CN201135879Y

CN201135879Y - Composite block module for increasing the yield of the composite diamond

Info

Publication number: CN201135879Y
Application number: CNU2007200648185U
Authority: CN
Inventors: 彭国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-23
Filing date: 2007-10-23
Publication date: 2008-10-22
Anticipated expiration: 2017-10-23

Abstract

The utility model relates to a synthetic block component which is used for improving the obtaining rate of the synthetic diamond. The heating piece in the synthetic block component of the prior synthetic diamond is changed into a heating ring, and insulation material is inlaid inside and outside the heating ring, and the insulation material is dolomite; the diameter of the heating ring is two thirds to three fourths of the diameter of a synthetic bar, and the width of the heating ring is two to five millimeters. The synthetic block component has the advantages that the structure is simple and reasonable, the operation is convenient, the energy use rate is high, the obtaining rate and the quality grade of the synthetic diamond can be efficiently improved, and the industrialized production can be realized, thus the synthetic block component can be used together with the manufacturing process of the prior synthetic diamond, and is suitable to be used as the updated product of the synthetic block component of the prior artificial synthetic diamond.

Description

A kind of synthetic block assembly that improves the diamond synthesis yield

Technical field

The utility model relates to the diamond synthesis technical field, is meant a kind of synthetic block assembly that improves the diamond synthesis yield especially.

Background technology

Synthetic block assembly is a critical component of static pressure diamond synthesis, traditional synthetic block assembly structure as shown in Figure 1, it by leaf paraffin mass 1, conducting steel ring 2, metallic conduction sheet 3, periphery be inlaid with the heating sheet 4 of dolomite, the dolomite cover 5 that is embedded with metallic sheath is formed; To be inlaid in by the synthetic rod that graphite and catalyst are formed in the dolomite cover 5, two ends are installed heating sheet 4, metallic conduction sheet 3, conducting steel ring 2 successively, then, integral body places leaf paraffin mass 1 heat-insulation pressure keeping certain hour and diamond synthesis under 1300 celsius temperatures, 90--100GPa super-pressure; The synthetic block assembly of this structure, because heating sheet (conductor) area at white clouds stone ring center is bigger, therefore, under the situation of rated current, its current density is smaller, unit are, the heat that produces in unit interval is less, and the heat of its generation is from being arranged at the heating sheet center at synthetic rod two ends, transmit to the synthetic rod center from the synthetic rod two ends with hemispherical ripple shape, reach the temperature that synthesis technique requires until the temperature that makes whole synthetic rod, but because heat is to transmit to the synthetic rod center with hemispherical ripple shape, therefore, at certain heat-insulation pressure keeping in the time, diametric(al) in synthetic rod axial centre position then can produce the negative thermograde by center to synthetic rod surface, that is to say the central temperature height, surface temperature is low, shown in dash area among Fig. 2; Like this, just cause radial direction diamond synthesis productive rate, the grade of synthetic rod axial centre to descend significantly, influence the yield and the economic benefit of whole diamond synthesizing technology; Though can be by prolonging the heat-insulation pressure keeping time, make the synthetic rod bulk temperature reach the temperature of technological requirement, but bring like this unfavorable be conspicuous, on the one hand, prolongation along with the heat-insulation pressure keeping time, the temperature at synthetic rod two ends and center will substantially exceed the temperature of technological requirement, and the yield of diamond synthesis is lowered; On the other hand, along with the prolongation of heat-insulation pressure keeping time, increase is at double incited somebody to action in the consumption of electric energy, will improve the cost of diamond synthesis undoubtedly, wastes energy.Therefore, the synthetic block assembly structure of existing diamond synthesis is necessary to improve.

The utility model content

The purpose of this utility model be to overcome the deficiency of prior art and provide a kind of simple and reasonable, capacity usage ratio is high, the synthetic block assembly of diamond synthesis yield height, improved diamond synthesis yield that grade is high.

The utility model is to adopt following proposal to realize: will have that the heating sheet changes the heating ring in the synthetic block assembly of diamond synthesis now, and all be inlaid with insulating materials in the ring of described heating ring and outside the ring; Described insulating materials is a dolomite; The heating ring diameter is the 2/3-3/4 of synthetic rod diameter; The width of heating ring is 2-5mm.

The utility model is owing to adopt said structure, on the one hand, dwindled the area of heating sheet, thereby, under the situation of rated current, effectively improve the caloric value in its current density and unit are, unit interval, therefore, adopt the synthetic block assembly of diamond synthesis of the present utility model, can reduce resultant current, improve energy utilization ratio, energy savings, its resultant current is original 60--65%; On the other hand, adopt heating ring structure of the present utility model, can effectively improve electric current and the heat transmission form in synthetic rod, the mode of its transmission is that the ring week of encircling with heating is the center, from the two ends of synthetic rod, transmit to the synthetic rod center with hemispherical ripple shape, reach the temperature that synthesis technique requires until the temperature that makes whole synthetic rod, like this, just improved the situation of transmitting by in the mind-set synthetic rod in the single heating sheet, effectively improve the uniformity of synthetic rod bulk temperature, see shown in Figure 3; Thereby the diametric(al) that has overcome synthetic rod axial centre position forms the problem of negative thermograde, make the more original technology of yield of diamond synthesis improve more than 15%, and the more original technology of the yield of high grade diamond improves more than 5%; In sum; The utility model is simple and reasonable, easy to operate, the capacity usage ratio height, can effectively improve diamond synthesis yield, grade, can realize suitability for industrialized production, can in the supporting use of existing diamond synthesis production technology, be suitable for renewal product as the synthetic block assembly of existing artificially synthesizing diamond.

Description of drawings

Fig. 1 is the synthetic block assembly structural representation of existing diamond synthesis.

Fig. 2 transmits schematic diagram for the heat of existing diamond synthesis.

Fig. 3 is that the heat of the utility model diamond synthesis transmits schematic diagram.

Fig. 4 is the synthetic block assembly structural representation of the utility model diamond synthesis.

Among Fig. 4: 1---leaf paraffin mass, 2---conducting steel ring, 3---metallic conduction sheet, 6---heating ring, 5---are embedded with the dolomite cover of metallic sheath.

The specific embodiment

Referring to Fig. 4, the utility model---a kind of synthetic block assembly that improves the diamond synthesis yield, the dolomite cover 5 that comprises leaf paraffin mass 1, conducting steel ring 2, metallic conduction sheet 3, generates heat and encircle 6, be embedded with metallic sheath, described leaf paraffin mass 1, conducting steel ring 2, metallic conduction sheet 3, structure and the mounting means of dolomite cover 5 that is embedded with metallic sheath are same as the prior art, and its improvement is: all be inlaid with insulating materials in the ring of heating ring 6 and outside the ring; Described insulating materials is a dolomite; The heating ring diameter is the 2/3-3/4 of synthetic rod diameter; The width of heating ring is 2-5mm.During use, to be inlaid in by the synthetic rod that graphite and catalyst are formed in the dolomite cover 5, two ends are installed heating ring 5, metallic conduction sheet 3, conducting steel ring 2 successively, and then, integral body places leaf paraffin mass 1 heat-insulation pressure keeping certain hour and diamond synthesis under 1300 celsius temperatures, 6GPa super-pressure; Use of the present utility model---a kind of synthetic block assembly that improves the diamond synthesis yield, when diamond synthesis, can reduce resultant current 35--40%, and the diamond yield improves more than 15%, particularly the high grade diamond yield improves more than 5%.

Claims

1, a kind of synthetic block assembly that improves the diamond synthesis yield, comprise leaf paraffin mass (1), conducting steel ring (2), metallic conduction sheet (3), heating ring (6), be embedded with the dolomite cover (5) of metallic sheath, it is characterized in that: in the ring of heating ring (6) and the outer insulating materials that all is inlaid with of ring.

2, a kind of synthetic block assembly that improves the diamond synthesis yield according to claim 1, it is characterized in that: described insulating materials is a dolomite.

3, a kind of synthetic block assembly that improves the diamond synthesis yield according to claim 1 is characterized in that: the heating ring diameter is the 2/3-3/4 of synthetic rod diameter.

4, a kind of synthetic block assembly that improves the diamond synthesis yield according to claim 1 is characterized in that: the width of heating ring is 2-5mm.