CN205326393U - Novel boracic diamond compact piece of interface growth type - Google Patents

Novel boracic diamond compact piece of interface growth type Download PDF

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Publication number
CN205326393U
CN205326393U CN201620045447.5U CN201620045447U CN205326393U CN 205326393 U CN205326393 U CN 205326393U CN 201620045447 U CN201620045447 U CN 201620045447U CN 205326393 U CN205326393 U CN 205326393U
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China
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diamond layer
diamond
interface
cemented carbide
carbide substrate
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CN201620045447.5U
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Chinese (zh)
Inventor
邢英
王平
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Sanhe Jingri Diamond Composite Material Co Ltd
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Sanhe Jingri Diamond Composite Material Co Ltd
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Abstract

The utility model provides a concentric annular protruding structural design that novel boracic diamond compact piece of interface growth type comprises diamond layer, cemented carbide substrate, and its cemented carbide substrate adopts interface to be the unequality cemented carbide substrate and diamond layer contact interface be the unequal protruding structure of concentric annular, protruding structure protruding great, simultaneously along radially reducing gradually to arch all around. The beneficial effect of the utility model: because the adoption interface is the cemented carbide substrate of the unequal protruding structure of concentric annular, route is more swept to the cobalt when subtracting short sintering in various degree, and increase area of contact is favorable to compound piece synthesis to be grown to the inside bonding strength of compound piece can be improved, the impact resistance of compound piece is improved, it is higher to make its diamond layer density to the intensity, wearability, impact resistance, heat resistance, the oxidation resistance that make the diamond layer obtain further improvement, improve it and synthesize performance.

Description

A kind of novel interfacial growth type boric diamond composite sheet
Technical field
This utility model relates to a kind of novel growth type boric diamond composite sheet, and this composite sheet is applicable to the application of the various complex environments that the wearability of composite sheet, thermostability, impact resistance, electric conductivity are all had higher requirements。
Background technology
At present, the many employings of boric diamond composite sheet that each field uses include the multiple additives of boron powder and mix with common artificial diamond powder, or a large amount of boric diamond powder mix with common artificial diamond powder and is aided with other bonding agent on a small quantity again, sinter through High Temperature High Pressure with hard alloy substrate and form。
This composite sheet has two aspects not enough: one is this composite sheet or owing to the addition of a large amount of bonding agent in its powder, although its electric conductivity is improved, but diamond layer heat resistance is limited, non-oxidizability is not high, or the boric diamond powder owing to adding is too many, and himself strength character of boric diamond is more much lower than common diamond, cause that the wearability of diamond layer, impact resistance are limited, about the 50% of only common artificial diamond compact;The carbide matrix body interface that two is currently used is commonly planar structure or groove structure design, cause that groove part cobalt sweeps more path length when sintering, growth difficulty, diamond layer is low with hard alloy substrate bond strength, cause that composite sheet quality is relatively low, and affect finished product rate, constrain its some have superior performance require field application。
Utility model content
The purpose of this utility model is to provide a kind of novel growth type boric diamond composite sheet, it is effectively increased the thermostability of its diamond layer, the performances such as wearability, impact resistance, electric conductivity have been taken into account again simultaneously, and the use of the hard alloy substrate designed by particular interface, composite sheet sintering is made to be easier to, internal bond strength is higher, and combination property improves a lot, and is more beneficial for producing and promoting the use of。
To achieve these goals, this utility model is by the following technical solutions:
A kind of novel interfacial growth type boric diamond composite sheet, it includes diamond layer, hard alloy substrate, it is characterized in that: described hard alloy substrate and diamond layer contact interface are unequal concentric annular bulge-structure, the intermediate projections of described bulge-structure is relatively big, is radially gradually reduced to surrounding projection simultaneously。
Wherein, described carbide matrix body portion is to be made up of WC-Co hard alloy。
The hard alloy substrate used in this utility model, its interface adopts unequal concentric annular bulge-structure, bossing both can increase the contact area of diamond layer and hard alloy, cobalt sweeping in diamond layer can be shortened simultaneously and get over path, so that diamond layer is combined more firm with hard alloy substrate, it is more beneficial for the growth inside of diamond layer。
Diamond layer of the present utility model adds a small amount of (being generally 5-15%) boric diamond powder in common artificial diamond powder simultaneously, grows sintering when superhigh-temperature and-pressure with the hard alloy substrate of particular interface design and form when without any bonding agent。With the addition of a small amount of boric diamond powder, make this more common artificial diamond compact of composite sheet electric conductivity have better improvement, the wearability of diamond layer, impact resistance will not be greatly reduced again simultaneously;Again owing to not adding any bonding agent in diamond batch mixing, fully rely on the cobalt infiltration in hard alloy substrate when synthesis and sweep more in diamond layer, participate in the recrystallization growth of diamond, make its diamond layer consistency higher, the intensity of diamond layer can be increased on the one hand, improve the wearability of diamond layer, impact resistance, on the other hand due to diamond layer interior solid, metal residual is few, makes the thermostability of diamond layer, non-oxidizability improve further, thus improving its serviceability。
The beneficial effects of the utility model: owing to employing interface is the hard alloy substrate of unequal concentric annular bulge-structure, when shortening sintering in various degree, cobalt sweeps path more, increase contact area, be conducive to composite sheet synthetically grown, and the internal bond strength of composite sheet can be improved, improve the impact resistance of composite sheet;Simultaneously because the addition of a small amount of boric diamond powder makes this more common artificial diamond compact of composite sheet electric conductivity have better improvement, and adopt, due to it, the recrystallization growth type sintering added without bonding agent, make its diamond layer consistency higher, so that the intensity of diamond layer, wearability, impact resistance, thermostability, non-oxidizability are further improved, improve its comprehensive serviceability。
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model。
Fig. 2 is hard alloy substrate structural representation。
Fig. 3 is Fig. 2 schematic top plan view。
Drawing reference numeral: 1, boric diamond composite sheet;2, diamond layer;3, hard alloy substrate。
Detailed description of the invention
Shown in Fig. 1, Fig. 2, Fig. 3: a kind of novel interfacial growth type boric diamond composite sheet, it includes diamond layer 2 and hard alloy substrate 3, forms complete boric diamond composite sheet 1 by superhigh-temperature and-pressure recrystallization growth sintering。
Described hard alloy substrate 3 and diamond layer 2 contact interface are unequal concentric annular bulge-structure, and the intermediate projections of described bulge-structure is relatively big, is radially gradually reduced to surrounding projection simultaneously。
Wherein, described hard alloy substrate 3 part is to be made up of WC-Co hard alloy。
Concrete manufacture is to utilize diamond synthesis press to be aided with other heat preservation medium, transmission media, forms superhigh-temperature and-pressure environment, diamond powder layer and hard alloy substrate carries out recrystallization growth sintering and forms。
This utility model is mainly the use of the hard alloy substrate of unequal concentric annular bulge-structure by interface, when realizing shortening sintering, cobalt sweeps path more, increase the effect of contact area, thus being conducive to composite sheet synthetically grown, the internal bond strength of composite sheet can be improved, improve the impact resistance of composite sheet。Two are positioned against in common artificial diamond powder adds a small amount of (general weight ratio is 5-15%) boracic metal and stone powder, when adding without any bonding agent, after superhigh-temperature and-pressure growth sintering, make the recrystallization through diamond inside it, bonding is fully, consistency is high, reaches to improve the purpose of the wearability of composite sheet, thermostability, impact resistance, electric conductivity。
Above in conjunction with accompanying drawing, this utility model preferred embodiment and embodiment are explained in detail, but this utility model is not limited to the above-described embodiment and examples, in the ken that those skilled in the art possess, also how make a variety of changes under the premise without departing from design of the present utility model。

Claims (2)

1. a novel interfacial growth type boric diamond composite sheet, it includes diamond layer, hard alloy substrate, it is characterized in that: described hard alloy substrate and diamond layer contact interface are unequal concentric annular bulge-structure, the intermediate projections of described bulge-structure is relatively big, is radially gradually reduced to surrounding projection simultaneously。
2. novel interfacial growth type boric diamond composite sheet according to claim 1, it is characterised in that: described carbide matrix body portion is to be made up of WC-Co hard alloy。
CN201620045447.5U 2016-01-18 2016-01-18 Novel boracic diamond compact piece of interface growth type Active CN205326393U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620045447.5U CN205326393U (en) 2016-01-18 2016-01-18 Novel boracic diamond compact piece of interface growth type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620045447.5U CN205326393U (en) 2016-01-18 2016-01-18 Novel boracic diamond compact piece of interface growth type

Publications (1)

Publication Number Publication Date
CN205326393U true CN205326393U (en) 2016-06-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106735252A (en) * 2017-03-23 2017-05-31 上海昌润极锐超硬材料有限公司 A kind of method for manufacturing boric diamond composite sheet
CN111364920A (en) * 2020-02-26 2020-07-03 中国石油大学(北京) Step type polycrystalline diamond compact and drill bit provided with same
CN111905654A (en) * 2019-12-04 2020-11-10 正元国际矿业有限公司 Artificial diamond polycrystal and preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106735252A (en) * 2017-03-23 2017-05-31 上海昌润极锐超硬材料有限公司 A kind of method for manufacturing boric diamond composite sheet
CN106735252B (en) * 2017-03-23 2019-02-05 上海昌润极锐超硬材料有限公司 A method of manufacture boric diamond composite sheet
CN111905654A (en) * 2019-12-04 2020-11-10 正元国际矿业有限公司 Artificial diamond polycrystal and preparation method thereof
CN111905654B (en) * 2019-12-04 2021-12-24 三河市晶日金刚石复合材料有限公司 Artificial diamond polycrystal and preparation method thereof
CN111364920A (en) * 2020-02-26 2020-07-03 中国石油大学(北京) Step type polycrystalline diamond compact and drill bit provided with same

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