JPS6125537B2 - - Google Patents
Info
- Publication number
- JPS6125537B2 JPS6125537B2 JP9349682A JP9349682A JPS6125537B2 JP S6125537 B2 JPS6125537 B2 JP S6125537B2 JP 9349682 A JP9349682 A JP 9349682A JP 9349682 A JP9349682 A JP 9349682A JP S6125537 B2 JPS6125537 B2 JP S6125537B2
- Authority
- JP
- Japan
- Prior art keywords
- cemented carbide
- iron
- copper
- sintered body
- bonding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 150000002505 iron Chemical class 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Punching Or Piercing (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
【発明の詳細な説明】
本発明は、薄い超硬合金板と鋼材とを接合した
複合金型用素材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite mold material made by joining a thin cemented carbide plate and a steel material.
この金型用素材は精密部品の打抜き加工に使用
するダイス、パンチ等に応用されるものであり、
放電加工、ワイヤーカツト等によつて任意の形状
に加工して用いられるものである。 This mold material is applied to dies, punches, etc. used for punching precision parts.
It is used after being processed into any shape by electric discharge machining, wire cutting, etc.
かかる金型素材として超硬合金は優れた性能を
発揮するが高価であるため必要部分のみに超硬合
金を用い他は鋼材を用い両者を鑞付によつて接合
した複合素材が従来使用されている。しかしなが
らこのような素材は、金型用のような広い面積を
鑞付するため超硬合金と鋼の熱膨張係数の差によ
つて冷却時に超硬合金に引張応力が働き鑞付はず
れが生じたり、超硬合金に亀裂が生じるなどの問
題が多かつた。 Although cemented carbide exhibits excellent performance as a material for such molds, it is expensive, so conventionally a composite material has been used in which cemented carbide is used only for the necessary parts, steel is used for the rest, and the two are joined by brazing. There is. However, when using such materials, tensile stress is applied to the cemented carbide during cooling due to the difference in thermal expansion coefficient between the cemented carbide and steel, which may cause the solder to come off due to the large area being brazed, such as for molds. There were many problems such as cracks forming in the cemented carbide.
本発明の金型素材は上記の問題を解決するもの
であり、超硬合金と鋼を完全に接合されているた
め、接合後の鋼の焼入れ熱処理やワイヤーカツト
等による機械加工を行う際にも鋼と超硬合金との
外れや超硬合金の亀裂を生じない金型素材を提供
するものである。 The mold material of the present invention solves the above problem, and since the cemented carbide and steel are completely joined, it can be used even when performing quenching heat treatment of the steel after joining, machining by wire cutting, etc. The present invention provides a mold material that does not cause separation between steel and cemented carbide or cracks in cemented carbide.
本発明の金型素材は結合金属（主としてCo）
10重量％以上の超硬合金と銅溶浸した鉄系焼結体
からなる複合材であり、鉄系焼結体は炭素量0.3
％以上含む鉄粉の型押体（成型体）に銅を主成分
とする溶浸材を溶浸焼結したものであり、焼結時
に超硬合金に銅溶浸を介して同時に接合せしめた
ものである。そして、超硬合金の厚みは素材全体
の厚みの1/10〜1/3であることが特徴である。 The mold material of the present invention is a bonding metal (mainly Co)
It is a composite material consisting of 10% by weight or more of cemented carbide and an iron-based sintered body infiltrated with copper, and the iron-based sintered body has a carbon content of 0.3.
% or more of iron powder is infiltrated and sintered with an infiltration material mainly composed of copper, and is simultaneously bonded to cemented carbide through copper infiltration during sintering. It is something. The thickness of the cemented carbide is characterized by being 1/10 to 1/3 of the thickness of the entire material.
超硬合金中の結合金属が10％以下であると接合
後超硬合金にかかる引張応力に十分耐えられない
ので10％以上が好ましい。勿論超硬合金の主成分
はWCである。 If the bonding metal content in the cemented carbide is 10% or less, the cemented carbide will not be able to sufficiently withstand the tensile stress applied to the cemented carbide after joining, so it is preferably 10% or more. Of course, the main component of cemented carbide is WC.
本発明の複合金型素材の第２の特徴である超硬
合金の厚みが全体の1/10〜1/3である理由は1/10
以下では金型材としての圧縮強度が不十分であ
り、1/3以上では結合材10％以上の超硬合金でも
亀裂が発生するので好ましくない。通常の素材で
は超硬合金の厚みは１〜10mmのものが用いられ
る。 The reason why the thickness of the cemented carbide, which is the second feature of the composite mold material of the present invention, is 1/10 to 1/3 of the total is 1/10
If it is less than 1/3, the compressive strength as a mold material will be insufficient, and if it is more than 1/3, cracks will occur even if the cemented carbide has a binder content of 10% or more, which is not preferable. For ordinary materials, cemented carbide with a thickness of 1 to 10 mm is used.
第３の特徴は鋼材を鉄系金属粉末の型押体ある
いは焼結体に銅を主成分とする溶浸材を溶浸させ
た鋼材を接合させたことにある。 The third feature is that the steel material is joined to a stamped body or sintered body of iron-based metal powder infiltrated with an infiltrant material whose main component is copper.
金属粉末の型押体あるいは焼結体は多孔質であ
り、加熱昇温時の熱膨張の差を吸収することがで
き、また冷却時の応力は充填された銅により吸収
され超硬合金には大きな引張り応力が働かないと
いう効果がある。 The stamped or sintered body of metal powder is porous and can absorb the difference in thermal expansion when heated, and the stress during cooling is absorbed by the copper filled, making it difficult for cemented carbide. This has the effect of not applying large tensile stress.
本発明の第４の特徴は銅の溶浸と同時に超硬合
金と接合されることにある。鉄系型押体に銅主成
分の溶浸材を重ねて1120℃〜1150℃の温度で加熱
すると銅は溶融して、鉄系型押体の連続気孔を通
つて超硬合金に接し銅と反応接合する。そして超
硬合金とFe―Cu―Ｃ焼結体は銅を薄層を接合層
として強固に接合される。 The fourth feature of the present invention is that it is joined to the cemented carbide at the same time as the copper is infiltrated. When a copper-based infiltration material is layered on an iron-based stamped body and heated at a temperature of 1120°C to 1150°C, the copper melts and contacts the cemented carbide through the continuous pores of the iron-based stamped body, forming a bond with the copper. Reactive bonding. Then, the cemented carbide and the Fe--Cu--C sintered body are firmly joined using a thin layer of copper as a bonding layer.
第１図は本発明の金型素材の接合層附近の断面
を示す200倍拡大の顕微鏡写真であり、超硬合金
１は接合銅層２を介して鉄系焼結体３と強固に接
合されている。この界面の銅は接合時に生ずる応
力を解放する効果がある。 FIG. 1 is a 200 times enlarged micrograph showing a cross section near the bonding layer of the mold material of the present invention, showing that the cemented carbide 1 is firmly bonded to the iron-based sintered body 3 via the bonding copper layer 2. ing. Copper at this interface has the effect of releasing stress generated during bonding.
本発明の第５の特徴は、鉄系焼結体は炭素量が
0.3％以上であることである。炭素量が0.3％以下
では接合されたFe―Cu―Ｃ焼結体の硬度が低く
金型素材としては不適当である。0.3％以上であ
れば接合後の熱処理によつて任意の高硬度と靭性
を確保することができる。 The fifth feature of the present invention is that the iron-based sintered body has a low carbon content.
It must be 0.3% or more. If the carbon content is less than 0.3%, the joined Fe--Cu--C sintered body has low hardness and is unsuitable as a mold material. If it is 0.3% or more, desired high hardness and toughness can be ensured by heat treatment after bonding.
これらの本発明の金型素材は大きな面積の超硬
合金と鋼母材である受台との接合が可能である。
そして超精密抜型材として耐摩耗性、エツジ部の
刃立性の優れた金型素材として供することができ
る。 These mold materials of the present invention are capable of joining a large area of cemented carbide and a pedestal that is a steel base material.
It can also be used as an ultra-precision cutting die material with excellent wear resistance and edge sharpness.
次に実施例を示す。 Next, examples will be shown.
実施例
１μのWC粉末80重量％と１μのCo粉末20％を
混合し型押後焼結することにより100×100×２mm
の超硬合金板Ａを製造した。Example: 100×100×2mm by mixing 80% by weight of 1μ WC powder and 20% of 1μ Co powder, stamping and sintering.
Cemented carbide sheet A was manufactured.
次に鉄粉に0.8重量％の炭素を含む混合粉末を
100×100×40mmに型押しＢとする。又銅粉にMn5
％、Fe4％を混合した粉末を型押して100×100×
10mmの溶浸材Ｃを作製した。これを第２図に示す
様に重ね合わせ、アンモニア分解ガス中で1150℃
で１時間加熱した。 Next, a mixed powder containing 0.8% by weight of carbon is added to the iron powder.
Emboss B to 100 x 100 x 40 mm. Also Mn5 in copper powder
%, Fe4% mixed powder was stamped 100×100×
A 10 mm infiltration material C was prepared. These were stacked together as shown in Figure 2 and heated to 1150°C in ammonia decomposition gas.
It was heated for 1 hour.
加熱後、溶浸材は鉄の型押体中に溶浸拡散し、
超硬合金と完全な接合が行われており、第１図に
示す断面を示した。この時母材のFe―Cu―Ｃ合
金の硬度はHRc20であつた。この接合材を840℃
で１時間加熱後焼入れし、180℃×1.5時間で焼き
戻しを行つた後の硬度はHRc40であり、熱処理に
よつてはくり、亀裂は発生しなかつた。 After heating, the infiltrant is infiltrated and diffused into the iron stamping body,
Complete bonding with the cemented carbide was performed, and the cross section shown in FIG. 1 was shown. At this time, the hardness of the base metal Fe-Cu-C alloy was HRc20. This bonding material is heated to 840℃.
The hardness after heating for 1 hour at 180°C, quenching, and tempering at 180°C for 1.5 hours was HRc40, and no cracks were generated due to the heat treatment.
該接合品をワイヤーカツトによつて切り出し、
珪素鋼板の打抜き用パンチを製作し打抜きテスト
を行つたところ、ダイス鋼の約10倍の寿命を示し
た。また打抜き製品のバリが少く、製品の精度が
高いものが得られた。 Cut out the bonded product with a wire cut,
When we produced a punch for punching silicon steel plates and conducted punching tests, we found that it had a lifespan approximately 10 times longer than that of die steel. In addition, the punched products had fewer burrs and were highly accurate.
第１図は本発明品の接合状態を示す200倍拡大
顕微鏡写真、第２図は本発明品の製造法を説明す
るための図である。
１：超硬合金、２：銅層、３：鉄系焼結体、
Ａ：超硬合金、Ｂ：鉄系型押体、Ｃ：溶浸材。
FIG. 1 is a 200 times enlarged micrograph showing the bonded state of the product of the present invention, and FIG. 2 is a diagram for explaining the manufacturing method of the product of the present invention. 1: Cemented carbide, 2: Copper layer, 3: Iron-based sintered body,
A: Cemented carbide, B: Iron-based stamped body, C: Infiltration material.
Claims (1)
いて、超硬合金の結合金属が10重量％以上であ
り、かつその厚みが全体の厚みの1/10〜1/3であ
り、鉄系焼結体は炭素量0.3重量以上含む鉄系粉
末のスケルトンに銅を主成分とする溶浸材が充填
されており、超硬合金と鉄系焼結体とは溶浸材を
介して強固に接合されてなることを特徴とする金
型用素材。1 In a composite material of WC-based cemented carbide and iron-based sintered body, the bonding metal of the cemented carbide is 10% by weight or more, and its thickness is 1/10 to 1/3 of the total thickness, and the iron The iron-based sintered body is made of a skeleton of iron-based powder containing 0.3 weight or more of carbon and filled with an infiltrant material whose main component is copper. A mold material characterized by being bonded to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9349682A JPS58209557A (en) | 1982-05-31 | 1982-05-31 | Blank for die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9349682A JPS58209557A (en) | 1982-05-31 | 1982-05-31 | Blank for die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58209557A JPS58209557A (en) | 1983-12-06 |
| JPS6125537B2 true JPS6125537B2 (en) | 1986-06-16 |
Family
ID=14083950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9349682A Granted JPS58209557A (en) | 1982-05-31 | 1982-05-31 | Blank for die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58209557A (en) |
-
1982
- 1982-05-31 JP JP9349682A patent/JPS58209557A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58209557A (en) | 1983-12-06 |
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