JPS6132936B2 - - Google Patents
Info
- Publication number
- JPS6132936B2 JPS6132936B2 JP53142241A JP14224178A JPS6132936B2 JP S6132936 B2 JPS6132936 B2 JP S6132936B2 JP 53142241 A JP53142241 A JP 53142241A JP 14224178 A JP14224178 A JP 14224178A JP S6132936 B2 JPS6132936 B2 JP S6132936B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- meat grinder
- meat
- sintered body
- chromium
- 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
- 235000013372 meat Nutrition 0.000 claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 8
- 229910000734 martensite Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 150000001247 metal acetylides Chemical class 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000005245 sintering Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 229910001315 Tool steel Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 235000013330 chicken meat Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
本発明は耐摩耗焼結合金よりなる挽肉器用刃物
に関する。
従来の挽肉器用刃物を構成するカツターおよび
カツタープレートは各種工具鋼の機械加工品、銅
溶浸鉄系焼結品などを組合せて使用しているが、
たとえば第１図に示すようなカツタープレートを
工具鋼で製造する場合には多くの穴あけと外形を
形成する切削加工を必要とするとともに、所望の
耐摩耗性を得るために焼入れ焼もどしの熱処理
と、熱処理による変形を除去し平面度を出すた
め、仕上げに多くの平面研削を必要とする。又第
２図ａの平面図およびｂの側面図に示すカツター
の場合も精密鋳造によるとしてもやはり焼入れ焼
もどしの熱処理と、それにともなう変形除去のた
めの研削を必要とし、これが品質的にも経済的に
も隘路となつていた。一方たとえば銅溶浸鉄系焼
結品でカツタープレートおよびカツターを製造す
る場合にも、必要な耐摩耗性を得るために焼入れ
焼もどしの熱処理を要するほか、寸法安定性が悪
いため、所定の寸法精度、平面度などを出すため
に多くの仕上げ加工を必要とし、工具鋼の場合と
同様に品質的にも経済的にも障害となつていた。
又挽肉器用刃物のため牛肉、豚肉、とり肉、羊
肉、馬肉など各種の動物肉の切断押出しを行なう
ため、その際に発生する各種固体又は液体物質に
よる刃物の腐食があり、耐食性の面からも従来の
刃物では充分ではなかつた。
本発明は従来の刃物の機械加工を要する、熱処
理を必要とする、熱処理の変形除去のための多く
の研削を要する、耐食性も充分でないなどの品質
上あるいは多工程による価格上昇等の難点を除去
し簡単な工程で充分な耐摩耗性、耐食性、寿命な
どを有しかつ経済性でも優れた焼結合金を主体に
した挽肉器用刃物を提供することを目的とする。
本発明の挽肉器用刃物は、実質的にマルテンサ
イトの焼もどしにより生成した強靫な基地組織中
に金属炭化物および水蒸気処理により生成した金
属酸化物が分散してなる耐摩耗焼結合金を主体と
して構成されることを特徴とする。本発明の挽肉
器用刃物は鉄系焼結合金よりなり、好ましいもの
はクロム３〜10重量％、炭素0.5〜2.5重量％およ
び残りが実質的に鉄でなるものである。さらに本
発明挽肉器用刃物の特に好ましいものは重量％で
クロム３〜10％、炭素0.5〜2.5％およびモリブデ
ン0.3〜５％、バナジウム0.2〜1.5％、タングステ
ン0.3〜３％、ニツケル0.5〜５％、銅0.5〜５％を
単独又は複合で含有し、残りが実質的に鉄よりな
るものである。
本発明挽肉器用刃物は基地組織がマルテンサイ
トを焼もどし形成される硬さと靫性を合わせ偏え
るもので形成されるばかりでなく、基地組織中に
硬さの高い金属炭化物が分散しており、かつ水蒸
気処理により基地組織中の空孔部分に生成された
金属酸化物は特に耐焼付け性に優れ挽肉器用刃物
物としての耐摩耗性を向上させる。なお、この金
属酸化物は耐摩耗性を向上させるとともに基地組
織中の空孔を封じる役割を果たし、肉を切断する
際に発生する各種固体又は液体物質の吸蔵を防ぐ
効果をも有する。
本発明挽肉用刃物の好ましい基本的な態様は前
記のごとくクロム、炭素、鉄を所定成分で構成し
たものであり、この合金成分中クロムは焼結過程
において一部炭素と結合して炭化物を分散生成
し、他は基地に固溶して焼入性を高め、焼結後の
空冷で硬いマルテンサイトの生成を可能にすると
ともに、水蒸気処理時におけるマルテンサイト基
地の焼もどし軟化を遅滞させる効果をも有する。
この効果は３％未満では充分得られず、10％より
多く含有すると加工性を害し好ましくない。なお
実用上特に好ましい範囲は3.5〜８％である。炭
素は焼結過程でその一部がクロムと結合し炭化物
を分散生成し、他の部分は基地に固溶して焼結後
の空冷でマルテンサイトを生成する。この効果は
0.5％未満では充分でなく、2.5％を越えるを脆化
する。なお0.7〜２％が実用上好ましい範囲であ
る。
なおこの挽肉器用刃物にモリブテン、バナジウ
ム、タングステン、ニツケル、銅を単独または複
合で所定量添加したものはさらに好ましい。この
うちモリブデン、バナジウム、タングステンの一
部は焼結過程において炭化物中に入るとともに、
他の部分は基他に固溶し焼入性を高め、焼結後の
空冷でのマルテンサイトの生成に寄与するととも
に、水蒸気処理時におけるマルテンサイトの焼も
どし軟化を遅滞させる。これらはクロムと相俟ち
相互に複合添加された場合、特に著しい効果があ
る。
モリブデンは0.3％未満では充分な効果が得ら
れず、５％を越えるもそれに見合つた利点はな
く、バナジウムは0.2％未満では充分でなく、1.5
％を越えると焼入性を害し、タワグステンは0.3
％未満では充分でなく、３％を越えると靫性を損
ねる。又銅は基地の強さを高め、ニツケルは基地
の強さとともに靫性を高める効果を有するが、い
ずれも0.5％未満では効果が少なく、５％を越え
ると銅の場合刃物の寸法精度を低下させ、ニツケ
ルの場合硬さが低下する。
本発明の挽肉器用刃物は、たとえば次のような
方法により得られる。
前記のような所定の成分でなる原料粉末を配合
し、潤滑剤たとえばステアリン酸リチウムを添加
して混合し、たとえば第１図に示すごときカツタ
ープレートを成形する金型に均一に充填し４〜
6t／cm2程度の圧力で成形後、還元又は真空雰囲気
中で1100〜1300℃の温度範囲で焼結し、空冷程度
で冷却する。このようにして得られた焼結体を
550〜650℃、0.3〜１Kg／cm2の過熱水蒸気中で２
〜３時間処理して得られる。水蒸気処理後第１図
ｂの側面図の平面１１の平面度を出すため軽く研
削する。第２図のカツターの場合も側面図ｂに示
す平面２１の平面度を出すための軽い平面研削の
みでよい。本発明の挽肉器用刃物はカツタープレ
ートおよびカツターの両者とも本発明刃物材料で
構成するのが好ましいが、目的に応じそのいずれ
かを本発明刃物材料以外で構成してもよく、さら
にはカツタープレートおよびカツターの一部を本
発明品以外の材料で構成してもよい。
本発明の挽肉器用用刃物は複雑な形状のカツタ
ープレートおよびカツターを金型成形し焼結空冷
により得られるため、複雑な機械加工や焼入れ焼
もどしの熱処理を必要とせず、熱処理後の変形修
正のための研削も軽度ですむほか、被加工物の肉
類に対する耐摩耗性も従来の工具鋼又は銅溶浸鉄
系焼結品と較べて優れている。水蒸気処理による
緻密な酸化皮膜の形成による耐食性の向上がある
など品質的にも経済的にも極めて利点が多い。
以下実施例と比較例について説明する。
実施例と比較例
第１表に示す組成に原料粉末を配合し（Ｉは除
く）、潤滑剤としてステアリング酸リチウム0.75
％を添加してＶミキサーで20分混合後、5t／cm2の
圧力で第１図のカツタープレートおよび又は第２
図のカツターに成形した。ついで水素雰囲気中で
1200℃、40分程度焼結し、焼結炉の冷却部で冷却
した。こうして得られた焼結体を水蒸気処理を行
なうものでは0.5Kg／cm2、580℃の過熱水蒸気中で
２時間処理し、焼入れ処理をするものは、850℃
に30分保持したのち、油中に急冷し180℃で１時
間焼もどしを行なつた。なお焼結体以外のＩに対
する焼入れ焼もどしも同様に行なつた。
The present invention relates to a meat grinder cutter made of a wear-resistant sintered alloy. The cutters and cutter plates that make up the conventional meat grinder cutters are made of a combination of machined products of various tool steels, copper-infiltrated iron-based sintered products, etc.
For example, when a cutter plate like the one shown in Figure 1 is manufactured from tool steel, it requires many drilling operations and cutting operations to form the outer shape, as well as heat treatment such as quenching and tempering to obtain the desired wear resistance. In order to eliminate deformation caused by heat treatment and achieve flatness, many surface grinding operations are required for finishing. In addition, in the case of the cutter shown in the plan view in Figure 2a and the side view in Figure 2, even if it is made by precision casting, it still requires heat treatment of quenching and tempering and grinding to remove deformation, which makes it difficult to improve quality and economy. It also became a bottleneck. On the other hand, when manufacturing cutter plates and cutters using copper-infiltrated iron-based sintered products, for example, heat treatment of quenching and tempering is required to obtain the necessary wear resistance, and dimensional stability is poor. It requires a lot of finishing work to achieve dimensional accuracy and flatness, and as with tool steel, it has been an obstacle in terms of quality and economy. In addition, because the blades used in meat grinders are used to cut and extrude various animal meats such as beef, pork, chicken, mutton, and horse meat, the blades are corroded by various solid or liquid substances that are generated during the process. Conventional knives were not sufficient. The present invention eliminates the disadvantages of conventional blades, such as machining, heat treatment, a lot of grinding to remove deformation caused by heat treatment, insufficient corrosion resistance, and increased costs due to multiple steps. The purpose of the present invention is to provide a cutter for a meat grinder mainly made of a sintered alloy, which has sufficient wear resistance, corrosion resistance, service life, etc. through a simple process, and is also economical. The meat grinder knife of the present invention is mainly made of a wear-resistant sintered alloy in which metal carbides and metal oxides generated by steam treatment are dispersed in a strong matrix structure generated by tempering martensite. It is characterized by being configured. The meat grinder knife of the present invention is made of an iron-based sintered alloy, preferably 3 to 10% by weight of chromium, 0.5 to 2.5% by weight of carbon, and the remainder substantially iron. Particularly preferred blades for meat grinders of the present invention include, in weight percent, 3 to 10% chromium, 0.5 to 2.5% carbon, 0.3 to 5% molybdenum, 0.2 to 1.5% vanadium, 0.3 to 3% tungsten, 0.5 to 5% nickel; It contains 0.5 to 5% copper alone or in combination, and the remainder consists essentially of iron. The meat grinder cutter of the present invention not only has a base structure that balances the hardness and toughness formed by tempering martensite, but also has metal carbide with high hardness dispersed in the base structure, In addition, the metal oxides produced in the pores in the base structure by the steam treatment have particularly excellent seizure resistance and improve the wear resistance of the cutlery for a meat grinder. Note that this metal oxide not only improves wear resistance but also plays a role in sealing pores in the matrix structure, and also has the effect of preventing occlusion of various solid or liquid substances generated when cutting meat. A preferred basic embodiment of the meat grinding cutter of the present invention is one made of chromium, carbon, and iron as specified components as described above, and the chromium in this alloy component partially combines with carbon during the sintering process to disperse carbides. The others form a solid solution in the matrix to improve hardenability, enable the production of hard martensite by air cooling after sintering, and have the effect of retarding the tempering softening of the martensite matrix during steam treatment. It also has
This effect cannot be sufficiently obtained with a content of less than 3%, and a content of more than 10% impairs processability, which is undesirable. Note that a particularly preferable range for practical use is 3.5 to 8%. During the sintering process, part of the carbon combines with chromium to form dispersed carbides, while the other part dissolves in the matrix and forms martensite when air cooled after sintering. This effect is
Less than 0.5% is not sufficient, and more than 2.5% becomes brittle. Note that 0.7 to 2% is a practically preferable range. Further, it is more preferable to add a predetermined amount of molybdenum, vanadium, tungsten, nickel, and copper, singly or in combination, to the meat grinder blade. Among these, some of molybdenum, vanadium, and tungsten enter the carbide during the sintering process, and
The other parts form a solid solution with the base material to improve hardenability, contribute to the formation of martensite during air cooling after sintering, and retard the tempering and softening of martensite during steam treatment. When these are added in combination with chromium, they have a particularly remarkable effect. If molybdenum is less than 0.3%, sufficient effect cannot be obtained; if it exceeds 5%, there is no commensurate benefit; if vanadium is less than 0.2%, it is not sufficient;
If it exceeds 0.3%, the hardenability will be impaired, and Tawagusten is 0.3%.
If it is less than 3%, it is not sufficient, and if it exceeds 3%, the eyelids will be impaired. Copper also increases the strength of the base, and nickel has the effect of increasing the strength and toughness of the base, but if both are less than 0.5%, the effect is small, and if it exceeds 5%, the dimensional accuracy of the cutter will decrease. In the case of nickel, the hardness decreases. The meat grinder cutter of the present invention can be obtained, for example, by the following method. The raw material powder consisting of the predetermined components as described above is blended, a lubricant such as lithium stearate is added and mixed, and the mixture is uniformly filled into a mold for forming a cutter plate as shown in FIG.
After molding at a pressure of about 6t/cm 2 , it is sintered at a temperature range of 1100 to 1300°C in a reducing or vacuum atmosphere, and then cooled by air cooling. The sintered body obtained in this way
2 in superheated steam at 550-650℃, 0.3-1Kg/ cm2
Obtained after processing for ~3 hours. After steam treatment, light grinding is performed to obtain the flatness of the plane 11 shown in the side view of FIG. 1b. In the case of the cutter shown in FIG. 2, only light surface grinding is required to obtain the flatness of the plane 21 shown in side view b. In the meat grinder cutter of the present invention, both the cutter plate and the cutter are preferably made of the cutter material of the present invention, but depending on the purpose, either of them may be made of a cutter material other than the cutter material of the present invention. A portion of the plate and cutter may be made of materials other than those of the present invention. The cutter for a meat grinder of the present invention is obtained by molding a cutter plate and cutter with a complicated shape, sintering and air-cooling the cutter plate, and therefore does not require complicated machining or heat treatment such as quenching and tempering, and can correct deformation after heat treatment. Not only does it require light grinding, but it also has superior wear resistance to the meat of the workpiece compared to conventional tool steel or copper-infiltrated iron-based sintered products. It has many advantages in terms of quality and economy, such as improved corrosion resistance due to the formation of a dense oxide film through steam treatment. Examples and comparative examples will be described below. Examples and Comparative Examples The raw material powder was blended with the composition shown in Table 1 (excluding I), and 0.75% of lithium steering oxide was used as a lubricant.
% and mixed for 20 minutes with a V-mixer, then cutter plate shown in Figure 1 and or
It was formed into the cutter shown in the figure. Then in a hydrogen atmosphere
It was sintered at 1200°C for about 40 minutes and cooled in the cooling section of the sintering furnace. The sintered body obtained in this way is subjected to steam treatment at 0.5Kg/cm 2 , and when the sintered body is treated in superheated steam at 580℃ for 2 hours and quenched at 850℃
After holding for 30 minutes, it was rapidly cooled in oil and tempered at 180°C for 1 hour. Incidentally, quenching and tempering of I other than the sintered body was carried out in the same manner.
【表】
つぎに各処理を行なつたものにつき熱処理等に
よる変形を除去し組立てを容易にするため平面研
削を行ない、平面度、寸法などを検査ののち換肉
器に組立て、これに同一条件の羊肉を約５Kgの押
し力で押しながら連続投入し、10時間／日稼動し
10日後すなわち100時間の摩耗度を、その処理量
で比較した。各材料の組合せによる処理量の比較
を第２表に示す。[Table] Next, the products that have been subjected to each treatment are subjected to surface grinding to remove deformation caused by heat treatment, etc. and to facilitate assembly.After inspecting flatness, dimensions, etc., they are assembled into a meat exchanger. of mutton was continuously fed into the machine while pushing with a pushing force of approximately 5 kg, and the machine operated for 10 hours/day.
The degree of wear after 10 days or 100 hours was compared based on the throughput. Table 2 shows a comparison of the throughput of each material combination.
【表】
第２表の結果より本発明挽肉器用刃物は従来の
刃物と較べて処理量が多く優れた耐摩耗性、寿命
を有し、かつその製造工程が簡単であるなど、優
れた品質と経済性を有することが明らかである。[Table] From the results shown in Table 2, the meat grinder cutlery of the present invention has excellent quality, such as a larger throughput, superior wear resistance, and longer life than conventional cutters, as well as a simple manufacturing process. It is clear that it is economical.
第１図は本発明の挽肉器用刃物カツタープレー
トの一実施例、第２図は本発明の挽肉器用刃物カ
ツターの一実施例を示す図である。
１１，２１……研削面。
FIG. 1 shows an embodiment of a cutter plate for a meat grinder according to the present invention, and FIG. 2 shows an embodiment of the cutter plate for a meat grinder according to the present invention. 11, 21...Grinding surface.
Claims (1)
トを焼もどしてなる強靫な基地組織中に金属炭化
物および水蒸気処理により生成した金属酸化物が
分散してなる焼結体によりなることを特徴とする
挽肉器用器用刃物。 ２ 焼結体は重量パーセントでクロム３〜10％、
炭素0.5〜2.5％および残りが実質的に鉄からなる
組成を持つ特許請求の範囲第１項に記載の挽肉器
用刃物。 ３ 焼結体は重量パーセントでクロム３〜10％、
炭素0.5〜2.5％およびモリブテン0.3〜５％、バナ
ジウム0.2〜1.5％、タングステン0.3〜３％、ニツ
ケル0.5〜５％、銅0.5〜５％を単独又は複合で含
有し、残りが実質的に鉄からなる組成を持つ、特
許請求の範囲第１項に記載の挽肉器用刃物。[Scope of Claims] 1. A sintered body in which all or part of the cutlery is made of a strong base structure obtained by essentially tempering martensite, in which metal carbides and metal oxides produced by steam treatment are dispersed. A sharp knife for meat grinding. 2 The sintered body contains 3 to 10% chromium by weight,
The meat grinder cutter according to claim 1, having a composition of 0.5 to 2.5% carbon and the remainder substantially iron. 3 The sintered body contains 3 to 10% chromium by weight,
Contains 0.5 to 2.5% carbon, 0.3 to 5% molybdenum, 0.2 to 1.5% vanadium, 0.3 to 3% tungsten, 0.5 to 5% nickel, and 0.5 to 5% copper, singly or in combination, with the remainder substantially made of iron. A cutter for a meat grinder according to claim 1, having a composition as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14224178A JPS5568234A (en) | 1978-11-20 | 1978-11-20 | Knife for meat chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14224178A JPS5568234A (en) | 1978-11-20 | 1978-11-20 | Knife for meat chopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5568234A JPS5568234A (en) | 1980-05-22 |
| JPS6132936B2 true JPS6132936B2 (en) | 1986-07-30 |
Family
ID=15310710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14224178A Granted JPS5568234A (en) | 1978-11-20 | 1978-11-20 | Knife for meat chopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5568234A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008126035A (en) * | 2006-11-20 | 2008-06-05 | Yukio Kawaji | Strainer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5387912A (en) * | 1977-01-13 | 1978-08-02 | Toshiba Corp | Wear-resisting sintered alloy |
-
1978
- 1978-11-20 JP JP14224178A patent/JPS5568234A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5387912A (en) * | 1977-01-13 | 1978-08-02 | Toshiba Corp | Wear-resisting sintered alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5568234A (en) | 1980-05-22 |
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