WO2015078210A1 - 非晶合金构件铸造成型设备 - Google Patents

非晶合金构件铸造成型设备 Download PDF

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Publication number
WO2015078210A1
WO2015078210A1 PCT/CN2014/085328 CN2014085328W WO2015078210A1 WO 2015078210 A1 WO2015078210 A1 WO 2015078210A1 CN 2014085328 W CN2014085328 W CN 2014085328W WO 2015078210 A1 WO2015078210 A1 WO 2015078210A1
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WIPO (PCT)
Prior art keywords
vacuum
mold
injection
amorphous alloy
molding apparatus
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PCT/CN2014/085328
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English (en)
French (fr)
Inventor
付华萌
张海峰
王爱民
朱正旺
***
李宏
李扬德
李卫荣
汤铁装
Original Assignee
中国科学院金属研究所
东莞宜安科技股份有限公司
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Application filed by 中国科学院金属研究所, 东莞宜安科技股份有限公司 filed Critical 中国科学院金属研究所
Publication of WO2015078210A1 publication Critical patent/WO2015078210A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/08Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/10Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with horizontal press motion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14Machines with evacuated die cavity

Definitions

  • the utility model relates to the technical field of amorphous alloy molding, in particular to a casting and forming device for amorphous alloy components. Background technique
  • ⁇ -shaped amorphous alloys exhibit a series of excellent physical, chemical and mechanical properties such as high strength, high elasticity, high fracture, and high ratio due to their unique long-range disordered, short-range ordered atomic arrangement.
  • Strength, superplasticity, high corrosion resistance, outstanding magnetic properties, excellent formability, etc. are increasingly used in aerospace, aerospace and civil applications.
  • the most successful performance of amorphous alloy applications is its outstanding soft magnetic properties, which has made amazing progress and great benefits. Small engines and transformers using amorphous alloys as magnetic components have achieved commercial success.
  • amorphous alloys The high elasticity of Zr-based amorphous alloys has been successfully applied as a structural member to the top of golf clubs, sports articles such as tennis rackets, and the excellent formability and superplasticity of amorphous alloys allow it to be used. Prepare tiny, precision devices such as precision micro gears and bearings. In addition, amorphous alloys are often used as coating materials, optical materials, and electrode materials.
  • the mold adds a seal ring, so that there is no vent hole around the cavity during the filling process, so that pores or shrinkage holes are easily formed on the surface of the amorphous alloy member.
  • the vacuum chamber or the protective atmosphere chamber it is necessary for the vacuum chamber or the protective atmosphere chamber to take a vacuum for a period of time, or to charge a gas having a certain pressure, which results in a decrease in the molding efficiency of the amorphous alloy member.
  • the object of the present invention is to provide an amorphous alloy member casting molding apparatus, which can be used for the preparation of an amorphous alloy member, which can effectively improve the forming efficiency and the forming quality of the amorphous alloy member.
  • An amorphous alloy component casting molding apparatus comprising an injection system, an alloy melting system, a raw material feeding system, a mold system, a vacuum system, and a protective atmosphere system, wherein:
  • the alloy smelting system is used for smelting of the alloy, and is disposed in the vacuum chamber, and comprises a melting smelting and heating device, wherein the heating device heats the smelting crucible by using an induction coil or a resistance wire; the heating device is disposed outside the smelting crucible;
  • the injection system includes: a shotgun, an injection mechanism, an injection rod and an injection piston disposed at an end of the injection rod, wherein the injection mechanism controls the movement of the injection piston in the injection cylinder through the injection rod, and the pressure a nozzle is disposed on the barrel, the pressure rod, the pressure tube and the injection piston are disposed in the vacuum chamber, the injection mechanism is disposed outside the vacuum chamber, and a bellows is used between the pressure rod and the vacuum chamber
  • the vacuum sealing is realized, and the probability of air leakage of the dynamic sealing structure is effectively reduced;
  • Raw material feeding system including storage bin, feeding chute and feeding rod, the storage bin is located in the vacuum chamber, and the bottom of the storage bin is provided with a spring piece, so that the alloy material in the storage bin can move upward; the alloy is fed through the feeding rod The material is fed into the melting crucible through the feeding chute; the top of the storage tank is provided with a cover body, and after the alloy material is added, the cover body is fixed on the storage tank (limitation action on the top end of the alloy material), and the storage tank is Corresponding holes are arranged in the upper part of the side wall, and the feeding rod feeds the alloy material into the melting crucible through the hole in the storage tank;
  • Mold system including fixed mold, sealing ring, moving mold, cavity, exhaust passage, constant pressure one-way valve, mold runner and mold clamping mechanism; wherein: mold clamping mechanism is used to control dynamic mold and fixed mold After the opening and closing, the movable mold and the fixed mold are closed, a cavity is formed therein, and the cavity is communicated with the injection cylinder through the mold runner, and the cavity is realized by the exhaust passage to the outside, and the end of the exhaust passage is fixed.
  • One-way valve sealed between the moving mold and the fixed mold through the sealing ring;
  • Vacuum system comprising a vacuum unit and a vacuum tank body, the vacuum unit is connected to the vacuum tank body through a valve II, the vacuum tank body is connected to the vacuum chamber through a pipeline, and the valve connected to the vacuum chamber of the vacuum tank body is provided with a valve III; the atmosphere system is protected:
  • the utility model comprises a protective atmosphere gas cylinder and a gas storage tank connected thereto, wherein the gas storage tank is connected to the vacuum chamber through a pipeline; the protective atmosphere gas cylinder is connected with the gas storage tank with a valve I, and the gas storage tank is connected A valve IV is provided on the pipe of the vacuum chamber.
  • the feed rod feeds the alloy material into the melting crucible, and heats the molten alloy material through the gate into the shot sleeve.
  • the vacuum chamber is provided with an infrared thermometer for measuring the temperature of the alloy liquid in the melting crucible and a camera for monitoring the molten state of the alloy.
  • the casting molding apparatus is further provided with a control panel for opening and closing control of the movable mold and the stationary mold, temperature control of the heating device, and motion control of the plunger.
  • the casting molding apparatus can operate under a vacuum or a positive pressure atmosphere according to actual needs.
  • the protective atmosphere cylinder is filled with an inert gas.
  • the constant pressure one-way valve in the mold system is mounted on a fixed mold and/or a movable mold, and the number of constant pressure one-way valves is one or more, and the number is determined according to the size and shape of the workpiece.
  • the smelting crucible is made of aluminum oxide or boron nitride; or the smelting crucible is a graphite crucible with a ceramic coating.
  • the above-mentioned equipment is used for the amorphous alloy structure forming process, including the following steps:
  • the sealing ring is formed by the sealing ring between the fixed mold and the movable mold, and the exhaust passage is provided with a constant pressure one-way valve, and finally a closed cavity is obtained;
  • the alloy material is melted by a heating device, and the alloy melt is poured into the shotgun through the gate by a turning mechanism, and then the shot rod is passed to the left through the injection piston at a certain speed and loading force to melt the alloy. Squeezed into the cavity, during the process of filling the alloy melt into the cavity, the constant pressure one-way valve is opened, so that the excess gas exhaust passage in the cavity is discharged;
  • the vacuum tank is used to achieve a high vacuum by the vacuum unit, and the IJ omits the corresponding operation in the next process (the next process is to work under vacuum conditions) Or), in the process of alloy melting and filling in the first process, open the valve I, and fill the gas tank with a certain pressure of protective atmosphere, and the shell IJ omits the corresponding operation in the next process (the next process) For working under a positive pressure protection atmosphere).
  • the degree of vacuum is 10 - 2 Pa.
  • the shielding gas pressure is between 1 and 1.5 atmospheres.
  • the device of the utility model can be used for preparing amorphous alloy members, such as: Zr-based amorphous alloy, bismuth-based amorphous alloy, Fe-based amorphous alloy, Ni-based amorphous alloy, A1-based amorphous alloy, Mg-based amorphous alloy Or Cu-based amorphous alloy; can also be used for the preparation of active metals such as Ti alloys, Al alloys and Mg alloy workpieces.
  • amorphous alloy members such as: Zr-based amorphous alloy, bismuth-based amorphous alloy, Fe-based amorphous alloy, Ni-based amorphous alloy, A1-based amorphous alloy, Mg-based amorphous alloy Or Cu-based amorphous alloy.
  • the feed system of the raw material is added to the casting molding apparatus of the present invention, so that the cycle of raw material replenishment is prolonged.
  • Introducing high-vacuum tanks and gas storage tanks in a vacuum or protective atmosphere system When the equipment is demolded and extruded, the vacuum tanks and gas storage tanks can be vacuumed and filled with positive pressure protection. The atmosphere, and then the vacuum of the work or the protective atmosphere of a certain pressure is quickly realized through the valve, which effectively shortens the working cycle of each amorphous member and improves the production efficiency.
  • the device is simple in construction, low in manufacturing and maintenance costs, and enables continuous automated production.
  • the utility model is mainly used for preparing amorphous alloy members, and can realize extrusion molding of amorphous alloy members under vacuum and positive pressure gas protection, and the vacuum or positive pressure protection atmosphere space required for the equipment in the utility model is greatly increased. Decreasing, adding a vent to the mold, effectively solving the formation of small shrinkage cavities in the forming process of the alloy member, and improving the quality of the amorphous alloy member. By using a high vacuum tank or a protective gas tank, the vacuum or positive pressure protective atmosphere during the molding process can be effectively solved, the molding cycle can be shortened, the production cost can be saved, and the production efficiency can be greatly improved.
  • the feed system of raw materials is added to the equipment to extend the period of raw material replenishment.
  • DRAWINGS Figure 1 is a schematic view showing the structure of a casting molding apparatus of the present invention.
  • 1-protected atmosphere gas cylinder 2- gas storage tank; 3-valve I, 5-valve II, 7-valve III, 30-valve IV; 4-vacuum unit; 6-vacuum tank; 8-infrared temperature measurement 9-camera; 10-control panel; 11-fixed mold; 12-cavity; 13-seal; 14-exhaust passage; 15-moving mold; 16-pressure check valve; 17-mold open Mold mechanism; 18-mold runner; 19-shot cylinder; 20-heating device; 21-melting crucible; 22-feed chute; 23-vacuum chamber; 24-feed bar; 25-alloy material; Box; 27-spring piece; 28- bellows; 29-injection mechanism; 31-gate; 32-injection piston; 33-injection rod.
  • the amorphous alloy component casting molding apparatus of the present invention comprises a shot system, an alloy melting system, a raw material feeding system, a mold system, a vacuum system, and a protective atmosphere system, wherein:
  • the alloy smelting system is used for melting the alloy, and is disposed in the vacuum chamber 23, and includes a melting crucible 21 and a heating device 20, wherein the melting crucible 21 is made of aluminum oxide or boron nitride; or, the melting crucible 21 is a belt.
  • the ceramic crucible has a graphite coating; the heating device 20 heats the melting crucible 21 by using an induction coil or a resistance wire; and the heating device 20 is disposed outside the melting crucible 21.
  • the injection system includes a shotgun 19, an injection mechanism 29, a shot rod 33, and a shot piston 32 provided at the end of the shot rod 33.
  • the shot mechanism 29 controls the shot piston 32 through the shot rod 33.
  • the injection cylinder 19 is provided with a gate 31; the injection rod 33, the injection cylinder 19 and the injection piston 32 are disposed in the vacuum chamber 23, and the injection mechanism 29 is provided in In the vacuum chamber 23, the bellows 28 is used between the injection rod 33 and the vacuum chamber 23 to realize vacuum sealing, thereby effectively reducing the probability of air leakage of the dynamic sealing structure;
  • the raw material feeding system comprises a storage bin 26, a feeding chute 22 and a feeding rod 24, the storage bin 26 is located in the vacuum chamber 23, and a spring piece 27 is arranged at the bottom of the storage bin 26, so that the alloy material 25 in the storage bin 26
  • the alloy material 25 can be fed into the melting crucible 21 through the feed chute 22 through the feed rod 24, and the heated molten alloy material 25 enters the shot sleeve 19 through the gate 31.
  • the top of the storage box 26 is provided with a cover body. After the alloy material is added, the cover body is fixed on the storage box 26 (the upper end of the alloy material is restricted), and the corresponding upper hole is disposed on the upper side wall of the storage box 26.
  • the feed rod 24 feeds the alloy material into the melting crucible 21 through a hole in the storage tank 26;
  • Mold system including fixed mold 11, sealing ring 13, moving mold 15, cavity 12, exhaust passage 14, constant pressure a one-way valve 16, a mold runner 18 and a mold clamping mechanism 17; wherein: the constant pressure one-way valve 16 is mounted on the fixed mold 11 and/or the movable mold 15, and the number of the constant pressure one-way valves 16 is one Or a plurality, the number is determined according to the size and shape of the workpiece; the mold clamping mechanism 17 is for controlling the opening and closing of the movable mold 15 and the fixed mold 11, and after the movable mold 15 and the fixed mold 11 are closed, the cavity 12 is formed therein.
  • the cavity 12 is realized by the mold runner 18 and the injection cylinder 19, and the cavity 12 is realized by the exhaust passage 14 to the outside.
  • the end of the exhaust passage 14 is provided with a constant pressure one-way valve 16, a movable mold 15 and a fixed mold. 11 is sealed by a sealing ring 13;
  • the vacuum system comprises a vacuum unit 4 and a vacuum tank body 6.
  • the vacuum unit 4 is connected to the vacuum tank body 6 through a valve II 5, and the vacuum tank body 6 is connected to the vacuum chamber 23 through a pipe, and the vacuum tank body 6 is connected to the pipe of the vacuum chamber 23.
  • Protective atmosphere system Includes protective atmosphere cylinder 1 and its associated gas storage tank 2, protective atmosphere Gas cylinder 1 contains inert gas.
  • the gas storage tank 2 is connected to the vacuum chamber 23 through a pipeline; the pipeline connecting the protective atmosphere gas cylinder 1 and the gas storage tank 2 is provided with a valve I 3 , and the pipeline connecting the vacuum chamber 23 of the gas storage tank 2 is provided with a valve IV30 .
  • the vacuum chamber 23 is provided with an infrared thermometer 8 for measuring the temperature of the alloy liquid in the melting crucible 21 and a camera 9 for monitoring the molten state of the alloy.
  • the casting molding apparatus is further provided with a control panel 10 for controlling opening and closing of the movable mold 15 and the stationary mold 11, temperature control of the heating device 20, and motion control of the injection rod 33.
  • the casting molding apparatus can operate under a vacuum or a positive pressure atmosphere according to actual needs.
  • the above equipment is used for the casting process of the amorphous alloy member, including the following steps:
  • the valve 13 When it is required to work under a positive pressure protection atmosphere, the valve 13 is opened, and the gas storage tank 2 is filled with a protective atmosphere of a certain pressure, and then The valve IV30 is opened, so that the protective atmosphere of the required pressure is obtained in the vacuum chamber 23, the cavity 12, the injection cylinder 19 and the storage tank 26, and the pressure is set by the constant pressure one-way valve 16; (4)
  • the alloy material 25 is melted by the heating device 20, and the alloy melt is poured into the shot tube 19 through the gate 31 by means of a turning mechanism, and then the shot rod 33 is injected to the left at a certain speed and loading force.
  • the piston 32 extrudes the alloy melt into the cavity 12, and during the process of filling the alloy melt into the fiber chamber 12, the constant pressure one-way valve 16 is opened, so that the excess gas exhaust passage 14 in the cavity 12 is discharged;
  • the gas is filled with a gas that is balanced with the external pressure through the inflation pipe (when the positive pressure protection atmosphere is used, the aeration process can be omitted), and the cavity is opened.
  • the casting process of the entire workpiece is completed;
  • the vacuum tank 4 realizes high vacuum through the vacuum unit 4, and the IJ omits the corresponding operation in the next process (the next process is in the vacuum condition)
  • the valve I 3 is opened, and the gas tank is filled with a certain pressure of protective atmosphere, and the IJ omits the corresponding operation in the next process ( The next process is when working under a positive pressure protection atmosphere).
  • the degree of vacuum is 10 - 2 Pa.
  • the shielding gas pressure is between 1 and 1.5 atmospheres.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

一种非晶合金构件铸造成型设备。该设备包括压射***、合金熔炼***、原材料进给***、模具***、真空***和保护气氛***,该设备用于非晶合金构件的制备,可以实现在真空和正压气体保护下进行非晶合金构件挤铸成型,该设备在模具上添加排气口,解决合金构件成型过程中表面微小缩孔的形成,提高非晶合金构件质量。通过使用高真空罐或者保护气体罐,解决成型过程中真空或者正压保护气氛的获取时间,缩短成型周期,节约生产成本,提高生产效率。

Description

非晶合金构件铸造成型设备 技术领域
本实用新型涉及非晶合金成型技术领域, 具体涉及一种非晶合金构件铸造成 型设备。 背景技术
±夬状非晶合金由于其具有独特的长程无序、 短程有序的原子排列结构, 表现 出一系列优异的物理、 化学和力学性能, 如高强度、 高弹性、 高断裂顿性、 高比 强度、 超塑性、 高耐蚀性、 突出的磁特性、 优良的成型性等, 从而越来越被广泛 的应用在航空、 航天以及民用领域。 目前, 非晶合金应用最为成功的性能是其突 出的软磁特性, 这方面取得了惊人的进歩和极大的效益。 以非晶合金作为磁性部 件的小型发动机以及变压器在商业上已经取得初歩的成功。 Zr基非晶合金所具有 的高弹性, 使得其被作为结构件成功应用到了高尔夫球杆的顶端, 网球拍等体育 用品之上, 非晶合金优异的成型性及超塑性使得它可以被用来制备微小、 精密的 器件, 例如精密微型齿轮和轴承。 另外, 非晶合金还往往被用作涂层材料、 光学 材料和电极材料。
随着大块非晶应用的日益广泛, 非晶合金的加工和成型工艺也逐渐的受到了 广泛的关注, 从而为非晶合金进一歩发展铺平了道路。 例如非晶合金的悍接、 切 削、 精密铸造等等。 在铸造技术中, 当每次成型的所有动作完成后, 要实现原材 料的进给, 必然要破坏主腔室的真空, 或者造成气体的大量浪费, 这样会导致非 晶合金工件每次工作周期的延长和生产效率的降低。 此外, 模具为了实现真空条 件下的成型, 添加了密封圈, 因而导致在充型过程中, 模腔周围没有排气孔, 使 得在非晶合金构件的表面容易形成气孔或者缩孔。 此外, 已报道的技术中, 其真 空腔室或者保护气氛腔室都需要一段时间进行抽取真空, 或者充入具有一定压力 的气体, 这些都导致非晶合金构件成型效率降低。 实用新型内容
本实用新型的目的在于提供一种非晶合金构件铸造成型设备, 采用该铸造成 型设备进行非晶合金构件的制备, 能够有效提高非晶合金构件的成型效率和成成 型质量。
为实现上述目的, 本实用新型的技术方案是:
一种非晶合金构件铸造成型设备, 包括压射***、 合金熔炼***、 原材料进 给***、 模具***、 真空***和及保护气氛***, 其中:
合金熔炼***:用于合金的熔炼,设于真空室中,包括熔炼坩埚和加热装置, 所述加热装置采用感应线圈或者电阻丝对熔炼坩埚加热; 所述加热装置设于熔炼 坩埚外;
压射***: 包括压射筒、 压射机构、 压射杆和设于压射杆末端的压射活塞, 所述压射机构通过压射杆控制压射活塞在压射筒内的运动, 压射筒上设有浇口 ·, 所述压射杆、 压射筒和压射活塞设于真空室内, 所述压射机构设于真空室外, 所 述压射杆与真空室之间采用波纹管实现真空密封, 有效降低动态密封结构的漏气 概率;
原材料进给***: 包括储料箱、 送料滑道和送料杆, 储料箱位于真空室中, 储料箱底部设有弹簧片, 使得储料箱内合金料能够向上移动; 通过送料杆将合金 料经过送料滑道送入熔炼坩埚中; 所述储料箱顶部设置盖体, 加入合金料后, 盖 体固定在储料箱上(对合金料顶端起到限位作用),储料箱的侧壁上部设置相对应 的孔, 送料杆通过储料箱上的孔将合金料送入熔炼坩埚中;
模具***: 包括定模、 密封圈、 动模、 模腔、 排气通道、 定压单向阀门、 模 具浇道和合模开模机构; 其中: 合模开模机构用于控制动模和定模的开合, 动模 和定模闭合后, 其内形成模腔, 模腔通过模具浇道与压射筒实现连通, 模腔通过 排气通道实现与外界 ¾ , 排气通道末端设有定压单向阀门, 动模和定模之间通 过密封圈实现密封;
真空***: 包括真空机组和真空罐体, 真空机组通过阀门 II连接真空罐体, 真空罐体通过管道连接真空室, 所述真空罐体连接真空室的管道上设有阀门 III; 保护气氛***: 包括保护气氛气瓶以及与之相连接的储气罐, 储气罐再通过 管道连接到真空室; 所述保护气氛气瓶与储气罐相连接的管道上设有阀门 I, 储 气罐连接真空室的管道上设有阀门 IV。 所述送料杆将合金料送入熔炼坩埚中, 加热熔化后的合金料通过浇口进入压 射筒内。
所述真空室上设有用于测量熔炼坩埚中合金液温度的红外测温仪以及监控合 金熔化状态的摄像头。
所述铸造成型设备还设有控制面板, 用于对动模和定模的开合控制、 加热装 置的温度控制和压射杆的运动控制。
所述铸造成型设备能够根据实际需求在真空或者正压气氛下进行工作。
所述保护气氛气瓶内装有惰性气体。
所述模具***中的定压单向阀门安装在在定模和 /或动模上,定压单向阀门的 数量为一个或多个, 数目根据工件的尺寸和形状进行确定。
所述熔炼坩埚为三氧化二铝材质或氮化硼材质; 或者, 熔炼坩埚为带有陶瓷 涂层的石墨坩埚。
禾拥上述设备进行非晶合金构體造成型工艺, 包括以下歩骤:
( 1 )定模和动模之间依靠密封圈形成密封连接,排气通道装有定压单向阀门, 最终获得密闭的模腔;
(2)将装满合金料的储料箱装入真空室,通过储料箱底部的弹簧片将合金料 向上推移, 送料杆向左移动, 将合金料经过送料滑道送入熔炼坩埚;
(3)打开阀门 II, 通过真空机组使得真空罐实现真空, 当模具实现密封后, 打开阀门 III, 使得模腔、 压射筒和储料箱内都获得所需真空度; 当需要在真空条 件下进行工作时, 直接进行歩骤, 当需要在正压保护气氛下进行工作时, 打开阀 门 I, 向储气罐内充入一定压力的保护气氛, 然后打开阀门 IV, 使得真空室、 模 腔、 压射筒和储料箱内都获得所需压力的保护气氛, 压力通过定压单向阀门进行 设置;
(4)通过加热装置将合金料熔化,禾 U用翻转机构将合金熔体通过浇口倒入压 射筒内, 随后压射杆以一定速度和加载力向左通过压射活塞将合金熔体挤入模腔 中, 在合金熔体充樹莫腔的过程中, 定压单向阀门打开, 使得模腔中多余的气体 排气通道排出;
(5)合金熔体在模腔中充型完毕冷却后,通过充气管道充入与外界压力平衡 的气体(当使用正压保护气氛条件下工作时, 可以省略充气过程), 打开模腔, 整 个工件的铸造成型流程完毕; (6)重新开始下一个流程。
上述铸造成型工艺中, 在第一个流程中合金熔化和充型的过程中, 通过真空 机组使得真空罐实现高真空, 贝 IJ在下一个流程中省略相应操作(下一流程为在真 空条件下工作时);或者,在第一个流程中合金熔化和充型的过程中,打开阀门 I, 向储气罐内充入一定压力的保护气氛, 贝 IJ在下一个流程中省略相应操作(下一流 程为在正压保护气氛下工作时)。
上述铸造成型工艺中, 在真空下进行工作的时候, 真空度为 10- 2Pa。
上述铸造成型工艺中, 在具有正压保护气氛条件下工作的时候, 保护气体压 力介于 1-1.5个大气压之间。
本实用新型设备可用于非晶合金构件的制备, 如: Zr基非晶合金、 Ί 基非晶 合金、 Fe基非晶合金、 Ni基非晶合金、 A1基非晶合金、 Mg基非晶合金或 Cu基 非晶合金; 也可用于活性金属如 Ti合金、 A1合金和 Mg合金工件的制备。
本实用新型原理如下:
本发明铸造成型设备上添加了原料的进给***,使得原材料补给的周期延长。 在真空或者保护气氛***中引入高真空罐和储气罐, 当设备在熔炼和挤铸脱模、 装模的时候, 可以预先对真空罐和储气罐进行抽取真空和充入正压的保护气氛, 随后通过阀门很快的实现工作的真空度或者一定压力的保护气氛, 这些都有效的 缩短了每次非晶构件的工作周期, 提高了生产效率。 此外, 该设备结构简单, 制 造和维护成本很低, 能够实现连续自动化生产。
本实用新型主要用于非晶合金构件的制备, 可以实现在真空和正压气体保护 下进行非晶合金构件挤铸成型, 本实用新型中的设备需要实现的真空或者正压保 护气氛空间大幅度减小, 在模具上添加排气口, 有效解决合金构件成型过程中表 面微小缩孔的形成,提高非晶合金构件质量。通过使用高真空罐或者保护气体罐, 有效解决成型过程中真空或者正压保护气氛的获得, 缩短成型周期, 节约生产成 本, 极大提高生产效率。
本实用新型具有以下优点:
1、 在设备上添加了原料的进给***, 使得原材料补给的周期延长。
2、 有效的缩短了每次非晶构件的工作周期, 提高了生产效率。 附图说明 图 1为本实用新型铸造成型设备结构示意图。
其中: 1-保护气氛气瓶; 2-储气罐; 3-阀门 I、 5-阀门 II、 7-阀门 III、 30-阀门 IV; 4-真空机组; 6-真空罐; 8-红外测温仪; 9-摄像头; 10-控制面板; 11-定模; 12-模腔; 13-密封圈; 14-排气通道; 15-动模; 16-定压单向阀门; 17-合模开模机 构; 18-模具浇道; 19-压射筒; 20-加热装置; 21-熔炼坩埚; 22-送料滑道; 23-真 空室; 24-送料杆; 25-合金料; 26-储料箱; 27-弹簧片; 28-波纹管; 29-压射机构; 31-浇口; 32-压射活塞; 33-压射杆。 具体实施方式
以下结合附图对本实用新型进行详细描述, 但是应当理解本实用新型的保护 范围并不受具体实施方式的限制。
如图 1所示, 本实用新型非晶合金构件铸造成型设备包括压射***、 合金熔 炼***、 原材料进给***、 模具***、 真空***和及保护气氛***, 其中:
合金熔炼***: 用于合金的熔炼, 设于真空室 23中, 包括熔炼坩埚 21和加 热装置 20, 所述熔炼坩埚 21为三氧化二铝材质或氮化硼材质; 或者, 熔炼坩埚 21为带有陶瓷涂层的石墨坩埚; 所述加热装置 20采用感应线圈或者电阻丝对熔 炼坩埚 21加热; 所述加热装置 20设于熔炼坩埚 21外。
压射***:包括压射筒 19、压射机构 29、压射杆 33和设于压射杆 33末端的 压射活塞 32,所述压射机构 29通过压射杆 33控制压射活塞 32在压射筒 19内的 运动, 压射筒 19上设有浇口 31; 所述压射杆 33、 压射筒 19和压射活塞 32设于 真空室 23内, 所述压射机构 29设于真空室 23夕卜, 所述压射杆 33与真空室 23 之间采用波纹管 28实现真空密封, 有效降低动态密封结构的漏气概率;
原材料进给***:包括储料箱 26、送料滑道 22和送料杆 24,储料箱 26位于 真空室 23中,储料箱 26底部设有弹簧片 27, 使得储料箱 26内合金料 25能够向 上移动; 通过送料杆 24将合金料 25经过送料滑道 22送入熔炼坩埚 21中, 加热 熔化后的合金料 25通过浇口 31进入压射筒 19内。所述储料箱 26顶部设置盖体, 加入合金料后, 盖体固定在储料箱 26上(对合金料顶端起到限位作用), 储料箱 26的侧壁上部设置相对应的孔,送料杆 24通过储料箱 26上的孔将合金料送入熔 炼坩埚 21中;
模具***: 包括定模 11、 密封圈 13、 动模 15、 模腔 12、 排气通道 14、 定压 单向阀门 16、模具浇道 18和合模开模机构 17;其中:所述定压单向阀门 16安装 在在定模 11和 /或动模 15上, 定压单向阀门 16的数量为一个或多个, 数目根据 工件的尺寸和形状进行确定;合模开模机构 17用于控制动模 15和定模 11的开合, 动模 15和定模 11闭合后, 其内形成模腔 12, 模腔 12通过模具浇道 18与压射筒 19实现 ¾ , 模腔 12通过排气通道 14实现与外界 ¾ , 排气通道 14末端设有 定压单向阀门 16, 动模 15和定模 11之间通过密封圈 13实现密封;
真空***:包括真空机组 4和真空罐体 6,真空机组 4通过阀门 II 5连接真空 罐体 6,真空罐体 6通过管道连接真空室 23,所述真空罐体 6连接真空室 23的管 道上设有阀门 ΠΙ7;
保护气氛***: 包括保护气氛气瓶 1以及与之相连接的储气罐 2, 保护气氛 气瓶 1内装有惰性气体。储气罐 2通过管道连接到真空室 23; 所述保护气氛气瓶 1与储气罐 2相连接的管道上设有阀门 I 3, 储气罐 2连接真空室 23的管道上设 有阀门 IV30。
所述真空室 23上设有用于测量熔炼坩埚 21中合金液温度的红外测温仪 8以 及监控合金熔化状态的摄像头 9。
所述铸造成型设备还设有控制面板 10,用于对动模 15和定模 11的开合控制、 加热装置 20的温度控制和压射杆 33的运动控制。
所述铸造成型设备能够根据实际需求在真空或者正压气氛下进行工作。
禾拥上述设备进行非晶合金构件铸造成型工艺, 包括以下歩骤:
(1 )定模 11和动模 15之间依靠密封圈 13形成密封连接,排气通道 14装有 定压单向阀门 16, 最终获得密闭的模腔 12;
(2)将装满合金料 25的储料箱 26装入真空室 23,通过储料箱 26底部的弹 簧片 27将合金料 25向上推移, 送料杆 24向左移动, 将合金料 25经过送料滑道 22送入熔炼坩埚 21;
(3)打开阀门 115, 通过真空机组 4使得真空罐 6实现真空, 当模具实现密 封后, 打开阀门 ΠΙ7, 使得模腔 12、压射筒 19和储料箱 26内都获得所需真空度; 当需要在真空条件下进行工作时, 直接进行歩骤(4), 当需要在正压保护气氛下 进行工作时,打开阀门 1 3, 向储气罐 2内充入一定压力的保护气氛,然后打开阀 门 IV30,使得真空室 23、模腔 12、压射筒 19和储料箱 26内都获得所需压力的保 护气氛, 压力通过定压单向阀门 16进行设置; (4)通过加热装置 20将合金料 25熔化,禾 1J用翻转机构将合金熔体通过浇口 31倒入压射筒 19内, 随后压射杆 33以一定速度和加载力向左通过压射活塞 32 将合金熔体挤入模腔 12中,在合金熔体充±纖腔 12的过程中, 定压单向阀门 16 打开, 使得模腔 12中多余的气体排气通道 14排出;
(5)合金熔体在模腔 12中充型完毕冷却后, 通过充气管道充入与外界压力 平衡的气体(当使用正压保护气氛 牛下工作时,可以省略充气过程),打开模腔, 整个工件的铸造成型流程完毕;
(6)重新开始下一个流程。
上述铸造成型工艺中, 在第一个流程中合金熔化和充型的过程中, 通过真空 机组 4使得真空罐 ό实现高真空, 贝 IJ在下一个流程中省略相应操作(下一流程为 在真空条件下工作时);或者,在第一个流程中合金熔化和充型的过程中,打开阀 门 I 3,向储气罐内充入一定压力的保护气氛,贝 IJ在下一个流程中省略相应操作 (下 一流程为在正压保护气氛下工作时)。
上述铸造成型工艺中, 在真空下进行工作的时候, 真空度为 10— 2Pa。
上述铸造成型工艺中, 在具有正压保护气氛条件下工作的时候, 保护气体压 力介于 1-1.5个大气压之间。

Claims

权 利 要 求 书
1、一种非晶合金构件铸造成型设备,其特征在于:该铸造成型设备包括压射 ***、合金熔炼***、原材料进给***、模具***、真空***和及保护气氛***, 其中:
合金熔炼***: 用于合金的熔炼, 设于真空室(23)中, 包括熔炼坩埚 (21) 和加热装置(20),所述加热装置 (20)采用感应线圈或者电阻丝对熔炼坩埚 (21) 加热; 所述加热装置(20)设于熔炼坩埚 (21)夕卜;
压射***: 包括压射筒(19)、 压射机构(29)、 压射杆 (33)和设于压射杆 (33)末端的压射活塞(32), 所述压射机构 (29)通过压射杆 (33)控制压射活 塞(32)在压射筒 (19) 内的运动, 压射筒 (19)上设有浇口 (31); 所述压射杆 (33)、压射筒 (19)和压射活塞 (32)设于真空室(23)内, 所述压射机构 (29) 设于真空室(23)夕卜, 所述压射杆 (33)与真空室(23)之间采用波纹管 (28) 实现真空密封;
原材料进给***: 包括储料箱(26)、 送料滑道 (22)和送料杆(24), 储料 箱(26)位于真空室(23)中, 储料箱 (26)底部设有弹簧片(27), 使得储料箱
(26) 内合金料 (25) 能够向上移动; 1送料杆 (24)将合金料 (25)经过送 料滑道 (22)送入熔炼坩埚 (21) 中;
模具***: 包括定模(11)、 密封圈 (13)、 动模(15)、 模腔(12)、 排气通 道(14)、 定压单向阀门(16)、模具烧道 (18)和合模开模机构 (17); 其中: 合 模开模机构 (17)用于控制动模 (15)和定模 (11) 的开合, 动模 (15)和定模
(11)闭合后,其内形成模腔(12),模腔 (12)通过模具浇道 (18)与压射筒 (19) 实现画, 模腔 (12)通过排气通道 (14)实现与外界画, 排气通道(14)末 端设有定压单向阀门(16), 动模 (15)和定模 (11)之间通过密封圈(13)实现 密封;
真空***: 包括真空机组(4)和真空罐体(6), 真空机组(4)通过阀门 II (5)连接真空罐体(6), 真空罐体 (6)通过管道连接真空室(23), 所述真空罐 体(6)连接真空室(23) 的管道上设有阀门 III (7);
保护气氛***: 包括保护气氛气瓶 (1)以及与之相连接的储气罐(2), 储气 罐(2)再通过管道连接到真空室(23); 所述保护气氛气瓶 (1)与储气罐(2) 相连接的管道上设有阀门 I (3), 储气罐(2)连接真空室(23)的管道上设有阀 门 IV (30)。
2、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述送 料杆 (24)将合金料 (25)送入熔炼坩埚 (21) 中, 加热熔化后的合金料 (25) 通过浇口 (31)进入压射筒 (19) 内。
3、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述真 空室(23)上设有用于测量熔炼坩埚 (21)中合金液温度的红外测温仪 (8) 以及 监控合金熔化状态的摄像头(9)。
4、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述铸 造成型设备还设有控制面板(10), 用于对动模 (15)和定模 (11) 的开合控制、 加热装置(20) 的温度控制和压射杆 (33) 的运动控制。
5、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述铸 造成型设备能够根据实际需求在真空或者正压气氛下进行工作。
6、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述保 护气氛气瓶 (1) 内装有惰性气体。
7、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述模 具***中的定压单向阀门 (16)安装在在定模 (11)和 /或动模 (15)上, 定压单 向阀门 (16) 的数量为一个或多个, 数目根据工件的尺寸和形状进行确定。
8、根据权利要求 1所述的非晶合金构件铸造成型设备,其特征在于:所述熔 炼坩埚 (21)为三氧化二铝材质或氮化硼材质; 或者, 熔炼坩埚 (21)为带有陶 瓷涂层的石墨坩埚。
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