Forming device for high-pressure synthesis cavity of cubic press
By installing a ring-shaped mold and a steel top block in a six-sided top press, high pressure and temperature stability of the six-sided top press are achieved, solving the problems of compression capacity limitation of the six-sided top press and high cost of two-sided top press equipment, and realizing low-cost and high-efficiency synthesis chamber synthesis.
Patent Information
- Application Number
- CN202423294762.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-31
AI Technical Summary
When the ultra-high pressure chamber of the six-sided press applies pressure to the synthetic block, the angle of the six top hammers limits the compression amount, which cannot provide greater effective pressure and restricts the ability to synthesize high-quality large diamond particles over a long period of time. While the two-sided press can provide high pressure, the equipment and molds are expensive and difficult to manufacture, which limits its widespread application.
Design a device for forming a high-pressure synthesis chamber of a six-sided top press. Install the annual ring mold of a two-sided top press into a multi-axis structure of a six-sided top press. Replace the original four top hammers in the non-heating directions with four steel top blocks to fix the annual ring mold and transmit pressure, thereby achieving long-term stability of the temperature and pressure fields.
Combining the ease of operation of a six-sided top press with the high-pressure advantages of a two-sided top press, it achieves stable temperature, high pressure, low cost, and high efficiency in the synthesis chamber, solving the problems of equipment manufacturing difficulty and service life.
Smart Images
Figure CN223717061U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a top pressure machine, specifically to a forming device of high-pressure synthetic cavity of six-surface top pressure machine, belongs to the top pressure machine field. BACKGROUND
[0002] The synthetic large cavity press device of artificial diamond is originated from the high-pressure technology developed by Bridgman in the early 20th century, mainly two-surface top pressure machine and six-surface top pressure machine. The six-surface top pressure machine is divided into hinge type and pull rod type.
[0003] The domestic production of artificial diamond mainly adopts the hinge type six-surface top pressure machine. The super-high pressure die of the hinge type six-surface top pressure machine is a multi-axis structure without pressure cylinder. Six anvils are arranged in the super-high pressure cavity in a perpendicular manner on three-dimensional axes. Two anvils also have the function of electrical heating for the synthetic block cavity. The six anvils are made of hard alloy and have the same shape and size. The lower part of the anvil is a large upper small lower cone, and the upper part is a square hammer surface. Each side of the hammer surface is connected through a sealing surface, a large slope and a cone. The width of the four sealing surfaces on each anvil is equal. Six anvils are installed on the piston. During operation, the piston drives the six anvils to synchronously press the six surfaces of the cubic synthetic block. The compression displacement of the synthetic block is the same. Twelve sealing edges formed by the material flow of the synthetic block and the six surfaces of the anvil form the super-high pressure cavity. The six-surface top pressure machine is the main machine type for synthesizing super-high pressure synthetic materials such as diamond and cubic boron nitride. The six-surface top pressure machine has the advantages of strong centering, low cost, easy operation, low running cost and high efficiency, and is the main equipment for synthesizing diamond, cubic boron nitride (cBN) and other super-hard materials in China.
[0004] However, when the super-high pressure cavity of the six-surface top pressure machine presses the synthetic block, Limited compression of angle limit for six-pointed hammer , the pressure transmission into the cavity is limited, and it cannot provide greater effective pressure when synthesizing high-quality large-grain diamond for a long time.
[0005] Unlike the six-surface top pressure machine, the two-surface top pressure machine forms the long-time high-temperature and super-high pressure synthesis conditions required for diamond growth with the help of a super-high pressure die. The super-high pressure die of the two-surface top pressure machine generally has two forms of annual ring type (Belt type) two-surface top and anvil type two-surface top. The annual ring type (Belt type) die single pressure source two-surface top synthesis equipment is formed by a plurality of annual ring steel hoops surrounding a hard alloy pressure cylinder. Two anvils also have the function of electrical heating. A hard alloy material made inner circular hole type pressure cylinder is arranged in the middle of the die. The upper and lower ends of the pressure cylinder have conical anvils, and the angle can be arbitrarily selected within a certain range according to the needs of use. The selectability of the conical angle is a feature of the two-surface top device, and the appropriate load efficiency and good anvil support can be obtained by selecting the conical angle.
[0006] The two-sided press has the characteristics of high pressure and good stability, and thus becomes the development direction of synthesizing high-quality high-strength diamond. However, compared with the six-sided press, the two-sided press has the problems of high cost of equipment and super-high pressure mold, high difficulty in process control, high difficulty in processing of the press cylinder and high cost, thus limiting the development of the two-sided press. Practical new type content
[0007] The utility model discloses a six-sided press high-pressure synthesis cavity forming device, by installing the annual ring type mold of two-sided press in the multi-shaft structure of six-sided, realize the demand that the temperature field and pressure field of synthesis cavity can keep stable for a long time, have the advantages such as long time, temperature stability of synthesis cavity, low production cost, convenient operation.
[0008] The utility model discloses a six-sided press high-pressure synthesis cavity forming device, the forming device is composed of steel top block, annual ring type mold and top hammer structure;
[0009] The steel top block is arranged on four non-heating direction pistons, replaces the original top hammer, and the number of the steel top block is four.
[0010] The steel top block is used for fixing the annual ring type mold, and simultaneously transmits the top force of four non-heating directions to the annual ring type mold, and protects the hard alloy press cylinder and transmits the pressure.
[0011] The utility model discloses four steel top blocks replace the original four non-heating direction top hammers on the six-sided press, and the steel top block is installed on the four non-heating direction pistons of the six-sided press respectively, and the steel top block plays the role of fixing the annual ring type mold and transmitting the pressure.
[0012] When working, the working cylinder pistons of two directions are separated from the oil circuit of the remaining four pistons, and two oil circuits supply oil respectively to ensure that the deformation of the hard alloy press cylinder is operated in a controllable range.
[0013] The steel top block is composed of an arc surface structure pad and a base, the arc surface structure pad is a cuboid structure, the surface is an arc surface, the arc of the arc surface is consistent with the cylindrical surface of the annual ring type mold, the arc surface structure pad is fixed on the corresponding six-sided press piston, the back surface of the arc surface structure pad is provided with a concave circular connecting port for installing the base, the base is a circular base, the upper portion of the circular base is provided with a circular connecting cap for connecting the arc surface structure pad, and the base is connected with the piston.
[0014] The annual ring type mold is composed of an annual ring shaped outer steel ring, an annual ring shaped inner steel ring and a hard alloy pressure cylinder; the annual ring shaped inner steel ring is clamped on the hard alloy pressure cylinder, and the annual ring shaped outer steel ring is clamped on the annual ring shaped inner steel ring.
[0015] The top hammer structure is composed of a top hammer base, a steel ring sleeve, a cushion block and a heating top hammer, is installed on the heating direction piston, and is provided with two top hammer structures which are respectively installed on two heating direction pistons; the lower part of the top hammer base is a circular table structure, the bottom is large and the upper part is small, and is used for connecting the piston in the heating direction; the upper part of the top hammer base is a cylindrical structure; a plurality of mounting screw holes are arranged on the surface of the upper part of the top hammer base, and the mounting holes are used for mounting adjusting screws; the cushion block is installed on the upper part of the top hammer base, is a circular table, and is used for connecting the heating top hammer; the cushion block is used for transmitting the top force of the piston in the heating direction to the heating top hammer, so that the pressure transmission is realized.
[0016] The steel ring sleeve is a cylindrical structure sleeve, is used for clamping and fixing the heating top hammer, and the inner part of the steel ring sleeve is a circular table structure sleeve hole which is large at the bottom and small at the upper part; the diameter of the upper sleeve pipe opening of the steel ring sleeve is slightly larger than the diameter of the heating top hammer; the diameter of the lower sleeve pipe opening of the steel ring sleeve is slightly larger than the diameter of the upper part of the top hammer base; a plurality of adjusting holes are arranged on the bottom of the steel ring sleeve and are used for mounting adjusting screws; the number of the adjusting holes is consistent with the number of the mounting screw holes on the top hammer base; the steel ring sleeve is installed on the upper part of the top hammer base and is fixed on the mounting screw holes through adjusting screws; the steel ring sleeve is clamped on the heating top hammer and has a height less than the heating top hammer.
[0017] The heating top hammer is a conical structure body, and the upper part is a conical hammer head; the lower part of the top hammer is a cylindrical hammer body, and the heating top hammer is fixed on the top hammer cushion block through the steel ring sleeve.
[0018] After four steel top blocks fix the annual ring type mold, the six-surface top press is started to work, and the pressure on the four non-heating direction pistons, such as the front piston, the rear piston, the left piston and the right piston, is transmitted to the hard alloy pressure cylinder in the annual ring type mold through the steel top blocks; meanwhile, the top force of the upper and lower two heating direction pistons is transmitted to the heating top hammer, and the pressure and heat of the heating top hammer are transmitted to the hard alloy pressure cylinder. In addition, the upper and lower two heating direction pistons and the four non-heating direction pistons, such as the front piston, the rear piston, the left piston and the right piston, can be independently operated, different pressure rising curves are established, and the hard alloy pressure cylinder is used in the best deformation range.
[0019] The beneficial effects of the utility model are as follows:
[0020] (1) through the four steel top block will six top four non-heating direction force effectively transmitted to the annual ring type mold, using the characteristics of six top press to solve the two surface top annual ring type winding cylinder manufacturing difficulty and low service life problem. At the same time, effectively use the characteristics of two surface top press in diamond, cubic boron nitride and other super hard materials and large cavity composite sheet synthesis;
[0021] (2) the perfect combination of the characteristics of long synthesis time, temperature stability, high pressure, low cost, high efficiency, etc.
[0022] The utility model will be further described below in combination with the drawings and examples. DRAWINGS
[0023] Figure 1 It is the side section structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0024] Figure 2 It is the overhead structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0025] Figure 3 It is the steel top pad block structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0026] Figure 4 It is the steel top pad block side structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0027] Figure 5 It is the annual ring type mold structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0028] Figure 6 It is the top hammer structure schematic drawing of the forming device of the high pressure synthesis cavity of the six top press of the utility model embodiment.
[0029] In the drawing: 1 steel top block, 11 arc surface structure pad block, 111 connecting port, 12 base, 121 circular connecting cap, 2 annual ring type mold, 21 annual ring outer steel ring, 22 annual ring inner steel ring, 23 hard alloy cylinder, 3 top hammer structure, 31 top hammer base, 311 mounting screw hole, 32 pad block, 33 steel ring sleeve, 331 adjusting hole, 34 heating top hammer, 35 adjusting screw, 4 non-heating direction piston, 5 heating direction piston. DETAILED DESCRIPTION
[0030] The preferred embodiments of the utility model are described below, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. EMBODIMENT
[0031] As Figures 1-6 shown, a forming device of high-pressure synthesis cavity of a cubic press, the forming device is composed of steel anvil 1, annual ring type mold 2 and anvil structure 3;
[0032] The steel anvil 1 is arranged on four non-heating direction pistons 4, replaces the original anvil, the number of the steel anvil 1 is four; the steel anvil 1 is used for fixing the annual ring type mold 2, and simultaneously four non-heating direction anvil forces are transmitted to the annual ring type mold 2, and the steel anvil 1 plays a role of protecting the hard alloy pressure cylinder 23 and transmitting pressure.
[0033] The utility model discloses four steel anvil 1 replaces the original four non-heating direction anvil of cubic press, and the steel anvil 1 is installed on the four non-heating direction pistons of cubic press respectively, and the steel anvil 1 plays a role of fixing annual ring type mold and transmitting pressure.
[0034] When working, the energized heating two direction working cylinder pistons are separated from the remaining four piston hydraulic system oil paths, and two oil supply oil respectively to ensure that the deformation of the hard alloy pressure cylinder is operated in the controllable range; the heating direction piston satisfies the establishment of synthesis pressure, and the non-heating four direction pistons satisfy the provision of protection pressure for the hard alloy pressure cylinder.
[0035] The steel anvil 1 is composed of cambered surface structure cushion block 11 and base 12;The cambered surface structure cushion block 11 is the cuboid structure, the cambered surface structure cushion block 11 surface is cambered surface, and the camber is matched with the cylindrical surface of annual ring type mold 2, and is used for fixing annual ring type mold 2;The cambered surface structure cushion block 11 back is equipped with inner recessed round connecting port 111, is used for installing base 12.The base 12 is circular base, and the upper portion is equipped with circular connecting cap 121, is used for connecting cambered surface structure cushion block 11, and the base is connected with non-heating direction piston 4.
[0036] The annual ring type mold 2 is composed of annual ring type outer steel ring 21, annual ring type inner steel ring 22 and hard alloy pressure cylinder 23, the annual ring type inner steel ring 22 is clamped on the hard alloy pressure cylinder 23, and the annual ring type outer steel ring 21 is clamped on the annual ring type inner steel ring 22.
[0037] The anvil structure 3 is composed of anvil base 31, cushion block 32, steel ring sleeve 33 and heating anvil 34, and the anvil structure 3 is equipped with 2, and is installed on two heating direction pistons 5 respectively;
[0038] The lower part of the top hammer base 31 is a circular truncated cone structure, with a large bottom and a small top, for connecting the heating direction piston 5. The upper part of the top hammer base 31 is a cylindrical structure. A plurality of mounting screw holes 311 are arranged on the surface of the upper part of the top hammer base 31, and the mounting holes 311 are used for mounting the adjusting screws 35. A cushion block 32 is further mounted on the upper part of the top hammer base 31, and the cushion block 32 is a circular truncated cone structure for connecting the heating top hammer 34. The cushion block 32 is used to transmit the top force of the heating direction piston 5 to the heating top hammer 34, so as to realize the transmission of pressure.
[0039] The steel ring sleeve 33 is a cylindrical sleeve for clamping and fixing the heating top hammer 34. The inside of the steel ring sleeve 33 is a circular truncated cone sleeve with a large bottom and a small top. The diameter of the upper sleeve is slightly larger than the diameter of the heating top hammer 34, and the diameter of the lower sleeve is slightly larger than the diameter of the upper part of the top hammer base 31.
[0040] A plurality of adjusting holes 331 are arranged on the bottom of the steel ring sleeve 33 for mounting the adjusting screws 35. The number of the adjusting holes is consistent with the number of the mounting screw holes 311 on the top hammer base. The steel ring sleeve 33 is mounted on the upper part of the top hammer base 31 through the mounting screw holes 311 fixed by the adjusting screws 35. The steel ring sleeve 33 is clamped on the heating top hammer 34, and the height of the steel ring sleeve 33 is less than that of the heating top hammer 34.
[0041] The heating top hammer 34 is a conical structure, with a conical hammer head on the upper part and a cylindrical hammer body on the lower part. The heating top hammer 34 is fixed on the cushion block 32 of the top hammer base by the steel ring sleeve 33. The heating direction piston 5 is composed of an upper piston and a lower piston.
Claims
1. Apparatus for forming a high-pressure synthesis cavity of a cubic press, characterized in that: The forming device is composed of steel top blocks, annual ring type molds and top hammer structures; the steel top blocks are arranged on four non-heating direction pistons, and the number of the steel top blocks is four; the steel top blocks are used for fixing the annual ring type molds and simultaneously transmitting the top force of the four non-heating directions to the annual ring type molds.
2. The apparatus of claim 1, wherein: The steel top block is composed of an arc surface structure pad and a base; the arc surface structure pad is a cuboid structure; the surface is an arc surface, the arc of the arc surface is consistent with the cylindrical surface of the annual ring type mold, the arc surface structure pad is fixed on the corresponding six-face top pressing machine piston; the back surface of the arc surface structure pad is provided with an inner concave circular connecting port for installing the base; the base is a circular base, the upper portion of the circular base is provided with a circular connecting cap for connecting the arc surface structure pad, and the base is connected with the piston.
3. The apparatus of claim 1, wherein: The annual ring type mold is composed of an annual ring type outer steel ring, an annual ring type inner steel ring and a hard alloy pressure cylinder; the annual ring type inner steel ring is arranged on the hard alloy pressure cylinder, and the annual ring type outer steel ring is arranged on the annual ring type inner steel ring.
4. The apparatus of claim 1, wherein: The top hammer structure is composed of a top hammer base, a steel ring sleeve, a pad and a heating top hammer, and is installed on a heating direction piston; the top hammer structure is provided with two, and is installed on two heating direction pistons respectively; the lower portion of the top hammer base is a circular table structure, the bottom is large and the upper portion is small, and is used for connecting the piston in the heating direction; the upper portion of the top hammer base is a cylindrical structure; the upper surface of the upper portion of the top hammer base is provided with a plurality of mounting screw holes, the mounting screw holes are used for mounting adjusting screws; the pad is installed on the upper portion of the top hammer base, and the pad is a circular table shape and is used for connecting the heating top hammer; the pad is used for transmitting the top force of the piston in the heating direction to the heating top hammer.
5. The apparatus of claim 4, wherein: The steel ring sleeve is a cylindrical structure sleeve and is used for fixing the heating top hammer; the inside of the steel ring sleeve is a circular table structure sleeve hole, the bottom is large and the upper portion is small; the diameter of the upper sleeve pipe port of the steel ring sleeve is slightly larger than the diameter of the heating top hammer; the diameter of the lower sleeve pipe port of the steel ring sleeve is slightly larger than the diameter of the upper portion of the top hammer base; the bottom of the steel ring sleeve is provided with a plurality of adjusting holes for mounting adjusting screws; the number of the adjusting holes is consistent with the number of the mounting screw holes on the top hammer base; the steel ring sleeve is installed on the upper portion of the top hammer base through the adjusting screw fixed mounting screw holes; the steel ring sleeve is clamped on the heating top hammer and the height is less than the heating top hammer.
6. The apparatus of claim 4, wherein: The heating top hammer is a conical structure body, the upper portion is a conical hammer head; the lower portion of the top hammer is a cylindrical hammer body, and the heating top hammer is fixed on the top hammer pad through the steel ring sleeve.