ultrasonic current collaborative forming device and method.The device comprises an ultrasonic vibration device, a deep drawing forming device and a current control device, and the deep drawing forming device comprises a die pressing head, a heat-resisting flexible male die and a rigid female die; the heat-resisting flexible male die is installed in the upper die frame, the rigid female die is installed on the lower die frame, a blank machining station is formed between the heat-resisting flexible male die and the rigid female die, the die pressing head is installed at the top of the heat-resisting flexible male die, and the ultrasonic vibration device is installed at the top of the die pressing head. The ultrasonic vibration and the pulse electric field are introduced into forming at the same time, the ultrasonic vibration and the current heat effect are utilized at the same time, forming force can be reduced, springback can be reduced, and forming precision can be improved. Conventional hot working is replaced, a die device is simplified, die loss is reduced, and machining efficiency is improved.
Owner:SHANGHAI SPACE PRECISION MACHINERY RES INST

Non-sticky frying pan and manufacturing method

The invention discloses a non-sticky wok and a manufacturing method, the non-sticky wok is a bottomed wok formed by drawing a plane plate, the non-sticky wok comprises a wok bottom and a wok wall rising around the wok bottom, and the top of the wok wall defines a wok edge; the wok wall is provided with a thickness reduction belt formed in the deep drawing forming process, and the thickness reduction belt is arranged between the wok bottom and the wok edge and extends in the height direction of the wok; the outer surface of the thickness reduction belt is provided with a plurality of annular grooves extending in the circumferential direction of the pot wall, and the inner surface of the thickness reduction belt is provided with annular oil storage grooves which are the same as the annular grooves in number and correspond to the annular grooves in position. Wherein the annular groove is characterized in that the wall thickness is preset on the outer side of the plane plate before the frying pan is deep drawn, and the annular oil storage groove is characterized in that the annular oil storage groove is recessed on the inner surface of the pan wall due to the fact that the annular groove is easier to generate tensile deformation compared with other parts in the deep drawing process; compared with the prior art, the production process of the non-sticky frying pan can be simplified, and the production cost can be reduced.
Owner:HUBEI RONGTAI COOKWARE CO LTD

Method for monitoring wrinkling of solid elements in a simulation of a forming process of a sheet metal rotary body part

ActiveCN117669325BSolve the problem of being unable to determine wrinkles based on stress stateFlexible wrinkle judgmentElement modelDeep drawing
A kind of plate rotary body part simulation forming process entity unit wrinkle monitoring method, by constructing rotary body part forming simulation model and carrying out sheet metal deep drawing forming process simulation, extract the surface geometric information of rotary body part in simulation result, obtain the degree of surface fluctuation by converting coordinate system and comparison calculation, and then accumulate to obtain overall wrinkling evaluation.The present application does not need to establish the relationship between strain and material wrinkling instability, and obtains the micro-wrinkling on the surface of the part in the deformation simulation process by geometric method, directly judges the fluctuation of the surface of the finite element model part according to the wrinkling in the forming process of the part, and efficiently completes the fluctuation (wrinkling) comprehensive judgment of the simulation forming surface of the whole rotary body part.
Owner:SHANGHAI JIAOTONG UNIV

A copper-aluminum composite strip and its preparation method

ActiveCN116727642BMetal stripsComposite plate
This invention relates to a copper-aluminum composite strip and its preparation method, belonging to the field of metal strip material preparation. The preparation method of the copper-aluminum composite strip of this invention includes the following steps: contacting molten aluminum at 680–700°C with an unpreheated copper strip and then casting and rolling it; during the casting and rolling process, controlling the temperature of the rolls to ≤100°C, and the running speed of the copper-aluminum composite strip to be 0.5–0.8 m / min. The copper-aluminum composite strip prepared by the method of this invention has a unique multi-level heterogeneous layered structure with a macroscopic copper / aluminum heterogeneous layered structure and a nanoscale double-layer copper-aluminum compound layer interface. This can significantly improve the conductivity and ultra-high ductility of the copper-aluminum composite strip while improving the preparation efficiency, allowing the copper-aluminum composite strip to be further processed by deep drawing, bending, or twisting to prepare high-end copper-aluminum composite conductive devices.
Owner:HENAN UNIV OF SCI & TECH

Deep drawing device, packaging machine with deep drawing device and method for operating a deep drawing device

The invention relates to a deep-drawing device for deep-drawing a continuously supplied film web (1), a dependent packaging machine and a corresponding method. A forming station (8) is provided, which is periodically timed, moves from a start position (6) to an end position (7) and from there back to the start position (6), wherein each gauge plate (41, 42, 43, 44) is brought into connection, in sequence, first with a forming vacuum mechanism (11) and then with a subsequent holding vacuum channel (12). The forming vacuum mechanism (11) is part of the periodically moving forming station (8). The holding vacuum channel (12) comprises two telescopic channel sections (13, 14) which are joined into one another, wherein the first telescopic channel section (13) is part of the periodically moving forming station (8) and wherein the second telescopic channel section (14) is assembled position-fixed with respect to a stationary machine support (2).
Owner:HARRO HOFLIGER VERPACKUNGSMASCHEN

Thermoforming device

PCT designated stageWO2026014049A1ThermoformingDeep drawing
A thermoforming device (100) for forming a resinous sheet (S) using a die (150) is provided. The thermoforming device (100) comprises: a sheet holder (50) which has a shape conforming to the die (150) and has the function of positioning and holding the resinous sheet (S); and a clamp (65) which presses the resinous sheet (S) against the surface of the die (150) when the resinous sheet (S) is placed along the surface of the die (150) by bringing the sheet holder 50 close to the die (150). The die (150) has a first jig receiving part (150b) for positioning the sheet holder (50). Due to the configuration, the resinous sheet (S), even in deep drawing, is less likely to have unevenness in thickness.
Owner:ASANO LABORATORIES CO LTD

A production method of a thick zinc layer high surface hot-dip galvanizing super deep drawing plate for an automobile outer plate

This invention discloses a method for producing thick zinc-coated, high-surface-coating hot-dip galvanized extra-deep-drawing steel sheets for automotive exterior panels. The invention uses Ti-IF steel and controls the processes of steelmaking, hot rolling, pickling, and hot-dip galvanizing. Firstly, by controlling the process of producing pure steel in the steelmaking process, the source of inclusions is reduced. Simultaneously, in the hot rolling process, the heating process in the heating furnace is controlled to reduce the occurrence of peeling. Furthermore, the pickling, reduction rate, and hot-dip galvanizing process parameters in the cold rolling process are controlled to reduce the impact of peeling defects. This results in a steel for producing thick zinc-coated, high-surface-coating hot-dip galvanized automotive exterior panels, which has a high surface zinc coating thickness and good formability, meeting the complex forming and high surface requirements of automotive exterior panels. After coating, the surface is free of point defects and has excellent surface finish. The process is simple, requires no additional investment in equipment upgrades, and is easy to industrialize.
Owner:武汉钢铁有限公司

Temperature sensor manufacturing process

This invention discloses a temperature sensor manufacturing process. The temperature sensor includes a temperature sensing module, a metal shell formed by deep drawing a sheet metal part, and an insulating plug. The metal shell has a cavity, and the temperature sensing module is attached to the bottom of the cavity. The temperature sensing module includes a thermistor and an insulating layer. The bottom of the lead electrode of the thermistor is separated from the metal shell by the insulating layer. The insulating plug is positioned and inserted into the cavity. The inner end of the insulating plug has a conductive contact that is electrically connected to the lead electrode. The outer end of the insulating plug has a lead wire that is electrically connected to the conductive contact. In this invention, the temperature sensing module is first mounted on the sheet metal part. When the sheet metal part is deep drawn to the metal shell, the temperature sensing module is formed on the inner bottom surface of the metal shell. The insulating plug is positioned and inserted into the metal shell, allowing the insulating plug to connect with the thermistor of the temperature sensing module. This achieves rapid installation of the temperature sensor, and the position of the temperature sensing module is fixed for each temperature sensor, resulting in high consistency.
Owner:GUANGDONG SHUNDE KAIGE ELECTRONIC IND CO LTD

Vacuum flash tower based on vacuum deep distillation and crude oil processing system and method

The invention discloses a vacuum flash tower based on vacuum deep distillation and a crude oil processing system and method, and belongs to the technical field of petroleum refining. According to the method, vacuum residue at the bottom of a vacuum tower is subjected to secondary flash evaporation by additionally arranging a vacuum flash evaporation tower, and light components (mainly wax oil) in the vacuum residue are further recovered. The vacuum flash tower adopts a combined design of an upper packed tower section and a lower plate tower section, the packed tower section is used for absorbing light components, and the plate tower section is used for prolonging the residence time of residual oil. And part of vacuum third-line wax oil extracted from the side line of the vacuum tower enters the top of the flash tower as an absorbent, absorbs flash light components and then is refined back to the vacuum tower, so that the product quality is ensured. The vacuum flash tower and the vacuum tower share a vacuum system, and the tower pressure is maintained at 4 kPa. According to the method, the vacuum residue extraction rate is remarkably increased, vacuum equipment does not need to be additionally arranged, the problem that light-component metal and residual carbon exceed the standard in a traditional process is solved, and economic benefits are remarkable. The method is suitable for heavy crude oil processing and has the advantages of low equipment investment, simple operation and the like.
Owner:DALIAN UNIV OF TECH

A u-shaped part thinning deep drawing forming die and application thereof

This invention relates to a U-shaped thinning and deep drawing die and its application. The die includes a punch assembly (1) and a die assembly (2) for thinning and deep drawing strip material into a U-shaped part. The punch assembly (1) includes a punch (11), and the die assembly (2) includes a die (21). The outer edge of the punch (11) is provided with a plurality of punch working strips (111), and the inner edge of the die (21) is provided with a plurality of die working strips corresponding to the punch working strips (111). (211); The punch working strip (111) is planar and is evenly distributed circumferentially along the outer edge of the punch (11), and the die working strip (211) is planar and is evenly distributed circumferentially along the inner edge of the die (21); During deep drawing, the U-shaped part simultaneously abuts against both the punch working strip (111) and the die working strip (211), with the inner sidewall of the U-shaped part abutting against the punch working strip (111) and the outer sidewall abutting against the die working strip (211). Compared with the prior art, the present invention can perform thinning deep drawing of high-precision U-shaped parts with different specifications and different thinning rates, improving the versatility and flexibility of the mold.
Owner:SHANGHAI JIAOTONG UNIV

A low-carbon, short-process, high-throughput method for producing expandable, deep-drawing aluminum coils for cookware.

This invention belongs to the field of aluminum alloy production technology. Specifically, it discloses a method for low-carbon, short-process, high-throughput production of expandable deep-drawing cookware aluminum coils. The raw materials are electrolytic aluminum molten metal and recycled aluminum waste. The production process is carried out by continuous casting and rolling. Compared with the current conventional hot rolling production method, it can significantly optimize the production process. It eliminates the need for ingot cutting and milling and multiple hot rough rolling processes. The cold rolling process only requires two rolling passes to complete the production, shortening the work-in-process time, effectively reducing production costs, and resulting in superior finished product performance, especially high and stable elongation, small difference in transverse and longitudinal elongation, and good material isotropy. It can meet the grain size requirements of the billet without the use of aluminum ingots. End customers will not experience cracking during deep drawing and expansion. It achieves green, environmentally friendly, and low-carbon goals while ensuring stable finished product quality and enabling high-throughput production. The billet can be produced at a high efficiency of more than 27 tons per hour, enabling efficient order delivery.
Owner:LUOYANG LONGDING ALUMINUM

Preparation method of battery shell iron

The preparation method of the battery shell iron comprises the following steps: S1, cleaning; s2, nickel plating; s3, tin plating; s4, heat treatment is conducted under hydrogen protection gas, and a Fe-Ni alloy layer and a nickel-tin alloy layer are formed; the grain size of the tinplate substrate after heat treatment reaches 6-7; s5, deep drawing forming is conducted, specifically, the tinplate base plate is machined into the battery shell through a deep drawing forming technology; and S6, groove rolling: rolling a circle of groove in the periphery of the battery shell. According to the preparation method of the battery shell iron, the tinplate base plate manufactured through the method can remarkably reduce hardness fluctuation of the tinplate base plate, and the consistency and reliability of products are improved. And the grain size can reach 6-7, the hardness is uniform, the difference is small, the hardness requirement of deep drawing of the battery shell is met, and cracks cannot occur when the groove is formed through rolling.
Owner:ZHONGSHAN ZHONGYUE TINPLATE IND CO LTD

Production method of cold-rolled product for high deep drawing based on double-roller cast rolling

The invention belongs to the technical field of metallurgy and metal material processing, and relates to a production method of a cold-rolled product for high deep drawing based on double-roller cast rolling. By combining high scrap steel ratio smelting with an efficient impurity control technology, on the premise of ensuring low carbon emission, the cleanliness of the molten steel is remarkably improved, excellent deep drawing performance is obtained while the minimum yield strength of 170 MPa is kept, and the high-scrap-steel-ratio molten steel passes SCS high scrap steel ratio certification and meets the international green purchase standard.
Owner:ZHANGJIAGANG ZHONGMEI UCS TECH CO LTD +3

Precipitation hardening stainless steel rotary body pipe fitting forming process

The invention provides a forming process for a precipitation-hardening stainless steel rotary body pipe fitting. The forming process comprises the following steps: S1, blanking; s2, the first-order mold and the plate of the precipitation-hardening stainless steel material are both heated to a first preset temperature; s3, the plate is formed into a first semi-finished product and a second semi-finished product through an isothermal hot deep drawing procedure; s4, the first semi-finished product and the second semi-finished product are subjected to the first hot air expansion procedure through a first-order mold; s5, cooling; s6, edge pressing flanges of the third semi-finished product and the fourth semi-finished product are cut; s7, the first half pipe fitting and the second half pipe fitting are welded into a semi-finished pipe fitting; s8, the closed ends of the two ends of the semi-finished pipe fitting are cut; s9, plugs and air guide pipes are installed at openings in the two ends of the cut semi-finished pipe fitting; s10, the second-order mold and the semi-finished pipe fitting are both heated to a second preset temperature range; s11, carrying out a second hot gas expansion process; s12, cooling is conducted; and S13, the part is cut to the final size.
Owner:TIANJIN WUYUE AVIATION TECH CO LTD +2

High-temperature titanium alloy deep drawing forming die

The utility model relates to a high-temperature titanium alloy drawing forming die applied to the technical field of drawing forming, which comprises a lower die, a bottom plate and an upper die, the bottom plate is provided with the lower die, the lower die is vertically provided with a plurality of ejector rod via holes, the upper die is arranged above the lower die, a blank holder is arranged between the bottom plate and the upper die, and the ejector rod via holes are arranged on the lower die. An inner hole matched with the lower die is formed in the middle of the blank holder, and weight reduction grooves are formed in the blank holder and the upper die; a plurality of spraying pipes facing the inner hole are vertically inserted into the blank holder, the bottoms of the spraying pipes are connected with a liquid conveying mechanism, and the liquid conveying mechanism is used for conveying a boron nitride solution into the spraying pipes, by adopting the structure, a titanium alloy material can be well drawn, the tearing condition is reduced, the quality of a produced product is improved, and the production efficiency is improved. The formed weight reducing groove can reduce the material cost and increase the heating rate, the ejector rod ejects out the product subjected to deep drawing forming through the ejector rod via hole, a boron nitride solution is automatically sprayed to the surface of the material, and the situation that the side wall of the product is broken is reduced.
Owner:GUIAN NEW DISTRICT BOHAO MASCH CO LTD