CN101016826B - Bit body of diamond bit and manufacture method therefor - Google Patents

Bit body of diamond bit and manufacture method therefor Download PDF

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Publication number
CN101016826B
CN101016826B CN 200710051637 CN200710051637A CN101016826B CN 101016826 B CN101016826 B CN 101016826B CN 200710051637 CN200710051637 CN 200710051637 CN 200710051637 A CN200710051637 A CN 200710051637A CN 101016826 B CN101016826 B CN 101016826B
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corn
invention
driller
abrasion
layer
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CN 200710051637
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Chinese (zh)
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CN101016826A (en )
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张烈华
彭金龙
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江汉石油钻头股份有限公司
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Abstract

The invention relates to a method for producing drilling head and body of diamond driller, comprising a skeleton corn and an outer abrasion resistant layer. The invention is characterized in that theskeleton corn is made from a steel corn and outside casting sintered elements, the outer abrasion resistant layer is formed by carbon tungsten sinter layer, the casting sintered element and the carbontungsten sinter are formed by high-temperature fusing and sintering adhesive metal, to be integrated with the steel corn. The invention uses the casting steel drop as skeleton to improve strength andflexibility of the corn of driller, while the surface has same abrasion resistance as traditional carbon tungsten powder blank PDC driller, and its bend resistance and impact resistance are 40% higher than traditional driller. The invention can save cost and avoid crack, to improve service life or the like.

Description

一种金刚石钻头的钻头体及其制作方法 A line of diamond drill bit body and its manufacturing method

技术领域 FIELD

[0001] 本发明涉及一种用于石油地质钻探领域的金刚石钻头的钻头体及该钻头体的制 [0001] The petroleum system involves a diamond drill for the field of geological drilling bit body of the present invention and the bit body

作方法。 As a method.

[0002] 背景技术 [0002] BACKGROUND OF THE INVENTION

[0003] 在石油钻井中,金刚石钻头(PDC钻头)由于具有使用寿命较长的特性而被广泛应用。 [0003] In petroleum drilling, diamond bit (PDC bit) due to the long life characteristics is widely used. 金刚石钻头结构上主要由与钻杆连接的上体、钻头体和焊接在钻头体球鼻上的刀片三个部分组成,钻头体上设置有喷嘴孔,钻头体是金刚石钻头起关键作用的部件。 Structure mainly by the diamond bit drill rod connected to the upper body, the bit body, and welding portion of the blade on the drill bit bulbous body composition, the bit body is provided with a nozzle hole, a diamond drill bit body play a key role member. 现有的金刚石钻头钻头体都是以碳化钨粉为骨架材料,以Cu合金为粘结金属,采用无压浸渍的方法制造的。 Conventional diamond drill bit body are tungsten carbide powder as matrix material, an alloy containing Cu as a bonding method of a metal impregnated pressureless manufactured. 这样的钻头体固然耐磨损,抗冲蚀,但是胎体的强度和韧性比较低,通常抗弯强度在700MPa左右,冲击韧性不高于5J/CM2。 Such a course bit body wear resistance, erosion resistance, but the strength and toughness of the matrix is ​​relatively low, typically about 700MPa flexural strength, impact toughness is not higher than 5J / CM2. 在实际使用中由于强度低的问题易引起钻头体刀翼的开裂甚至断裂,从而给钻井带来潜在的隐患和危险,严重影响金刚石钻头的综合性能和使用寿命。 In actual use, due to the low intensity of the problem can lead to a bit body knife blade cracking or fracture, leading to potential pitfalls and dangers to drilling, seriously affect the overall performance and service life of diamond bits. 美国专利4884477介绍了一种在钻头体骨架材料中添加钢、铁等金属粉末,表面采用强化工艺的钻头体制造方法,但是该专利介绍的表面强化工艺是反复喷胶和碳化钨粉的工艺方法,这种方法效率低,涂层薄,表面强化效果受到很大的限制。 U.S. Patent No. 4,884,477 describes adding a reinforcing material in the steel bit body, a metal such as iron powder, the surface of the bit body production method of the strengthening process, the surface hardening process of the patent describes a process for the repeated gluing and tungsten carbide powder low efficiency of this method, thin coating, surface hardening effect is greatly limited. 至于钢体PDC钻头体,固然具有很高的强度和韧性,但是采用堆焊等方法进行表面强化的钢体钻头体仍然容易受到冲蚀。 As steel body PDC bits, although having a high strength and toughness, but using a method such as welding surface hardening of the steel body bit body remain vulnerable to erosion. 因此,如何在提高钻头体强度的同时,保证钻头体的耐磨、抗冲蚀能力,是提高金刚石钻头体综合性能的重要课题。 Therefore, how to improve the bit body at the same time the strength to ensure that wear and erosion resistance ability of the bit body, is an important task to improve the overall performance of the diamond drill bit body. [0004] 发明内容 [0004] SUMMARY OF THE INVENTION

[0005] 本发明所要解决的技术问题是在于针对上述现有技术存在的不足而提供一种表 [0005] The present invention solves the technical problem that for the disadvantages of the prior art described above and to provide a table

面耐磨、抗冲蚀、心部强而韧的金刚石钻头钻头体,以及制作该钻头体的方法。 Surface abrasion, erosion-resistant, strong and tough core portion of diamond drill bit body, and a method of fabrication of the bit body.

[0006] 本发明为解决上述提出的问题所采用的钻头体技术方案为: [0006] The bit body of the present invention to solve the technical problem set forth above is adopted:

[0007] 包括有骨芯和外耐磨层,钻头体上开设有喷嘴孔,其不同之处在于所述的骨芯由 [0007] bone comprising a core and an outer wear layer, the bit body defines a nozzle hole, which differs in that the core is made of bone

钢芯8和包覆钢芯的铸钢丸烧结体6构成,所述的外耐磨层由碳化钨烧结层2构成,所述的 Steel core 8 and clad steel core steel balls constituting a sintered body 6, the outer wear layer is made of sintered tungsten carbide layer 2, the

铸钢丸烧结体与碳化钨烧结层由粘结金属经高温熔渗烧结而成,并与钢芯烧结成一体;所 Steel balls sintered tungsten carbide sintered layer of binder metal infiltrated sintering at high temperature, and integrally sintered into the steel core; the

述的铸钢丸烧结体由粒径为0. 05〜0. 50毫米的铸钢丸与粘结金属经高温熔渗烧结而成, Said sintered body of steel balls having a particle size of 0. 05~0. 50 mm steel balls and binder metal infiltrated sintering at high temperature,

铸钢丸所占重量比为40〜60%,粘结金属为余量。 Steel balls proportion of 40~60% by weight, of the balance binder metal.

[0008] 按上述方案,在钻头体的喷嘴孔内壁覆有碳化钨烧结层2。 [0008] In the above-described embodiment, the nozzle hole inner walls coated with tungsten carbide bit body 2 sintered layer.

[0009] 按上述方案,所述的碳化钨烧结层的厚度为1〜8毫米,由粒径为0. 01〜0. 50毫米的铸造或者烧结碳化钨粉与粘结金属经高温熔渗烧结而成,铸造或者烧结碳化钨粉所占重量比为55〜70%,粘结金属为余量。 [0009] In the above-described embodiment, the thickness of the tungsten carbide sintered layer is 1~8 mm, a diameter of 0. 01~0. 50 mm cast or sintered tungsten carbide powder and binder metal infiltrated sintering at high temperature formed, cast or sintered tungsten carbide powder percentage of 55~70% by weight, of the balance binder metal. [0010] 本发明的制作方法的技术方案为: [0010] aspect of the manufacturing method of the present invention are:

[0011] 首先,设置与待加工的金刚石钻头钻头体相匹配的石墨或陶瓷凹腔模具l,包括水孔和喷嘴孔芯棒3 ; [0011] First, a diamond drill to be machined to match the bit body cavity graphite or ceramic molds L, water holes and the nozzle holes comprising a core rod 3;

[0012] 在凹腔模具表面涂抹由碳化钨粉和胶粘剂混合成的待烧结层,待烧结层的厚度为1〜8毫米,待烧结层碳化钨粉和胶粘剂混合的组分含量按重量计为:碳化钨粉80-90%,胶粘剂余量;[0013] 涂抹好之后把铸钢丸装入模具中,装好钢芯8,同时将水孔和喷嘴孔芯棒放入定位,再加入粘结金属9和助熔剂,然后入炉熔渗烧结,熔渗烧结温度在900-120(TC之间,等粘结金属完全浸渍了表面涂抹层后出炉保温冷却,再开模清理即成。 [0012] The applicator mixture of tungsten carbide powder and an adhesive layer to be sintered into the surface of the mold cavity, the thickness of the layer to be sintered is 1~8 mm, the content of the component to be sintered tungsten carbide powder and an adhesive layer mixing by weight : 80-90% tungsten carbide powder, the adhesive margin; [0013] after the applicator well steel balls charged into a mold, installed steel core 8, while the water holes and the nozzle holes positioned into the mandrel, then add viscosity junctions 9 and a flux of metal, infiltration into the furnace and then sintered, the sintering temperature is 900-120 infiltration (between TC, and the like after the binder metal surface applicator fully impregnated insulation layer is baked to cool and mold cleaning Serve.

[0014] 按上述方案,喷嘴孔芯棒3为石墨芯棒,在喷嘴孔芯棒上涂抹由碳化钨粉和胶粘剂混合成的待烧结层,待烧结层的厚度为1〜8毫米。 [0014] The above-described embodiment, the nozzle orifice 3 is a graphite mandrel mandrel, apply a mixture of tungsten carbide powder to be sintered and the adhesive layer on the mandrel the nozzle holes, the thickness of the layer to be sintered is 1~8 mm.

[0015] 按上述方案,所述的胶粘剂是由甘油,烷基丙烯酸脂,二乙二醇单丁醚配制而成的 [0015] In the above-described embodiment, the adhesive is from glycerol, alkyl acrylate, diethylene glycol monobutyl ether prepared from

流态胶粘剂,这种胶粘剂在50(TC下完全挥发,达到钻头体浸渍温度后,通过粘结金属的熔 Flow pattern of adhesive, such adhesive is completely volatilized in 50 (the TC, reach the drill bit body temperature after impregnation, by melting the binder metal

渗,在钻头体外表面形成了一层碳化钨耐磨层。 Infiltration, the formation of a layer of tungsten carbide wear-resistant layer on the outer surface of the drill bit. 所述的粘结金属为铜基合金。 The binder metal is copper-based alloy.

[0016] 本发明的有益效果在于:1、本发明主要通过采用铸钢丸作为骨架材料来实现钻头 Advantageous Effects [0016] The present invention is: 1, the present invention primarily through the use of steel balls as the matrix material to achieve bit

体心部的高强高韧,同时通过把碳化钨和流态胶粘剂混合后涂抹在模具表面,烧结后来实 High strength and toughness core body portion, while the tungsten carbide and fluidized by the mixed adhesive applied on the mold surface, then the solid sintered

现钻头体表层的耐磨抗冲蚀,且熔渗烧结体的应力分布均匀。 Now wear resistance of the surface erosion of the bit body, and infiltration of the sintered body uniform stress distribution. 2、本发明的钻头体,其表层和 2, the bit body of the present invention, the surface layer, and

传统碳化钨粉胎体PDC钻头体一样耐磨抗冲蚀,同时钻头体心部的抗弯强度和冲击韧性比 Conventional tungsten carbide powder matrix as wear PDC bit body erosion resistance, while the bending strength of the drill core body portion and a toughness ratio

传统碳化钨粉胎体PDC钻头体性能提高40%以上。 Conventional tungsten carbide powder matrix PDC bit body more than 40% performance improvement. 3、因为碳化钨粉的用量大大降低,从而 3, since the amount of tungsten carbide powder is greatly reduced,

不但降低了钻头制造成本,而且避免了钻头体刀翼因强度低而发生裂缝甚至开裂情况的发 Drill only reduces the manufacturing costs, but also avoids the bit body hair cutter wing occurrence of cracks due to low strength even in case of cracking

生,有效增强了金刚石钻头的综合性能,提高了金刚石钻头的使用寿命。 Health, effective way to boost the overall performance of the diamond drill, diamond drill bits to improve the service life.

[0017] 附图说明 [0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 图1为本发明一个实施例在制作时放入凹腔模具熔渗烧结时剖视结构图。 [0018] FIG. 1 embodiment into a cross sectional structural view when the mold cavity infiltration sintering in the production of the present invention. [0019] 图2为本发明一个实施例的剖视结构示意图。 [0019] Fig 2 a schematic cross-sectional structure of an embodiment of the present invention.

[0020] 图3为本发明制作方法中石墨喷嘴孔芯棒涂抹含胶粘剂碳化钨粉后的结构示意图。 Production Method [0020] FIG. 3 is a schematic view of the structure of the invention, an adhesive containing a graphite powder, tungsten carbide nozzle orifice applicator mandrel.

[0021] 图4为本发明一个实施例碳化钨烧结层的金相图。 [0021] FIG. 4 sintered tungsten carbide layer of a phase diagram according to the present embodiment of the invention. [0022] 图5为本发明一个实施例铸钢丸烧结体金相图。 [0022] Figure 5 one case of sintered body microstructure steel balls embodiment of the present invention FIG. [0023] 具体实施方式 [0023] DETAILED DESCRIPTION

[0024] 下面结合附图进一步说明本发明的实施例。 [0024] The following examples further illustrate the present invention in conjunction with the accompanying drawings.

[0025] 实施例如图1、2所示。 [0025] The embodiment example shown in FIGS. 首先将粒径介于0. 037毫米到0. 149毫米之间的铸造碳化钨粉和胶粘剂混合,制成具有一定胶粘性能的碳化钨粉胶合体,碳化钨颗粒和胶粘剂混合的组分含量按重量计为:碳化钨颗粒90%,胶粘剂余量。 First, a particle size between cast tungsten carbide powder and mixing adhesives between 0.037 mm to 0.149 mm, made of cemented carbide powder mixture having some adhesive properties, the tungsten carbide particles and adhesive component content by weight: 90% of tungsten carbide particles, an adhesive margin. 所述的胶粘剂按重量计由甘油1〜10% ,烷基丙烯酸脂5〜15% , 二乙二醇单丁醚余量,配制而成的流态胶粘剂,然后将碳化钨粉胶合体均匀的涂抹在组装好的石墨凹腔模具1和上模4上,涂抹3毫米厚左右,形成待烧结碳化钨烧结层2 ;同样在石墨喷嘴孔芯棒3的表面也均匀的涂抹一层3毫米厚左右的碳化钨粉胶合体,形成待烧结碳化钨烧结层2 ;涂抹好后放入凹腔模具1 ;然后在凹腔模具中装入一定量的铸钢丸,铸钢丸粒径介于O. 05毫米到0. 50毫米之间,铸钢丸的主要化学成分为:C :0. 85-1. 20%, Mn :0. 6-1. 2%, Si :0. 4-1. 0%, S、 P < 0. 05%, Fe :余量;适当振动之后,装入钢芯8 (含刀片5),然后再装入足够的铸钢丸,套上套筒7,根据所装入的铸钢丸的量装入适量的铜基(铜合金)粘结金属9和助熔剂,助熔剂可为硼砂,加入的量按重量计为为粘结金属的10%左右,再入炉烧结 By weight of the adhesive% glycerol 1~10, 5~15% alkyl acrylate, diethylene glycol monobutyl ether margin, the preparation of the adhesive flow pattern, and then cemented carbide powder is uniformly applied on the assembled graphite mold cavity 1 and the upper mold 4, the applicator of about 3 mm thick, is formed to be sintered cemented tungsten carbide layer 2; the same in the nozzle bore surface of the graphite mandrel 3 is also uniformly spread a layer 3 mm thick cemented tungsten carbide powder around the body, the sintered cemented tungsten carbide layer to be formed 2; smear well into the cavity of the mold 1; amount charged in the cavity of a mold steel balls, steel shot and the particle size of between O . between 05 mm to 0.50 mm, the major chemical components of steel balls: C:.. 0 85-1 20%, Mn:.. 0 6-1 2%, Si:. 0 4-1. 0%, S, P <0. 05%, Fe: the balance; after a suitable vibration charged steel core 8 (including the blade 5), then charged with a sufficient steel balls, put on the sleeve 7, in accordance with the the amount loaded steel balls was charged with an appropriate amount of copper (copper alloy) 9 binder metal and a flux, the flux may be borax, is added in an amount by weight of about 10% of binder metal, reentry sintering furnace . 当烧结炉炉温到达1100C。 When the furnace temperature reaches the sintering furnace 1100C. 后保温30分钟,然后将钻头体凹腔模具出炉、冷却,开模清理。 After incubation for 30 minutes and then baked bit body mold cavity, cooling, mold cleaning.

[0026] 按照本工艺方法烧结的钻头体经过后续钎焊、组焊、整形等工序制造的金刚石钻头的剖面示意图如图2所示,钻头体通过组焊焊缝焊接与上体12相固联,在钻头体的下端 [0026] sectional sintered diamond drill according to the present process for subsequent bit body through soldering, welding, shaping, etc. As shown in Figure manufacturing step, the bit body by welding weld 12 fixedly associated with the upper body 2 , the lower end of the bit body

4焊接金刚石复合片11。 4 is welded PDC 11.

[0027] 本发明做了材料力学性能测试对比试验。 [0027] The present inventors have made a comparative test material mechanical properties. 在同样的条件下,对铸造碳化钨粉烧结试样和铸钢丸烧结试样性能进行了测试分析,下表为传统铸造碳化钨粉和铸钢丸烧结试样性能数据测试对比表。 Under the same conditions, the properties of Sample 1 and Sample Sintering cast tungsten sintered steel balls were tested, the sample table of a conventional cast tungsten carbide powder and steel shot sintering performance test data comparison table.

[0028] 表一:铸造碳化鸨粉钻头体和铸钢丸钻头体性能数据测试对比表[0029] [0028] Table I: Casting Bustard carbide powder and steel shot drill bit body data of the test body performance comparison table [0029]

[0030] [0030]

<table>table see original document page 5</column></row> <table> <Table> table see original document page 5 </ column> </ row> <table>

[0031] 注[1]:条试样是直接烧结成条形试样,其中上试样是接近粘结金属部位的试样,下试样是远离粘结金属部位的试样。 [0031] Note [1]: Sample article is directly sintered into strip specimens, wherein the sample is a sample site near the binder metal, the metal sample is a sample away from the bond site.

[0032] 注[2]:板试样是在板状烧结体上取得的试样。 [0032] Note [2]: the sample is a sample plate on the plate made of a sintered body. [0033] 注[3]:"—-"表示没有试样,无测试数据。 [0033] Note [3]: "-" indicates that no samples, no test data.

Claims (8)

  1. 一种金刚石钻头的钻头体,包括有骨芯和外耐磨层,钻头体上开设有喷嘴孔,其特征在于所述的骨芯由钢芯和包覆钢芯的铸钢丸烧结体构成,所述的外耐磨层由碳化钨烧结层构成,所述的铸钢丸烧结体与碳化钨烧结层由粘结金属经高温熔渗烧结而成,并与钢芯烧结成一体;所述的铸钢丸烧结体由粒径为0.05~0.50毫米的铸钢丸与粘结金属经高温熔渗烧结而成,铸钢丸所占重量比为40~60%,粘结金属为余量。 A line of diamond drill bit body, including bone core and outer wear layer, defines the nozzle hole to the bit body, characterized in that the core consists of a steel core of bone clad steel core and a sintered body of steel balls, the outer wear layer is made of tungsten carbide sintered layer, the sintered body and the cast tungsten carbide pellets infiltrated sintered layer sintered from a high temperature binder metal, and integrally sintered into the steel core; the steel balls sintered body having a particle size of 0.05 to 0.50 mm steel balls and binder metal infiltrated sintering at high temperature, the weight ratio of steel balls proportion of 40 to 60%, for the balance binder metal.
  2. 2. 根据权利要求1所述的金刚石钻头的钻头体,其特征在于在钻头体的喷嘴孔内壁覆有碳化钨烧结层。 2. The bit body of the diamond drill bit according to claim 1, characterized in that the nozzle hole inner walls coated with tungsten carbide bit body sintered layer.
  3. 3. 根据权利要求1所述的金刚石钻头的钻头体,其特征在于所述的碳化钨烧结层的厚度为1〜8毫米,由粒径为0. 01〜0. 50毫米的铸造或者烧结碳化钨粉与粘结金属经高温熔渗烧结而成,铸造或者烧结碳化钨粉所占重量比为55〜70%,粘结金属为余量。 The diamond of the drill bit body of claim 1, characterized in that the thickness of the sintered tungsten carbide layer is 1~8 mm, a diameter of 0. 01~0. 50 mm of cast or sintered carbide tungsten powder and binder metal infiltrated sintering at high temperature, cast or sintered tungsten carbide powder percentage of 55~70% by weight, of the balance binder metal.
  4. 4. 根据权利要求1或2所述的金刚石钻头的钻头体,其特征在于铸钢丸的主要化学成分为:C :0. 85-1. 20%, Mn :0. 6-1. 2%, Si :0. 4-1. 0%, S、P < 0. 05%, Fe :余量。 According to claim 1 or 2 or diamond drill bit body as claimed in claim, characterized in that the main chemical composition of steel balls: C:.. 0 85-1 20%, Mn:.. 0 6-1 2% , Si:.. 0 4-1 0%, S, P <0. 05%, Fe: balance.
  5. 5. 根据权利要求1或3所述的金刚石钻头的钻头体,其特征在于所述的粘结金属为铜基合金。 According to claim 13 or a diamond drill bit body as claimed in claim, wherein said metal is copper-based alloy binder.
  6. 6. —种金刚石钻头的钻头体制作方法,其特征在于首先,设置与待加工的金刚石钻头钻头体相匹配的石墨或陶瓷凹腔模具,包括水孔和喷嘴孑L芯棒;在凹腔模具表面涂抹由碳化钨粉和胶粘剂混合成的待烧结层,待烧结层的厚度为1〜 8毫米,待烧结层碳化钨粉和胶粘剂混合的组分含量按重量计为:碳化钨粉80-90 %,胶粘剂余量;涂抹好之后把铸钢丸装入模具中,装好钢芯,同时将水孔和喷嘴孔芯棒放入定位,再加入粘结金属和助熔剂,然后入炉熔渗烧结,熔渗烧结温度在900-120(TC之间,等粘结金属完全浸渍了表面涂抹层后出炉保温冷却,再开模清理即成。 6. - The method of making the drill bit body of diamond seed, wherein the first set to be machined to match the diamond drill bit body cavity of a mold of graphite or a ceramic, and comprises a water nozzle apertures larvae L mandrel; in the cavity mold a surface applicator and a mixture of tungsten carbide powder to be sintered into the adhesive layer, the thickness of the layer to be sintered is 1 ~ 8 mm, tungsten carbide powder to be sintered layer and the adhesive content of the mixed components by weight: 80-90 carbide powder %, the balance of adhesive; good smear after the steel balls into a mold, installed the steel core, while the water holes and the nozzle holes positioned into the mandrel, binder metal and a flux was added, and then infiltrated into the furnace sintering, the sintering temperature is 900-120 infiltration (between TC, and the like after the binder metal surface applicator fully impregnated insulation layer is baked to cool and mold cleaning Serve.
  7. 7. 根据权利要求6所述的金刚石钻头的钻头体制作方法,其特征在于喷嘴孔芯棒为石墨芯棒,在喷嘴孔芯棒上涂抹由碳化钨颗粒和胶粘剂混合成的待烧结层,待烧结层的厚度为1〜8毫米。 The bit body of diamond drill head manufacturing method according to claim 6, characterized in that the nozzle holes mandrel graphite mandrel, apply a mixture of tungsten carbide particles to be sintered and the adhesive layer on the mandrel the nozzle holes, to be sintered layer has a thickness of 1~8 mm.
  8. 8. 根据权利要求6或7所述的金刚石钻头的钻头体制作方法,其特征在于所述的胶粘剂按重量计由甘油1〜10%,烷基丙烯酸脂5〜15%,二乙二醇单丁醚余量,配制而成的流态胶粘剂。 The bit body of diamond production method according to claim 6 or 7, wherein said drill bit, wherein the adhesive by weight of glycerol 1~10% 5~15% alkyl acrylate, diethylene glycol mono balance ether, prepared from the adhesive flow regime.
CN 200710051637 2007-03-08 2007-03-08 Bit body of diamond bit and manufacture method therefor CN101016826B (en)

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CA2705158C (en) 2007-11-08 2016-02-16 Alfa Laval Corporate Ab A diamond metal composite
CN102198506B (en) * 2010-03-26 2014-08-20 成都百施特金刚石钻头有限公司 Sintering method for matrix drill bits over 16'
CN101780665B (en) * 2010-03-31 2012-08-08 泉州众志金刚石工具有限公司 Diamond Brad grinding block
CN101975026A (en) * 2010-10-18 2011-02-16 韩桂云 PDC (Polycrystalline Diamond Compact) drill
CN102513540B (en) * 2011-12-12 2016-01-06 杨岗 A method of making a sintered carcass for drilling bits
CN103527100A (en) * 2013-10-31 2014-01-22 沈阳中油天宝(集团)鞍山钻头有限公司 Method for connecting polycrystalline diamond compact (PDC) bit sintering body with connector body
GB201609317D0 (en) * 2014-02-11 2016-07-13 Halliburton Energy Services Inc Precipitation hardend matrix drill bit
CN105089508A (en) * 2014-05-05 2015-11-25 成都百施特金刚石钻头有限公司 Rotational drilling well drill bit and manufacturing method for same
CN104399992B (en) * 2014-10-20 2017-01-18 四川川庆石油钻采科技有限公司 A method for producing a dual impregnated cutting block
CN106216689B (en) * 2016-07-21 2018-03-02 四川川石金刚石钻头有限公司 Preparation of one kind pdc bit matrix
CN106636912A (en) * 2016-08-29 2017-05-10 昆山新浦瑞金属材料有限公司 High-hardness strengthened steel shot and manufacturing method thereof

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