JP2006055877A - Cemented carbide material - Google Patents
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Abstract
Description
本発明は、超硬合金からなる基体に雌ネジや雄ネジといったネジが付いた超硬合金材に関するものである。特に、超硬合金からなる基体とネジ加工部とが強固に接合されている超硬合金材に関するものである。 The present invention relates to a cemented carbide material in which a base such as a cemented carbide is provided with a screw such as a female screw or a male screw. In particular, the present invention relates to a cemented carbide material in which a substrate made of cemented carbide and a threaded portion are firmly joined.
従来、パンチダイなどのプレス加工材や種々の加工治具材といった加工材の材料として、高強度で高硬度な超硬合金が利用されている。超硬合金とは、WC(タングステンカーバイト)といった金属炭化物からなる硬質相をCo、Niなどの鉄族金属からなる結合相で焼結結合した複合材料である。このような超硬合金からなる加工材を加工装置本体などに取り付けを行うべく、加工材には、ネジ加工が施されたネジ加工部が設けられる。このとき、超硬合金に直接ネジ加工を行うと、上記のように超硬合金は高硬度であることから、相手側のネジが摩耗してしまい、締め付けが効かなくなることがある。そこで、従来、ネジ加工部を鉄(鋼)にて形成した加工が知られている。この加工材は、超硬合金に挿入穴を設けておき、鋼製の雌ネジ加工用部材を挿入穴に挿入してロウ付けし、加工用部材にネジ加工を施すことで得られる(特許文献1参照)。また、特許文献2では、基体となる超硬合金と異なる超硬合金にて雌ネジ加工用部材を構成し、基体と一体に焼結した超硬合金焼結体が開示されている。
Conventionally, high-strength and high-hardness cemented carbide has been used as a material for processing materials such as press working materials such as punch dies and various processing jig materials. The cemented carbide is a composite material obtained by sintering and bonding a hard phase made of a metal carbide such as WC (tungsten carbide) with a binder phase made of an iron group metal such as Co or Ni. In order to attach a workpiece made of such a cemented carbide to a processing apparatus main body or the like, the workpiece is provided with a threaded portion subjected to screw machining. At this time, if screw processing is performed directly on the cemented carbide, the cemented carbide has a high hardness as described above, and therefore, the mating screw may be worn and tightening may not be effective. Therefore, processing in which a threaded portion is formed of iron (steel) is conventionally known. This workpiece is obtained by providing an insertion hole in a cemented carbide, inserting a steel female thread processing member into the insertion hole, brazing, and threading the processing member (Patent Document). 1).
しかし、特許文献1に記載されるようにネジ加工用部材をロウ付けする場合、基体となる超硬合金との接合強度が充分に得られない恐れがある。ロウ付けは、作業者の技能レベルによってバラつきがあり、基体に設けた挿入穴の全面に亘って均一に塗布されていないと、ネジ加工部材が基体から外れて抜け落ちる恐れがある。また、鋼は、耐食性に劣るため、使用環境によっては適用できないこともある。更に、基体に複数の挿入穴を設ける場合、穴あけ精度が低下する恐れもある。 However, when the screw machining member is brazed as described in Patent Document 1, there is a possibility that the bonding strength with the cemented carbide as the base cannot be sufficiently obtained. Brazing varies depending on the skill level of the operator. If the brazing is not uniformly applied over the entire surface of the insertion hole provided in the base, the threaded member may come off the base and fall off. Moreover, since steel is inferior in corrosion resistance, it may not be applicable depending on the use environment. Further, when a plurality of insertion holes are provided in the base, the drilling accuracy may be reduced.
一方、特許文献2に記載されるような焼結体の場合、ネジ加工部材が基体と一体に焼結されているため、充分な接合強度を有する。しかし、ネジ加工部材が加工性に劣る超硬合金で形成されているため、ネジ加工を行いにくい。
On the other hand, in the case of a sintered body as described in
そこで、本発明は、超硬合金からなる基体との接合強度に優れると共に、ネジ加工が行い易いネジ加工部を具える超硬合金材を提供することにある。 Therefore, the present invention is to provide a cemented carbide material having a threaded portion that is excellent in bonding strength with a base made of a cemented carbide and that can be easily threaded.
本発明は、ネジ加工部材をNi含有材料にて形成することで上記目的を達成する。即ち、本発明超硬合金材は、超硬合金からなる基体と、この基体に一体焼結されたネジ加工部とを有し、ネジ加工部をNi含有材料にて形成したことを特徴とする。ただし、Ni含有材料のNi含有量は、50質量％以上とする。以下、本発明をより詳しく説明する。 The present invention achieves the above object by forming a threaded member with a Ni-containing material. That is, the cemented carbide material of the present invention has a base made of cemented carbide and a threaded portion integrally sintered with the base, and the threaded portion is formed of a Ni-containing material. . However, the Ni content of the Ni-containing material is 50% by mass or more. Hereinafter, the present invention will be described in more detail.
本発明において基体は、超硬合金からなるものとする。超硬合金は、周期律表IVa、Va、VIa族金属の炭化物からなる硬質相と、1種以上の鉄族金属からなる結合相とから構成されるもの(不可避的不純物を含む)が挙げられる。具体的な硬質相としては、例えば、WC、TiC、TaCなどが挙げられる。硬質相は、WCのみとしてもよいし、WCとその他の金属炭化物とを混合させてもよい。その他、WCを主成分(硬質相中70質量％以上)とし、周期律表IVa、Va、VIa族金属の炭化物(WCを除く)、窒化物及び炭窒化物よりなる群から選ばれる1種以上の化合物を含むものとしてもよい。特に、WC-Co系超硬合金は、高強度、高硬度であり、種々の特性に優れる。鉄族金属としては、Fe、Co、Niが挙げられる。その他、Crなどを添加させてもよい。公知の組成の超硬合金を利用してもよい。例えば、WC:70〜95質量％、Co:5〜30質量％、不可避的不純物からなるもの、WC:73〜85質量％、Co:10〜20質量％、Ni:3.0〜6.0質量％、Cr:0.5〜1.5質量％、不可避的不純物からなるものなどが挙げられる。 In the present invention, the substrate is made of a cemented carbide. Cemented carbides include those composed of a hard phase composed of carbides of Group IVa, Va, and VIa group metals and a binder phase composed of one or more iron group metals (including inevitable impurities). . Specific examples of the hard phase include WC, TiC, and TaC. The hard phase may be WC alone, or WC and other metal carbides may be mixed. In addition, one or more selected from the group consisting of carbides (except WC), nitrides, and carbonitrides of Group IVa, Va, and VIa metals of the periodic table with WC as the main component (70 mass% or more in the hard phase) It is good also as a thing containing these compounds. In particular, WC-Co based cemented carbide has high strength and high hardness and is excellent in various properties. Examples of iron group metals include Fe, Co, and Ni. In addition, Cr or the like may be added. A cemented carbide having a known composition may be used. For example, WC: 70-95% by mass, Co: 5-30% by mass, inevitable impurities, WC: 73-85% by mass, Co: 10-20% by mass, Ni: 3.0-6.0% by mass, Cr : 0.5 to 1.5 mass%, and those composed of inevitable impurities.
本発明においてネジ加工部は、Ni含有材料にて形成する。具体的には、Niを50質量％以上含有するものとする。Niと不可避的不純物とからなる純Ni材(Ni含有量：99.9質量％以上)を利用してもよい。上記のように基体となる超硬合金は、結合相にCo、Niといった鉄族金属を含有している。従って、結合相の構成元素とほぼ同等の性質、或いは同じ性質を有するNi含有材料にてネジ加工部を形成し、基体と一体に焼結することで、基体とネジ加工部との境界においてネジ加工部を構成するNiが基体に拡散する。そのため、基体とネジ加工部とが相互に強固に接合することができ、ネジ加工部が基体から外れて抜け落ちることがない。また、Ni含有材料は、鋼よりも耐食性に優れるため、本発明超硬合金材は、腐食環境下であっても充分に使用することができる。更に、Ni含有材料は、超硬合金よりもネジ加工性に優れるため、ネジ加工を簡単に行うことができる。加えて、Ni含有材料は、上記のように基体となる超硬合金の結合相と同等の性質を有する元素Niを含有することから、基体に設けた挿入穴の寸法誤差をある程度補正することができる。従来、Ni含有材料は、強度が比較的低く、ネジ加工材には不向きであると考えられていた。しかし、本発明者が調べたところ、Niを50質量％以上含有するNi含有材料であっても、加工装置本体との取り付けに必要とされる強度を充分に具えるとの知見を得た。この知見に基づき、本発明では、ネジ加工を施すネジ加工部の形成材料として、Ni含有材料を利用することを規定する。 In the present invention, the threaded portion is formed of a Ni-containing material. Specifically, Ni is contained at 50% by mass or more. A pure Ni material (Ni content: 99.9% by mass or more) composed of Ni and inevitable impurities may be used. As described above, the cemented carbide as a base contains an iron group metal such as Co or Ni in the binder phase. Therefore, by forming a threaded portion with a Ni-containing material having substantially the same or the same properties as the constituent elements of the binder phase and sintering it integrally with the base, a screw is formed at the boundary between the base and the threaded portion. Ni constituting the processed portion diffuses into the substrate. Therefore, the base body and the threaded portion can be firmly bonded to each other, and the threaded portion does not come off from the base body and fall off. In addition, since the Ni-containing material has better corrosion resistance than steel, the cemented carbide material of the present invention can be sufficiently used even in a corrosive environment. Furthermore, since the Ni-containing material is superior to the cemented carbide in screw workability, the screw work can be easily performed. In addition, since the Ni-containing material contains the element Ni having the same properties as the cemented carbide binder phase as described above, the dimensional error of the insertion hole provided in the substrate can be corrected to some extent. it can. Conventionally, Ni-containing materials have been considered to be relatively low in strength and unsuitable for threaded materials. However, as a result of investigation by the present inventor, it has been found that even a Ni-containing material containing Ni of 50 mass% or more has sufficient strength required for attachment to the processing apparatus main body. Based on this knowledge, the present invention stipulates that a Ni-containing material is used as a material for forming a threaded portion to be threaded.
ネジ加工部に施すネジ加工は、雌ネジでもよいし、雄ネジとすることもできる。いずれにしても、所望の雌ネジ又は雄ネジを形成することができる大きさのNi含有材料を用意すると共に、超硬合金からなる基体に用意したNi含有材を挿入する挿入穴を予め設けておき、挿入穴にNi含有材料を挿入配置して、一体に焼結するとよい。そして、焼結後、Ni含有材料にネジ加工を行い、ネジ加工部とするとよい。ネジ加工部に設けるネジを雌ネジとする場合、Ni含有材料の端面が基体表面と面一となるように配置し、雄ネジとする場合、所望の雄ネジを設けられるように基体からNi含有材料を突出させて配置する。 The screw processing applied to the screw processing portion may be a female screw or a male screw. In any case, a Ni-containing material having a size capable of forming a desired female screw or male screw is prepared, and an insertion hole for inserting the Ni-containing material prepared in the base made of cemented carbide is provided in advance. The Ni-containing material may be inserted into the insertion hole and sintered together. Then, after sintering, the Ni-containing material may be threaded to form a threaded portion. When the screw provided in the threaded part is a female screw, the Ni-containing material is arranged so that the end face of the Ni-containing material is flush with the substrate surface. Place the material protruding.
本発明超硬合金材は、例えば、以下のようにして得ることができる。
1. 所定の組成の硬質相、結合相からなる超硬合金粉末を混合し、所定の形状にプレスして圧粉体を作製し、予備焼結を行う。
このとき、所望のネジを設けるためのNi含有材料に応じた中子を配置し、挿入穴を形成する。
2. 所望のネジに応じたNi含有材料を用意する。
例えば、M10(直径φ10mm)の雌ネジを設ける場合、直径φ12mmの円筒状のNi含有材料を利用する。
3. 予備焼結体の挿入穴にNi含有材料を配置して、本焼結を行い、一体化する。
4. Ni含有材料に所望のネジ加工を施す。
予備焼結までの工程の条件(温度、時間、雰囲気など)、本焼結の条件(温度、時間、雰囲気など)は、超硬合金の製造に利用されている公知の条件を利用してもよい。また、Ni含有材料が本焼結中に溶融してしまわないように、本焼結温度は、Ni含有材料の融点以下とすることが好ましい。具体的には、1300〜1400℃程度が挙げられる。
The cemented carbide material of the present invention can be obtained, for example, as follows.
1. Cemented carbide powder composed of a hard phase and a binder phase having a predetermined composition is mixed, pressed into a predetermined shape to produce a green compact, and pre-sintered.
At this time, a core corresponding to the Ni-containing material for providing a desired screw is arranged to form an insertion hole.
2. Prepare a Ni-containing material according to the desired screw.
For example, when an M10 (diameter φ10 mm) female screw is provided, a cylindrical Ni-containing material having a diameter φ12 mm is used.
3. Place the Ni-containing material in the insertion hole of the pre-sintered body, perform the main sintering, and integrate.
4. Apply the desired threading to the Ni-containing material.
The pre-sintering process conditions (temperature, time, atmosphere, etc.) and the main sintering conditions (temperature, time, atmosphere, etc.) may be known conditions used for the manufacture of cemented carbide. Good. Moreover, it is preferable that the main sintering temperature is not higher than the melting point of the Ni-containing material so that the Ni-containing material does not melt during the main sintering. Specifically, about 1300-1400 degreeC is mentioned.
以上説明したように本発明超硬合金材によれば、基体となる超硬合金の結合相とほぼ同等の特性を有する元素Niを含有するNi含有材料にてネジ加工部を形成し、基体と一体に焼結することで、基体とネジ加工部との接合強度に優れ、ネジ加工部が外れるといった不具合を防止できる。また、Ni含有材料は、超硬合金と比較して加工性に優れるため、ネジ加工が施し易い。更に、Ni含有材料は、鋼材と比較して耐食性に優れるため、腐食環境であっても、充分に使用することができる。加えて、Ni含有材料は、上記のように基体の構成材とほぼ同等の、或いは全く同じ特性を有するNiを含有すため、基体に設けた挿入穴がある程度ずれても、Ni含有材料にて補正することができる。従って、本発明は、寸法精度に優れる超硬合金材を提供することができる。 As described above, according to the cemented carbide material of the present invention, the threaded portion is formed of the Ni-containing material containing the element Ni having substantially the same characteristics as the binder phase of the cemented carbide serving as the substrate. By sintering integrally, the bonding strength between the base body and the threaded portion is excellent, and the problem that the threaded portion is detached can be prevented. Moreover, since Ni containing material is excellent in workability compared with a cemented carbide, it is easy to thread. Furthermore, since Ni containing material is excellent in corrosion resistance compared with steel materials, it can be sufficiently used even in a corrosive environment. In addition, since the Ni-containing material contains Ni having substantially the same or exactly the same characteristics as the constituent material of the base as described above, even if the insertion hole provided in the base is displaced to some extent, the Ni-containing material It can be corrected. Therefore, this invention can provide the cemented carbide material excellent in dimensional accuracy.
以下、本発明の実施の形態を説明する。 Embodiments of the present invention will be described below.
超硬合金からなる基体と、Ni含有材料からなるネジ加工部とを一体に焼結した超硬合金材を作製し、基体とネジ加工部との境界の状態、接合強度を調べてみた。超硬合金材は、以下のようにして作製した。 A cemented carbide material was produced by integrally sintering a substrate made of cemented carbide and a threaded portion made of Ni-containing material, and the boundary state between the substrate and the threaded portion and the bonding strength were examined. The cemented carbide material was produced as follows.
表1に示す組成(いずれも質量％)からなる材料粉末を配合し、ボールミルで20時間湿式混合して乾燥した後、ネジ加工部用の挿入穴を設けるべく中子を配置してプレス成型して、圧粉体を得た。この圧粉体を焼結炉にて真空雰囲気中で700℃、6時間の条件で予備焼結を行い、予備焼結体を得た(直径φ61.8mm、長さ31.0mm)。本例では、直径φ14.8mm、長さ18.5mmの挿入穴を四つ設けた。 After blending material powders of the composition shown in Table 1 (both mass%), wet mixing with a ball mill for 20 hours and drying, then insert and insert-mold cores to provide insertion holes for threaded parts A green compact was obtained. This green compact was pre-sintered in a sintering furnace in a vacuum atmosphere at 700 ° C. for 6 hours to obtain a pre-sintered body (diameter 61.8 mm, length 31.0 mm). In this example, four insertion holes having a diameter of 14.8 mm and a length of 18.5 mm were provided.
一方、Ni含有材料として、Ni及び不可避的不純物からなる純Niを用い（HRB：60）、上記予備焼結体に設けた挿入穴に挿入でき、所望のネジ(本例では、M8の雌ネジ)が形成できる形状のものを用意した。本例では、直径φ12.0mm、長さ18.5mmの円柱状体を四本用意した。 On the other hand, as the Ni-containing material, using a pure Ni of Ni and inevitable impurities (H R B: 60), it can be inserted into the insertion hole formed in the preliminary sintered body, in the desired screw (this example, the M8 A shape capable of forming a female screw) was prepared. In this example, four cylindrical bodies having a diameter of 12.0 mm and a length of 18.5 mm were prepared.
上記円柱状のNi含有材料を予備焼結体の挿入穴にそれぞれ配置し、焼結炉にて真空雰囲気中で1380℃、1時間の条件で焼結を行い、超硬合金からなる基体と、Ni含有材料とが一体となった一体物を得た。そして、得られた一体物において、Ni含有材料にそれぞれM8の雌ネジ加工を施し(深さ15mm)、図1(A)に示すように超硬合金からなる基体2に四つの雌ネジ加工部3を有する超硬合金材1を得た。なお、本例で作製した超硬合金材1は、プレス加工に用いられる抜き用金型であり、中央部に設けた孔が抜き用金型として利用される。このような超硬合金材を超硬合金組成ごと(組成No.1〜7ごと)に二つずつ作製し、それぞれ組成ごとに試料No.1-1,1-2,2-1,2-2,3-1,3-2,4-1,4-2,5-1,5-2,6-1,6-2,7-1,7-2とした。
The cylindrical Ni-containing material is placed in each insertion hole of the pre-sintered body, sintered in a sintering furnace in a vacuum atmosphere at 1380 ° C. for 1 hour, a substrate made of cemented carbide, and A monolithic body with Ni-containing material was obtained. Then, in the obtained integral, each of the Ni-containing materials was subjected to M8 female thread processing (depth 15 mm), and four female thread processing portions were formed on the
得られた各超硬合金材No.1-1,2-1,3-1,4-1,5-1,6-1,7-1のそれぞれにおいて、超硬合金からなる基体とネジ加工部との境界を含む部分を切断し(図1(A)においてX-X断面)、図1(B)に示すように断面において境界部分を顕微鏡にて観察したところ(1000倍)、いずれの超硬合金材も、図2に示すようにネジ加工部の一部が基体の結合相に拡散した拡散層が数μmの幅で形成されていた。 In each of the obtained cemented carbide materials No. 1-1, 2-1, 3-1, 4-1, 5-1, 6-1, 7-1, the substrate made of cemented carbide and screw processing When cutting the part including the boundary with the section (XX cross section in FIG. 1 (A)), and observing the boundary part in the cross section with a microscope as shown in FIG. Also in the alloy material, as shown in FIG. 2, a diffusion layer in which a part of the threaded portion was diffused into the binder phase of the base was formed with a width of several μm.
得られた各超硬合金材No.1-2,2-2,3-2,4-2,5-2,6-2,7-2のそれぞれにおいて、市販されているM8の雄キャップネジ(株式会社コノエ製)を雌ネジ加工部に捻じ込み(深さ15mm)、ネジ加工部が超硬合金からなる基体から外れるか否かを調べてみた。すると、いずれの試料においてもネジ加工部が基体から外れることがなく、雄ネジの方が捻じ切れてしまった。このときのトルク強度を測定したところ、45N/mm2であった。このことから、本発明超硬合金材は、超硬合金からなる基体と、Ni含有材料からなるネジ加工部との接合強度に優れることがわかる。 In each of the obtained cemented carbide materials No. 1-2, 2-2, 3-2, 4-2, 5-2, 6-2, 7-2, a commercially available M8 male cap screw (Made by Konoe Co., Ltd.) was screwed into the female threaded part (depth 15 mm), and it was examined whether the threaded part was detached from the base made of cemented carbide. Then, in any sample, the threaded portion did not come off the base, and the male screw was twisted. The torque strength at this time was measured and found to be 45 N / mm 2 . From this, it can be seen that the cemented carbide material of the present invention is excellent in the bonding strength between the substrate made of cemented carbide and the threaded portion made of Ni-containing material.
また、上記と同様にして、超硬合金からなる基体に上記と異なるネジサイズのネジ加工部を具える超硬合金材を作製してみた。そして、上記と同様にネジ加工部が基体から外れるか否かを調べてみた。具体的には、超硬合金組成No.1〜7と同様の組成からなる基体と、純Ni材からなるネジ加工部とを具える試料を用意し、各試料のネジ加工部にM4の雌ネジ、M6の雌ネジ、M10の雌ネジを形成した(深さ15mm)。ネジ加工部は、上記と同様に直径φ12mm、長さ18.5mmのNi含有材料を用いた。そして、各雌ネジにそれぞれM4の雄ネジ、M6の雄ネジ、M10の雄ネジを捻じ込んでみたところ(深さ15mm)、いずれも雄ネジの方が捻じ切れてしまった。このときのトルク強度を測定したところ、M4では7N/mm2、M6では22N/mm2であった。M10のネジについては、トルク強度が45N/mm2を超えた時点で捻じ込みを中止した。これらのことから、本発明超硬合金材は、超硬合金からなる基体と、Ni含有材料からなるネジ加工部との接合強度に優れることがわかる。更にネジサイズを種々変えてみたところ、超硬合金からなる基体の大きさにもよるが、M20ぐらいまでの雌ネジを設けることができた。従って、本発明超硬合金材は、種々の加工装置本体の取り付けに充分対応できることが確認された。 Further, in the same manner as described above, a cemented carbide material having a threaded portion having a screw size different from that described above on a substrate made of a cemented carbide was produced. In the same manner as described above, it was examined whether or not the threaded portion was detached from the base. Specifically, a sample comprising a substrate having the same composition as the cemented carbide composition Nos. 1 to 7 and a threaded portion made of pure Ni material is prepared, and an M4 female is provided in the threaded portion of each sample. A screw, an M6 female screw, and an M10 female screw were formed (depth 15 mm). For the threaded portion, a Ni-containing material having a diameter of 12 mm and a length of 18.5 mm was used in the same manner as described above. Then, when M4 male screw, M6 male screw, and M10 male screw were screwed into each female screw (depth 15 mm), the male screw was cut off. When the torque intensity at this time was measured, it was 7 N / mm 2 for M4 and 22 N / mm 2 for M6. For the M10 screw, the screwing was stopped when the torque strength exceeded 45 N / mm 2 . From these facts, it can be understood that the cemented carbide material of the present invention is excellent in bonding strength between a substrate made of cemented carbide and a threaded portion made of a Ni-containing material. Furthermore, when the screw size was changed variously, depending on the size of the base made of cemented carbide, female screws up to about M20 could be provided. Therefore, it was confirmed that the cemented carbide material of the present invention can sufficiently cope with attachment of various processing apparatus main bodies.
ネジ加工部のネジを雄ネジに変えて、上記と同様に超硬合金材を作製してみた。具体的には、超硬合金組成No.1〜7と同様の組成からなる基体と、純Ni材からなるネジ加工部とを具える試料を用意し、各試料のネジ加工部に、M4の雄ネジ、M6の雄ネジ、M8の雄ネジ、M10の雄ネジを形成した。ネジ加工部には、いずれも直径φ12mm、長さ45mmのNi含有材料を用い、超硬合金からなる基体に15.0mm挿入し、基体表面から30.0mm突出させて配置して焼結した。そして、焼結後、各Ni含有材料に雄ネジ加工を施し、雄ネジ付きの超硬合金材を得ることができた。また、ネジサイズを種々変えてみたところ、超硬合金からなる基体の大きさにもよるがM3〜M20ぐらいまでの雄ネジを設けることができた。このことから本発明は、従来のように雌ネジだけでなく、雄ネジ付きの超硬合金材を提供できることが確認された。 By changing the screw of the threaded portion to a male screw, a cemented carbide material was produced in the same manner as described above. Specifically, a sample comprising a base body having the same composition as the cemented carbide composition No. 1 to 7 and a threaded portion made of pure Ni material is prepared, and the threaded portion of each sample is made of M4. A male screw, an M6 male screw, an M8 male screw, and an M10 male screw were formed. For the threaded portion, a Ni-containing material having a diameter of 12 mm and a length of 45 mm was used, and 15.0 mm was inserted into a base made of cemented carbide, and was projected 30.0 mm from the surface of the base and sintered. Then, after the sintering, each Ni-containing material was subjected to male screw processing to obtain a cemented carbide material with a male screw. In addition, when the screw size was changed variously, it was possible to provide male screws of about M3 to M20 depending on the size of the base made of cemented carbide. From this, it was confirmed that the present invention can provide a cemented carbide material with a male screw as well as a female screw as in the prior art.
本発明超硬合金材は、ネジが設けられる種々の加工材料に適用することができる。具体的には、パンチダイや抜き用金型などのプレス加工用材料、その他種々の金型材料や治具材料において、加工装置本体に取り付けるにあたり、雄ネジ又は雌ネジを利用する材料に好適である。 The cemented carbide material of the present invention can be applied to various processing materials provided with screws. Specifically, it is suitable for a material that uses a male screw or a female screw when attaching to a processing apparatus main body in a press working material such as a punch die or a punching die, and other various die materials and jig materials. .
1 超硬合金材 2 基体 3 ネジ加工部
1 Cemented
Claims (2)
前記基体に一体焼結されたネジ加工部とを有し、
前記ネジ加工部は、Niを50質量％以上含有するNi含有材料からなることを特徴とする超硬合金材。 A substrate made of cemented carbide;
A threaded portion integrally sintered with the substrate;
The cemented carbide material according to claim 1, wherein the threaded portion is made of a Ni-containing material containing Ni of 50 mass% or more.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009531172A (en) * | 2006-03-30 | 2009-09-03 | ワッカー ケミー アクチエンゲゼルシャフト | Apparatus and method for crushing coarsely crushed polycrystalline silicon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009531172A (en) * | 2006-03-30 | 2009-09-03 | ワッカー ケミー アクチエンゲゼルシャフト | Apparatus and method for crushing coarsely crushed polycrystalline silicon |
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