Heat conductive magnesium alloy and method for preparing same

The invention relates to a heat-conductive magnesium alloy and a preparation method thereof. The heat-conductive magnesium alloy comprises the component contents of: 1.5-10wt percent of Ag, 0.15-2.0 wt percent of Zr, 0.3-3.5wt percent of Ce, 0-1.5wt percent of Nd, 0-2.5wt percent of La, 0-0.5wt percent of Pr, wherein each content of Nd, La and Pr can not be zero at the same time or each content of Nd, La and Pr is zero at the same time and the rest component is Mg. Pure Mg ingot, pure Ag ingot or master alloy of Mg-Ag, master alloy of Mg-Zr, pure Ce ingot or rich-cerium mischmetal ingot or Ce or master alloy of rich-cerium mischmetal ingot and magnesium are used as raw materials; pure Mg ingot is smelted and alloyed; after castings are made, solid dissolving treatment and aging treatment are the next steps; or after making billet, homogenization thermal treatment and aging treatment are the next steps. The magnesium alloy of the invention, at the temperature of 20 DEG C, has thermal conductivity ...

Piston drilling tool

The utility model relates to a piston drilling tool, in particular to a piston drilling tool. The problem that a drilled hole deviates from an accurate position due to the fact that an existing pistoncannot be effectively fixed in the drilling process is solved. The piston drilling tool is composed of a lower bottom plate, a supporting plate, a positioning plate, a positioning block, a hole positioning plate, a V-shaped block, a pull rod, a screw and a top plate. The fixing device is used for fixing the piston during drilling.

Manufacture method of aluminum alloy sheet for high-speed train structure

The invention relates to an aluminum alloy sheet for a high-speed train structure and a manufacture thereof, in particular to an aluminum alloy sheet and a manufacture thereof. The preparation method comprises the following steps of: (1) weighting raw materials; (2) melting; (3) casting; (4) homogenized annealing; (5) hot rolling; (6) cold rolling; (7) quenching; and (8) one-stage ageing treatment. The aluminum alloy sheet for the high-speed train structure has the tensile strength of 410-425 Rm/N/mm<2>, the yield strength of 360-382 RP0.2/N/mm<2> and the elongation rate of 12.2-13.4 percent.

Preparation method of aluminum-magnesium-erbium alloy cast ingot

The invention discloses an aluminum-magnesium-erbium alloy cast ingot and a preparation method thereof, and relates to an alloy and a preparation method thereof, which solve the problems of poor corrosion resistance, low intensity, short service life and high cost of the existing LY12 aluminum alloy material. The aluminum-magnesium-erbium alloy cast ingot is prepared from Si, Fe, Cu, Mn, Mg, Zn, Er, Be, Ti and Zr in the following steps: 1, weighing the raw materials; 2, preparing an aluminum alloy melt; and 3, sequentially filtering the aluminum alloy melt with ceramic filter disks of 30 ppi and 50 ppi, then pouring in a crystallizer, and casting into the aluminum-magnesium-erbium alloy cast ingot. The intensity of the aluminum-magnesium-erbium alloy cast ingot is at least 40 MPa higher than that of the LY12 alloy cast ingot, and the corrosion resistance of the aluminum-magnesium-erbium alloy cast ingot is one grade higher than that of the LY12 alloy cast ingot. Besides, compared withthe ...

Preparation method of large-size aluminum alloy ingot

The invention discloses a preparation method of a large-size aluminum alloy ingot, relating to a preparation method of aluminum alloy ingots, and the provided preparation method of a large-size aluminum alloy ingot solves the problem of easy cracking during preparing the large-size aluminum alloy ingots by the traditional aluminum alloy ingot preparation method. The method comprises the following steps of: spreading and scattering a 1# flux at the bottom of a smelting furnace; adding aluminum ingots, electrolytic copper, zinc ingots, aluminum-silicon intermediate alloy, aluminum-iron intermediate alloy, aluminum-manganese intermediate alloy, aluminum-chromium intermediate alloy and aluminum-titanium intermediate alloy into the smelting furnace and spreading and scattering a covering agent; heating to ensure that the materials are smelted, sequentially adding a zirconium composite salt and magnesium ingots as well as smelting and refining to obtain an aluminum alloy melt; filtering the aluminum ...

Preparation method of large-size aluminum alloy ingot

The invention discloses a preparation method of a large-size aluminum alloy ingot, relating to a preparation method of aluminum alloy ingots, and the provided preparation method of a large-size aluminum alloy ingot solves the problem of easy cracking during preparing the large-size aluminum alloy ingots by the traditional aluminum alloy ingot preparation method. The method comprises the following steps of: spreading and scattering a NO. flux at the bottom of a smelting furnace; adding aluminum ingots, electrolytic copper, zinc ingots, aluminum-silicon intermediate alloy, aluminum-iron intermediate alloy, aluminum-manganese intermediate alloy, aluminum-chromium intermediate alloy and aluminum-titanium intermediate alloy into the smelting furnace and spreading and scattering a covering agent; heating to ensure that the materials are smelted, sequentially adding a zirconium composite salt and magnesium ingots as well as smelting and refining to obtain an aluminum alloy melt; filtering the ...

Heat conductive magnesium alloy and method for preparing same

The invention relates to a heat-conductive magnesium alloy and a preparation method thereof, the heat-conductive magnesium comprises the component contents of: 1.5-11wt percent of Zn, 0.5-5wt percent of Cu, 0.15-1wt percent of Mn, 0.1-2.5wt percent of Ag, the rest component is Mg. Pure Mg ingot, pure Zn ingot, electrolytic copper and electrolytic manganese or master alloy Cu-Mn are used as raw materials and pure Mg ingot is smelted and alloyed; after castings are made, then solid dissolving treatment and aging treatment are performed; or after making billet, homogenization thermal treatment is the next step; sheet metal, tube, profile, rod, wire or other casting are made by adopting the technologies of rolling, extrusion, drawing, forging or distortion process, then the aging treatment is carried out. The magnesium alloy of the invention, at the temperature of 20 DEG C, has thermal conductivity rate of above 120W. (m.K)-1, tensile strength of above 340 Mpa and yielding strength of above ...

Track of flexible quick roller shutter door

The invention belongs to the technical field of industrial quick roller shutter door tools, and in particular relates to a track of a flexible quick roller shutter door. The track of the flexible quick roller shutter door comprises a main track body, wherein a sliding rail cavity is formed in the main track body; a bayonet is formed in one side of the main track body and is communicated with the sliding rail cavity; the other side of the main track body is connected with a track bulge; a clamping groove is formed between the track bulge and the main track body. The track of the flexible quick roller shutter door can be used for well preventing door body tension cloth from being separated from a door body, and is simple in structure and reasonable in design.

Aluminum-magnesium-erbium alloy cast ingot and preparation method thereof

The invention discloses an aluminum-magnesium-erbium alloy cast ingot and a preparation method thereof, and relates to an alloy and a preparation method thereof, which solve the problems of poor corrosion resistance, low intensity, short service life and high cost of the existing LY12 aluminum alloy material. The aluminum-magnesium-erbium alloy cast ingot is prepared from Si, Fe, Cu, Mn, Mg, Zn, Er, Be, Ti and Zr in the following steps: 1, weighing the raw materials; 2, preparing an aluminum alloy melt; and 3, sequentially filtering the aluminum alloy melt with ceramic filter disks of 30 ppi and 50 ppi, then pouring in a crystallizer, and casting into the aluminum-magnesium-erbium alloy cast ingot. The intensity of the aluminum-magnesium-erbium alloy cast ingot is at least 40 MPa higher than that of the LY12 alloy cast ingot, and the corrosion resistance of the aluminum-magnesium-erbium alloy cast ingot is one grade higher than that of the LY12 alloy cast ingot. Besides, compared with the ...

Indoor strong-weak circuit open exposed wiring and linear concealed wiring combined wiring equipment and method

The invention relates to indoor strong-weak circuit combined wiring equipment which is far away from the ground, convenient to mount, maintain and modify. Each wire support plate and a wall form a wire groove with an upward opening. Each wire groove is mounted close to the top of the wall and needs no cover plates, and wire radiation is facilitated. Each wire support plate is of a plane structure, so that materials are saved to the maximum extent. The materials are further saved by utilizing the wall. Each wire groove can be taken down as a whole, so that the wire groove is economical and reusable. A main circuit is arranged 15-35cm away from the top of the wall through open exposed horizontal wiring. Branch circuits leading to switch boxes and socket boxes adopts linear concealed vertical wiring, wire connectors are located above the wire support plates, strong circuits and weak circuits can be arranged independently or simultaneously according to specific conditions, wiring can be performed ...

Self-locking mechanism of top-bearing bidirectional motor-driven translation door without lower rail

Wind resistance mechanism for flexible rapid rolling door

The invention belongs to the technical field of an industrial rapid rolling door tool and particularly relates to a wind resistance mechanism for a flexible rapid rolling door. The invention discloses the wind resistance mechanism for the flexible rapid rolling door, which comprises door body tension cloth. The door body tension cloth is fixedly connected to a side row chain; the side row chain is clamped in a rail; the other end of the rail is clamped in a rail clamping part; the rail clamping part is connected with a door body border. According to the invention, the door body tension cloth can be well prevented from being separated from the rail; and the wind resistance mechanism has a very strong wind resistance effect and a simple structure and is reasonably designed.

Universal joint fork flash grinding device

The invention discloses a universal joint fork flash grinding device, and belongs to the field of grinding devices.The universal joint fork flash grinding device comprises a grinding platform, universal joint fork blanks and grinding products are stacked on the two sides of the grinding platform respectively, and a clamping mechanism is arranged on the upper surface of the grinding platform; the lower end of the cantilever is fixedly connected to one end of the polishing platform; the upper end of the lifting hydraulic cylinder is fixedly connected to the end, away from the grinding platform, of the cantilever, and a locking mechanism is arranged at the lower end of the lifting hydraulic cylinder; the upper end of the sleeve is connected to the output end of the lifting hydraulic cylinder and is connected with the locking mechanism; the upper end of the grinding seat ring is welded to the end, away from the lifting hydraulic cylinder, of the sleeve. According to the universal joint fork ...

Forged pipe production process

The invention discloses a forged pipe production process, and belongs to the field of forged pipe production, the forged pipe production process comprises the following steps: S1, blank pre-processing: preparing raw materials, heating and making blanks, and making the raw materials into blank materials; the blank material is subjected to forging pipe forging through a die, a workpiece is manufactured, gas between the die and the workpiece is exhausted after forging of the forging pipe is completed, and discharging is conducted, and the step S3 of forging post-treatment is conducted, specifically, the forged workpiece is subjected to saw cutting, quenching and aging, the workpiece is made to be formed into the forging pipe, and then the formed forging pipe is detected. Gas between the punch and the blank material flows through the exhaust gap, the phenomenon that the upper die core is difficult to pull out due to vacuum negative pressure between the punch and the blank material is reduced ...

Aluminum alloy sheet for high-speed train structure and manufacture thereof

The invention relates to an aluminum alloy sheet for a high-speed train structure and a manufacture thereof, in particular to an aluminum alloy sheet and a manufacture thereof. The sheet of the invention is prepared from the following elements: Zn, Mg, Mn, Cr, Zr, V, Cu, Si, Fe, Ti and Al. The preparation method comprises the following steps of: (1) weighting raw materials; (2) melting; (3) casting; (4) homogenized annealing; (5) hot rolling; (6) cold rolling; (7) quenching; and (8) one-stage ageing treatment. The aluminum alloy sheet for the high-speed train structure has the tensile strength of 410-425 Rm/N/mm<2>, the yield strength of 360-382 RP0.2/N/mm<2> and the elongation rate of 12.2-13.4 percent.

Self-locking mechanism of top-bearing bidirectional motor-driven translation door without lower rail

The invention discloses a self-locking mechanism of a top-bearing bidirectional motor-driven translation door without lower rails, comprising a bidirectional motor-driven translation door hoisted on a rail by a guide wheel, wherein the upper end of the side edge of the center seam of the bidirectional motor-driven translation door is hinged with a bent rod by a spindle, one end of the bent rod is adaptive to a center seam baffle arranged on the rail, and the other end of the bent rod is hoisted with a round steel bolt via a steel wire rope; and the round steel bolt is adaptive to a ground embedded part below the bidirectional motor-driven translation door. When the bidirectional motor-driven translation door is closed, the round steel bolt of the self-locking mechanism is inserted into the ground embedded part to prevent the lower edge of the center seam of the door to move front and back; and when the bidirectional motor-driven translation door is opened, the round steel bolt automatically ...

Heat conductive magnesium alloy and method for preparing same

The invention relates to a heat-conductive magnesium alloy and a preparation method thereof, the heat-conductive magnesium comprises the component contents of: 1.5-11wt percent of Zn, 0.5-5wt percent of Cu, 0.15-1wt percent of Mn, 0.1-2.5wt percent of Ag, the rest component is Mg. Pure Mg ingot, pure Zn ingot, electrolytic copper and electrolytic manganese or master alloy Cu-Mn are used as raw materials and pure Mg ingot is smelted and alloyed; after castings are made, then solid dissolving treatment and aging treatment are performed; or after making billet, homogenization thermal treatment is the next step; sheet metal, tube, profile, rod, wire or other casting are made by adopting the technologies of rolling, extrusion, drawing, forging or distortion process, then the aging treatment is carried out. The magnesium alloy of the invention, at the temperature of 20 DEG C, has thermal conductivity rate of above 120W. (m.K)-1, tensile strength of above 340 Mpa and yielding strength of above ...

Scroll mechanism of roller shutter door capable of transversely moving

The invention discloses a scroll mechanism of a roller shutter door capable of transversely moving, comprising a left wallboard and a right wallboard which are fixed on a wall body. A left transverse moving plate is arranged in a left wallboard guide rail groove of the left wallboard; a right transverse moving plate is arranged in a right wallboard guide rail groove of the right wallboard; and a scroll is arranged between the left transverse moving plate and the right transverse moving plate, wherein a scroll drive motor is arranged on the transverse moving plate on one side; and a transverse moving plate driving mechanism is arranged on the transverse moving plate on the at least one side of the left transverse moving plate and the right transverse moving plate. The matched sizes of a gear and a rack are reasonably designed; when a door strip is folded by rolling or unfolded by rolling, the scroll of the roller shutter door is driven by rotating a circle to move forward or backward at ...

Anti-tearing mechanism of flexible quick roller shutter door

The invention belongs to the technical field of industrial quick roller shutter door tools, and in particular relates to an anti-tearing mechanism of a flexible quick roller shutter door. The anti-tearing mechanism of the flexible quick roller shutter door comprises a door body frame, wherein a bolt is arranged on one side of the door body frame; a spring is arranged on the bolt; one end of the spring is connected with the bolt, and the other end of the spring is connected with the door body frame; the bolt penetrates through one side of the door body frame, extends to the other side of the door body frame, and then is connected with a track clamping piece; the track clamping piece is capable of pulling the bolt to move. The anti-tearing mechanism of the flexible quick roller shutter door is extremely excellent in wind resistance effect, simple in structure and reasonable in design.

Anti-release mechanism of flexible quick roller shutter door

The invention belongs to the technical field of industrial quick roller shutter door tools, and in particular relates to an anti-release mechanism of a flexible quick roller shutter door. The anti-release mechanism of the flexible quick roller shutter door comprises a track, wherein a sliding rail is arranged in one end of the track; an edge row chain is clamped into the sliding rail and is fixedly connected with door body tension cloth; the other end of the track is clamped into a track clamping piece. The anti-release mechanism of the flexible quick roller shutter door can be used for preventing the door body tension cloth from being released from a door body under the action of larger wind load, and is simple in structure and reasonable in design.

汉字音形三元输入法

... 汉字音形三元输入法，以汉字拼音首字母和笔划作为特征部件，其中笔划部件包括：单笔划、双笔划和多笔划，每个汉字和词组都用4个特征部件来定义，单字取拼音首字母+首字元+次字元+末字元，双字词取两个汉字的拼音首字母+首字元，与现有的各种汉字输入法对比，本发明有如下显著的特点：以构成汉字的最基本、最常用的拼音和笔划作为汉字的特征，笔划部件的取法简单直观，无需拆字，采用词组输入时以拼音为主，单字输入时拼音与字元相结合，四码输入，重码率极低，适合于听打和盲打，本发明还解决了在数字键盘上输入汉字难的问题，只要将区位码稍作记忆，就可在数字键盘上运用自如，具有中英文无需转换即可直接输入的效果，输入速度快。 ...

Edge row chain of flexible quick roller shutter door

The invention belongs to the technical field of industrial quick roller shutter door tools, and in particular relates to an edge row chain of a flexible quick roller shutter door. The edge row chain of the flexible quick roller shutter door comprises door body tension cloth, wherein one side of the door body tension cloth is connected with a plurality of chain bodies; a clamping groove is formed in one side of each chain body; a clamping plate which extends outwards is arranged on each chain body; the door body tension cloth can be clamped by the aid of the clamping plates and the clamping grooves. The edge row chain of the flexible quick roller shutter door can be used for well preventing the door body tension cloth from being separated from a track, and is extremely excellent in wind resistance effect, simple in structure and reasonable in design.

Chinese-character 'pronunciation-shape' three-element input method

A Chinese-character "three-element sound-shape" input method features that the beginning phonetic letter and the strokes including single stroke, dual-stroke and radical are used as characteristic elements, and each Chinese character or phrase is defined by 4 characteristic elements. Its advantages are simple and visual encoding, no need of splitting characters, 4-code input, low duplicate rate, easy use of numeral keypad, and high input speed.

High-strength high-toughness aluminum alloy pre-tensioned thick plate and preparation method thereof

A high-strength high-toughness aluminum alloy pre-tensioned thick plate and a preparation method thereof relate to an aluminum alloy pre-tensioned thick plate and a preparation method thereof and aim at solving problems that due to a poorly soluble compound which is formed by Fe, Si and other elements in 7A04 aluminum alloy or due to a eutectic compound generated during casting, aluminum alloy structural materials have bad toughness and low strength so that long-time safe and reliable work in bad working environment cannot be realized. The thick plate consists of the following components according to percentage by weight: 1.40-2.00% of Cu, 1.80-2.80% of Mg, 0.20-0.60% of Mn, 0.10-0.25% of Cr, 5.00-6.50% of Zn, 0-0.10% of Si, 0.05-0.25% of Fe, 0-0.05% of Ti, 0-0.10% of Ni, 0.01-0.05% of single impurity, 0.01-0.10% of aggregate impurity and the balance of Al. The preparation method is as follows: fusing and casting a flat aluminum alloy cast ingot; and carrying out homogenizing annealing, ...

Heat conductive magnesium alloy and method for preparing the same