CN-224221287-U - Design device of simple hexahedral top press top hammer preheating block structure

Abstract

The utility model discloses a design device of a simple top hammer preheating block structure of a hexahedral top press, and relates to the technical field of top hammer preheating of the hexahedral top press, comprising a preheating block main body, a heating component, a preheating column and a conductive steel cap; the preheating block main body consists of a pyrophyllite layer and a dolomite layer, the heating component comprises graphite paper, conductive steel caps welded at two ends of the graphite paper and a heating sleeve for wrapping the graphite paper, and the conductive steel caps are combined into a block component in a composite manner and are welded with the graphite paper. The problems that the thermal stress of the top hammer is concentrated and the service life is shortened due to the fact that the short-time rapid temperature rise of the traditional device is achieved, the temperature of a cavity in the initial stage of synthesis is unstable, the crystal growth quality is affected, the efficiency of a traditional preheating mode is low, and additional equipment is needed to support are solved.

Inventors

• HONG FEIFEI
• XU JINGMIAO
• HONG YOUREN
• ZHANG SHOUWEN
• HE TAO

Assignees

• 安徽宏晶新材料股份有限公司

Dates

Publication Date

20260512

Application Date

20250407

Claims (5)

1. 1. A design device of a simple hexahedral top hammer preheating block structure is characterized by comprising a preheating block main body, a heating component, a preheating column (6) and a conductive steel cap (4), wherein the preheating block main body consists of a pyrophyllite layer (1) and a dolomite layer (2), the heating component comprises graphite paper (3), the conductive steel caps (4) welded at two ends of the graphite paper (3) and a heating sleeve (5) wrapping the graphite paper (3), and the conductive steel cap (4) is multiplexed into a block component and is welded with the graphite paper (3).
2. 2. The design device of the simple hexahedral top hammer preheating block structure of the hexahedral top press is characterized in that the dolomite layer (2) is used for preserving heat and blocking high temperature in the synthetic cavity, and the thickness of the dolomite layer is 2mm.
3. 3. The design device of the simple hexahedral top hammer preheating block structure of the press is characterized in that the thickness of the graphite paper (3) is 0.3-0.4mm, and both the heating plates at the two ends and the heating sleeve (5) are made of graphite.
4. 4. The design device of the simple hexahedral top hammer preheating block structure according to claim 1, wherein the preheating column (6) is made of waste materials, and the density is more than or equal to 2.0g/cm < 3 >.
5. 5. The design device of the top hammer preheating block structure of the simple hexahedral press according to claim 1, wherein the total height of the preheating column (6), the conductive steel caps (4) at the two ends and the heating paper sheet is equal to the height of the preheating block.

Description

Design device of simple hexahedral top press top hammer preheating block structure Technical Field The utility model relates to the technical field of preheating of a top hammer of a hexahedral press, in particular to a design device of a simple structure of a top hammer preheating block of the hexahedral press. Background In the process of synthesizing diamond by using a hexahedral top press, the top hammer needs to bear a high-temperature and high-pressure environment, and the service life of the top hammer, the synthesis quality and the synthesis stability of the top hammer are greatly influenced by the temperature of the top hammer. In the prior art, the top hammer is generally heated up from normal temperature to synthesis temperature directly, resulting in the following problems: 1. The temperature is raised too fast, namely the thermal stress of the top hammer is concentrated due to short-time rapid temperature rise, and the service life is shortened; 2. the temperature is uneven, namely the temperature of a cavity is unstable in the initial stage of synthesis, and the growth quality of crystals is affected; 3. The energy consumption is high, the traditional preheating mode has low efficiency and needs additional equipment support. In order to solve the above problems, a design device of a top hammer preheating block structure of a hexahedral top press with simple structure and low cost is needed to realize controllable temperature rise and efficient heat energy utilization. Disclosure of utility model The utility model aims to provide a design device of a simple cubic press top hammer preheating block structure, which aims to solve the problems that the existing device is short-time and rapid in temperature rise, so that the thermal stress of the top hammer is concentrated, the service life is reduced, the temperature of a cavity in an initial synthesis stage is unstable, the crystal growth quality is affected, the efficiency of a traditional preheating mode is low, and additional equipment is required to support. A design device of a simple hexahedral top hammer preheating block structure comprises a preheating block main body, a heating assembly, a preheating column and a conductive steel cap, wherein the preheating block main body consists of a pyrophyllite layer and a dolomite layer, the heating assembly comprises graphite paper, the conductive steel caps welded at two ends of the graphite paper and a heating sleeve for wrapping the graphite paper, and the conductive steel cap is combined into a block assembly and is welded with the graphite paper. Preferably, the dolomite layer is used for keeping and blocking high temperature in the synthesis cavity, and the thickness of the dolomite layer is 2mm. Preferably, the thickness of the graphite paper is 0.3-0.4mm, and the heating plates and the heating sleeves at the two ends are made of graphite. Preferably, the preheating column is made of waste materials, and the density is more than or equal to 2.0g/cm 3. Preferably, the total height of the preheating column, the conductive steel caps at the two ends and the heating paper sheet is equal to the height of the preheating block. Preferably, the heating rate in the preheating process is less than or equal to 2 ℃ per minute, the pressure is 60% of the synthesis pressure, and the total duration is 1-1.5 hours according to the specification of the press. Preferably, the pressing pressure of the preheating column is 100-200T, the baking temperature is 120 ℃, and the baking time is 24 hours. Preferably, the power is raised in stages, namely the initial power is 20% of the synthesized power, the initial power is maintained for 20 minutes, the second stage is raised to 40% and maintained for 20 minutes, and the final stage is raised to 60% and maintained for 20 minutes. The design device for the simple hexahedral press top hammer preheating block structure has the advantages that the preheating time is shortened by 30% through the thin dolomite with the thickness of 2mm, the power requirement is reduced by 20%, the waste recycling is reduced by 40%, the material cost is reduced by 40%, the resistance of graphite paper is controllable, the heating rate is less than or equal to 2 ℃ per minute, the thermal stress damage is avoided, the existing hexahedral press is adapted, and the equipment is not required to be modified. Drawings Fig. 1 is a plan view of an internal structure of a preheating block. Fig. 2 is a top view of the top hammer. Fig. 3 is a side view of the top hammer. Wherein, 1 part of the paraffin layer, 2 parts of the dolomite layer, 3 parts of the graphite paper, 4 parts of the conductive steel cap, 5 parts of the heating sleeve, and 6 parts of the preheating column. Detailed Description The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of