JPH0273949A - Wear-resistant alloyed cast iron - Google Patents
Wear-resistant alloyed cast ironInfo
- Publication number
- JPH0273949A JPH0273949A JP22605588A JP22605588A JPH0273949A JP H0273949 A JPH0273949 A JP H0273949A JP 22605588 A JP22605588 A JP 22605588A JP 22605588 A JP22605588 A JP 22605588A JP H0273949 A JPH0273949 A JP H0273949A
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- wear
- alloyed cast
- hardness
- resistant
- 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.)
- Pending
Links
- 229910001018 Cast iron Inorganic materials 0.000 title abstract description 17
- 239000012535 impurity Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- JULDKEYYPIYHLQ-UHFFFAOYSA-N 3-hydroxy-2-[[2-[(3-hydroxy-4-oxopyran-2-yl)methyl-methylamino]ethyl-methylamino]methyl]pyran-4-one Chemical compound O1C=CC(=O)C(O)=C1CN(C)CCN(C)CC=1OC=CC(=O)C=1O JULDKEYYPIYHLQ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、製鉄、土木、セメント、鉱山等でライナー
や破砕機の打撃刃などの耐摩耗性を要求される機械、装
置の各種部品に用いられる耐摩耗合金鋳鉄に関するもの
である。[Detailed Description of the Invention] [Field of Industrial Application] This invention is applicable to various parts of machines and equipment that require wear resistance such as liners and impact blades of crushers in steel manufacturing, civil engineering, cement, mining, etc. This relates to the wear-resistant alloy cast iron used.
従来、高硬度の耐摩耗鋳鉄としては、２７Ｃｒ鋳鉄が知
られているが、その硬度は熱処理硬化してもＨＢ６５３
が上限である。Conventionally, 27Cr cast iron has been known as a highly hard and wear-resistant cast iron, but its hardness remains at HB653 even when hardened by heat treatment.
is the upper limit.
耐摩耗部品の寿命は、一般に硬度値に比例するといねれ
ており、部品の耐久性を向上させるにはより高い硬度が
望まれる。しかし、従来の２７Ｃｒ鋳鉄は、さらに硬度
を高めるためにＣ，Ｃｒ等を高めると機械強度が低下し
、耐摩耗部品として使用すると割れ、破損を生しやすく
なるという問題がある。The lifespan of wear-resistant parts is generally said to be proportional to the hardness value, and higher hardness is desired to improve the durability of the parts. However, conventional 27Cr cast iron has a problem in that when C, Cr, etc. are increased to further increase hardness, the mechanical strength decreases, and when used as wear-resistant parts, it becomes prone to cracking and damage.
この発明は、このような問題を解決するものであって、
機械強度を損なうことなく硬度を亮＜シ、耐摩耗性を向
上させる耐摩耗合金鋳鉄を提供することを目的とする。This invention solves these problems,
The purpose of the present invention is to provide a wear-resistant cast iron alloy that has increased hardness and wear resistance without impairing mechanical strength.
上記課題を解決するため、この発明の耐摩耗合金鋳鉄は
、Ｃ２，０〜３．０％、Ｓｉ０．３〜１．０％。In order to solve the above problems, the wear-resistant cast iron alloy of the present invention contains C20 to 3.0% and Si 0.3 to 1.0%.
Ｍｎ０．３〜１．０％、Ｃｒ２０〜３０％、ＭＯ０，８
〜２．０％、Ｔｉ０．４％以下、８０．２％以下、残部
をＦｅおよび不可避不純物で構成している。Mn0.3-1.0%, Cr20-30%, MO0.8
~2.0%, Ti 0.4% or less, 80.2% or less, and the balance is composed of Fe and unavoidable impurities.
この発明の耐摩耗合金鋳鉄は、Ｍｏ、Ｔｉ、Ｂ等の添加
によって基地組織を制御することにより、焼入性を向上
させ、結晶粒の微細化を促進し、機械強度を損なうこと
なく高い硬度と優れた耐摩耗性を得る。The wear-resistant alloy cast iron of this invention improves hardenability and promotes grain refinement by controlling the base structure by adding Mo, Ti, B, etc., and has high hardness without sacrificing mechanical strength. and excellent wear resistance.
以下、この発明の耐摩耗合金鋳鉄を構成する各元素の作
用について説明する。Hereinafter, the effects of each element constituting the wear-resistant cast iron alloy of the present invention will be explained.
Ｃ−Ｃは炭化物を形成する主要元素であり、２．０％以
下では晶出炭化物も少な（、十分な硬度が得られず、ま
た、３．０％越えると過共晶炭化物が生成し脆弱となる
ため、２．０〜３．０％としている。C-C is a main element that forms carbides, and if it is less than 2.0%, there will be few carbides crystallized (sufficient hardness cannot be obtained, and if it exceeds 3.0%, hypereutectic carbide will be formed and it will become brittle). Therefore, it is set at 2.0 to 3.0%.
Ｓｉ： Ｓｉは脱酸に必要な元素であり、０．３％以
下では効果が少なく、１．０％を越えると脆化を助長す
るので、０．３〜１．０％としている。Si: Si is an element necessary for deoxidation, and if it is less than 0.3%, it will have little effect, and if it exceeds 1.0%, it will promote embrittlement, so it is set at 0.3 to 1.0%.
Ｍｎ： ＭｎもＳｉと同様の働きを示し、０．３％以
下では効果が少なく、１．０％を越えると割れや機械強
度の低下原因となるため、０．３〜１．０％としている
。Mn: Mn also works in the same way as Si, and if it is less than 0.3%, it will have little effect, and if it exceeds 1.0%, it will cause cracking or a decrease in mechanical strength, so it is set at 0.3 to 1.0%. .
Ｃｒ： Ｃｒはマトリックス内にＣｒ炭化物（Ｃｒｔ
Ｃ：＋）を生成するために添加するもので、Ｃｒ２０％
以下では炭化物生成量が少なく高硬度が得られない。ま
た、３０％を越えるとＣ量の範囲から過共晶組成となり
強度が低下する。よってＣｒ含量は耐摩耗と靭性を向上
させるため、共晶組成範囲付近、即ち２０〜３０％とし
ている。Cr: Cr contains Cr carbide (Crt
Added to generate C:+), Cr20%
Below that, the amount of carbide produced is small and high hardness cannot be obtained. Moreover, if it exceeds 30%, a hypereutectic composition occurs due to the C content range, and the strength decreases. Therefore, in order to improve wear resistance and toughness, the Cr content is set near the eutectic composition range, that is, 20 to 30%.
Ｍｏ：Ｍｏは主として初晶のｃｒ７ｃ：１炭化物を強化
し、マトリックスを改善するもので、Ｃｒ炭化物中に複
合物を作り、パーライト生成を抑制し、均一なマルテン
（ノーイトを形成して靭性と耐摩耗性を向上させる。０
．８％以下では効果が少なく、２．０％を越える添加は
経済的でないため０．８〜２．０％、としている。Mo: Mo mainly strengthens the primary cr7c:1 carbide and improves the matrix. It forms a composite in the Cr carbide, suppresses pearlite formation, and forms uniform malten (noite) to improve toughness and resistance. Improves wear resistance.0
．． If it is less than 8%, the effect is small, and if it exceeds 2.0%, it is not economical, so it is set at 0.8 to 2.0%.
Ｔｉ：Ｔｉは結晶粒の微細化により機械強度と耐摩耗性
の向上に寄与するものであるが、０．４％を越える添加
では効果は変わらず経済的でないため、０．４％以下と
している。Ti: Ti contributes to improving mechanical strength and wear resistance by making crystal grains finer, but if it is added in excess of 0.4%, the effect remains unchanged and it is not economical, so it is limited to 0.4% or less. .
Ｂ： Ｂは焼入性の向上による硬度上昇と、７トリノク
スの微細化のため添加するが、０，２％を越えると強度
上好ましくないため、０．２％以下としている。B: B is added to increase hardness by improving hardenability and to make the 7-trinox finer, but if it exceeds 0.2%, it is unfavorable in terms of strength, so it is limited to 0.2% or less.
〔実施例］
第１表、第２表にこの発明の耐摩耗合金鋳鉄の実施例の
化学組成と機械的性質を示す。[Example] Tables 1 and 2 show the chemical composition and mechanical properties of examples of the wear-resistant alloy cast iron of the present invention.
実施条件は、ＪＩＳＺ２２０］、８Ｂの供試材と１、Ｊ
Ｉ Ｓ Ｚ ２２０２．４号片（ノツチレス）による
もので、鋳造後１０５０”Ｃの熱処理を施し、確性テス
トを行った。The implementation conditions were JIS Z220], 8B test material and 1, J
The piece was made of IS Z 2202.4 piece (Knotless), and after casting, it was heat treated at 1050''C and tested for accuracy.
比較材は２１Ｃｒ鋳鉄である。The comparative material is 21Cr cast iron.
第１表 第２表 注：衝撃強さはノツチレスによる。Table 1 Table 2 Note: Impact strength is based on Notuchiless.
第３表はこの発明の耐摩耗合金鋳鉄と従来の２７Ｃｒ鋳
鉄とのミル摩耗試験におＬＪる耐摩耗係数を対比して示
している。Table 3 shows a comparison of the wear resistance coefficients of the wear-resistant alloy cast iron of the present invention and conventional 27Cr cast iron in the mill wear test.
実施条件は次のとおり。The implementation conditions are as follows.
ＴＰ寸法 １３ΦＸ ８０ ｍｍ
ミル回転数 ８５０ｒｐｍ
温度 常温
第３表
〔発明の効果〕
この発明の耐摩耗合金鋳鉄は、上記の如くであるので、
機械強度を損なうことなく硬度を高くし、耐摩耗性を向
−１ニさせる。TP dimensions: 13ΦX 80 mm Mill rotation speed: 850 rpm Temperature: Room temperature Table 3 [Effects of the Invention] The wear-resistant alloy cast iron of the present invention is as described above.
To increase hardness and improve wear resistance without sacrificing mechanical strength.
Claims (1)
３〜１．０％、Ｃｒ２０〜３０％、Ｍｏ０．８〜２．０
％、Ｔｉ０．４％以下、Ｂ０．２％以下、残部がＦｅお
よび不可避不純物からなる耐摩耗合金鋳鉄。C2.0-3.0%, Si0.3-1.0%, Mn0.
3-1.0%, Cr20-30%, Mo0.8-2.0
%, Ti 0.4% or less, B 0.2% or less, and the balance is Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22605588A JPH0273949A (en) | 1988-09-09 | 1988-09-09 | Wear-resistant alloyed cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22605588A JPH0273949A (en) | 1988-09-09 | 1988-09-09 | Wear-resistant alloyed cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0273949A true JPH0273949A (en) | 1990-03-13 |
Family
ID=16839090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22605588A Pending JPH0273949A (en) | 1988-09-09 | 1988-09-09 | Wear-resistant alloyed cast iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0273949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320149C (en) * | 2005-09-05 | 2007-06-06 | 黄若 | Chromium molybdenum titanium alloy cast iron and its uses |
| CN106086696A (en) * | 2016-08-22 | 2016-11-09 | 合肥东方节能科技股份有限公司 | A kind of energetic ion slitting wheel alloy material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49101217A (en) * | 1973-02-02 | 1974-09-25 | ||
| JPS52103311A (en) * | 1976-02-27 | 1977-08-30 | Riken Piston Ring Ind Co Ltd | Cylinder liner for sludge punp |
| JPS54158324A (en) * | 1978-06-06 | 1979-12-14 | Daido Steel Co Ltd | Crushing teeth for food processing |
-
1988
- 1988-09-09 JP JP22605588A patent/JPH0273949A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49101217A (en) * | 1973-02-02 | 1974-09-25 | ||
| JPS52103311A (en) * | 1976-02-27 | 1977-08-30 | Riken Piston Ring Ind Co Ltd | Cylinder liner for sludge punp |
| JPS54158324A (en) * | 1978-06-06 | 1979-12-14 | Daido Steel Co Ltd | Crushing teeth for food processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320149C (en) * | 2005-09-05 | 2007-06-06 | 黄若 | Chromium molybdenum titanium alloy cast iron and its uses |
| CN106086696A (en) * | 2016-08-22 | 2016-11-09 | 合肥东方节能科技股份有限公司 | A kind of energetic ion slitting wheel alloy material and preparation method thereof |
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