JPH04228536A - Steel excellent in wear resistance - Google Patents
Steel excellent in wear resistanceInfo
- Publication number
- JPH04228536A JPH04228536A JP13953791A JP13953791A JPH04228536A JP H04228536 A JPH04228536 A JP H04228536A JP 13953791 A JP13953791 A JP 13953791A JP 13953791 A JP13953791 A JP 13953791A JP H04228536 A JPH04228536 A JP H04228536A
- Authority
- JP
- Japan
- Prior art keywords
- wear resistance
- steel
- present
- hardness
- wear
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 229910052796 boron Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000005275 alloying Methods 0.000 description 6
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000005496 tempering Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、建設、土木、鉱山等
の分野で使用される産業機械、部品、運搬機器（パワ−
ショベル、ブルト−ザ−、ホッパ−、バケット等）等に
用いられる耐摩耗鋼に関する。[Industrial Field of Application] This invention is applicable to industrial machinery, parts, and transportation equipment (power
It relates to wear-resistant steel used in shovels, bulldozers, hoppers, buckets, etc.
【０００２】0002
【従来の技術】建設、土木等の分野で使用される産業機
械、部品、運搬機器（パワ−ショベル、ブルト−ザ−、
ホッパ−、バケット等）等には、それらの機械、機器、
部品等の寿命を確保するため、耐摩耗性に優れた鋼が用
いられる。鋼の耐摩耗性は、鋼の硬度を高くすることに
より向上することから、従来、Ｃｒ、Ｍｏ等の合金元素
を大量に添加した合金鋼に焼入等の熱処理を加えて製造
される高硬度鋼が使用されてきた。[Prior Art] Industrial machines, parts, and transportation equipment (power shovels, bulldozers, etc.) used in fields such as construction and civil engineering.
hoppers, buckets, etc.), those machines, equipment, etc.
To ensure the longevity of parts, etc., steel with excellent wear resistance is used. The wear resistance of steel can be improved by increasing the hardness of the steel. Conventionally, high-hardness steel is manufactured by adding a large amount of alloying elements such as Cr and Mo to alloy steel and subjecting it to heat treatment such as quenching. steel has been used.
【０００３】従来、高硬度を確保する耐摩耗鋼の製造に
関して、特開昭６２−１４２７２６号、特開昭６３−１
６９３５９号、特開平１−１４２０２３号等が提案され
ている。これらの技術は、常温の硬度（ＨＢ等）が約３
００以上で、それぞれ溶接性、靭性、曲げ加工性等を改
善しようとするものであり、高硬度を達成することで耐
摩耗性を向上させることを目的としている。[0003] Conventionally, regarding the production of wear-resistant steel that ensures high hardness, Japanese Patent Application Laid-Open No. 62-142726 and Japanese Patent Application Laid-Open No. 63-1
No. 69359, Japanese Unexamined Patent Publication No. 1-142023, etc. have been proposed. These technologies have a hardness (HB etc.) of about 3 at room temperature.
00 or higher, each of which aims to improve weldability, toughness, bending workability, etc., and aims to improve wear resistance by achieving high hardness.
【０００４】しかしながら、近年の耐摩耗鋼に要求され
る耐摩耗性は、より一層厳しくなっており、従来のよう
に単に硬度を高めるという方法では、本質的な耐摩耗性
の改善は図り得ない。すなわち、このような従来の技術
の延長上で硬度を顕著に高めると、結果的に溶接性、加
工性が劣化し、また高合金化のためにコストが極めて高
くなる。したがって、実用鋼において耐摩耗性を向上さ
せるために硬度を著しく高めることは、実用上は困難で
あることが予想される。[0004] However, the wear resistance required of wear-resistant steel in recent years has become even more severe, and the conventional method of simply increasing hardness cannot achieve essential improvements in wear resistance. . That is, if the hardness is significantly increased as an extension of such conventional technology, weldability and workability will deteriorate as a result, and the cost will become extremely high due to high alloying. Therefore, it is expected that it would be practically difficult to significantly increase the hardness of practical steel in order to improve its wear resistance.
【０００５】本発明は、このような従来の耐摩耗鋼とは
全く異なる観点からなされたもので、硬度を著しく上昇
させることなく、優れた耐摩耗性が得られる耐摩耗鋼を
提供するものである。The present invention was made from a completely different perspective from such conventional wear-resistant steels, and aims to provide wear-resistant steels that can provide excellent wear resistance without significantly increasing hardness. be.
【０００６】[0006]
【課題を解決するための手段】上述のような従来の問題
を解決するために、本発明者らは、耐摩耗性に及ぼす合
金元素の影響について鋭意検討を行い、その結果、硬度
を上昇させることなく優れた耐摩耗性を有する鋼を見出
した。このような本発明の特徴は以下のとおりである。[Means for Solving the Problems] In order to solve the conventional problems as described above, the present inventors have conducted extensive studies on the influence of alloying elements on wear resistance, and as a result, the present inventors have conducted a study on the influence of alloying elements on wear resistance. We have discovered a steel that has excellent wear resistance without any damage. The features of the present invention are as follows.
【０００７】（１） Ｃ：０．０５〜０．４５ｗｔ％
、Ｓｉ：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０
ｗｔ％、Ｔｉ：０．０５〜１．５ｗｔ％、残部Ｆｅおよ
び不可避的不純物からなる耐摩耗性に優れた鋼。(1) C: 0.05-0.45wt%
, Si: 0.1 to 1.0 wt%, Mn: 0.1 to 2.0
wt%, Ti: 0.05 to 1.5 wt%, balance Fe and unavoidable impurities. Steel with excellent wear resistance.
【０００８】（２） Ｃ：０．０５〜０．４５ｗｔ％
、Ｓｉ：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０
ｗｔ％、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これ
にＣｕ：０．１〜２．０ｗｔ％、Ｎｉ：０．１〜１０．
０ｗｔ％、Ｃｒ：０．１〜３．０ｗｔ％、Ｍｏ：０．１
〜３．０ｗｔ％、Ｂ：０．０００３〜０．０１ｗｔ％の
うちの１種または２種以上の元素を含有し、残部Ｆｅお
よび不可避的不純物からなる耐摩耗性に優れた鋼。(2) C: 0.05-0.45wt%
, Si: 0.1 to 1.0 wt%, Mn: 0.1 to 2.0
wt%, Ti: 0.05-1.5 wt%, Cu: 0.1-2.0 wt%, Ni: 0.1-10.
0wt%, Cr: 0.1-3.0wt%, Mo: 0.1
-3.0 wt%, B: 0.0003 to 0.01 wt%, and the balance is Fe and inevitable impurities. A steel with excellent wear resistance.
【０００９】（３） Ｃ：０．０５〜０．４５ｗｔ％
、Ｓｉ：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０
ｗｔ％、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これ
にＮｂ：０．００５〜０．５ｗｔ％、Ｖ：０．０１〜０
．５ｗｔ％のうちの１種または２種の元素を含有し、残
部Ｆｅおよび不可避的不純物からなる耐摩耗性に優れた
鋼。(3) C: 0.05-0.45wt%
, Si: 0.1 to 1.0 wt%, Mn: 0.1 to 2.0
wt%, Ti: 0.05-1.5 wt%, Nb: 0.005-0.5 wt%, V: 0.01-0
．． Steel with excellent wear resistance, containing 5 wt% of one or two elements, with the balance being Fe and unavoidable impurities.
【００１０】（４） Ｃ：０．０５〜０．４５ｗｔ％
、Ｓｉ：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０
ｗｔ％、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これ
にＣｕ：０．１〜２．０ｗｔ％、Ｎｉ：０．１〜１０．
０ｗｔ％、Ｃｒ：０．１〜３．０ｗｔ％、Ｍｏ：０．１
〜３．０ｗｔ％、Ｂ：０．０００３〜０．０１ｗｔ％の
うちの１種または２種以上の元素と、Ｎｂ：０．００５
〜０．５ｗｔ％、Ｖ：０．０１〜０．５ｗｔ％のうちの
１種または２種の元素とを含有し、残部Ｆｅおよび不可
避的不純物からなる耐摩耗性に優れた鋼。(4) C: 0.05-0.45wt%
, Si: 0.1 to 1.0 wt%, Mn: 0.1 to 2.0
wt%, Ti: 0.05-1.5 wt%, Cu: 0.1-2.0 wt%, Ni: 0.1-10.
0wt%, Cr: 0.1-3.0wt%, Mo: 0.1
~3.0 wt%, B: 0.0003 ~ 0.01 wt% of one or more elements, and Nb: 0.005
-0.5wt%, V: 0.01-0.5wt%, and one or two types of elements, and the balance is Fe and inevitable impurities, and has excellent wear resistance.
【００１１】[0011]
【作用】以下、本発明の詳細をその限定理由とともに説
明する。本発明の最大の特徴は、耐摩耗性を向上させる
ために、硬質のＴｉＣを有効に活用する点にある。すな
わち、本発明では従来の耐摩耗鋼のように、鋼の組織を
硬質のマルテンサイト主体にすることで硬度を上昇させ
る必要がない。[Operation] The details of the present invention will be explained below along with the reasons for its limitations. The greatest feature of the present invention is that hard TiC is effectively utilized to improve wear resistance. That is, in the present invention, unlike conventional wear-resistant steels, there is no need to increase the hardness by making the steel structure mainly composed of hard martensite.
【００１２】従来の耐摩耗鋼においては、Ｔｉ添加の目
的は主として、焼入れ性に有効な固溶Ｂを確保するため
に、Ｂと結合しやすいＮをＴｉＮとして固定するためで
あり、その添加量はせいぜい０．０２ｗｔ％程度以下で
ある。また、一般に大量のＴｉ添加は、製鋼段階での酸
化の問題や、鋳造段階でのノズルの詰り、酸化防止パウ
ダ−との反応等の問題があるため、添加量は制限されて
きた。このため、従来ではＴｉの大量添加による効果は
全く不明であったといえる。In conventional wear-resistant steel, the purpose of adding Ti is mainly to fix N, which easily combines with B, as TiN in order to secure solid solution B that is effective for hardenability. is about 0.02 wt% or less at most. Furthermore, the addition amount of Ti has generally been limited because there are problems such as oxidation during the steel manufacturing stage, nozzle clogging during the casting stage, and reaction with anti-oxidation powder. For this reason, it can be said that the effect of adding a large amount of Ti has been completely unknown in the past.
【００１３】本発明者らは詳細な検討の結果、このよう
な従来の常識を超える大量のＴｉ添加により、耐摩耗性
を改善できることを見出した。図１にＴｉ添加量と耐摩
耗比（軟鋼の耐摩耗性を１．０としたときの試験材の耐
摩耗性の比率：耐摩耗比が大きい方が耐摩耗性が良好で
あることを示す）との関係を示す。これによれば、Ｔｉ
は０．０５ｗｔ％以上の添加で耐摩耗性を向上させるこ
とが明かである。Ｔｉ添加による耐摩耗性の向上は、Ｔ
ｉが約０．５ｗｔ％まで直線的に上昇し、１．５ｗｔ％
程度で軟鋼の約１０倍の耐摩耗性を示す。そして、この
場合硬度（ＨＢ）は上昇しておらず、すべてＨＢ≦約５
００である。As a result of detailed studies, the present inventors found that the wear resistance can be improved by adding a large amount of Ti, which exceeds the conventional wisdom. Figure 1 shows the amount of Ti added and the wear resistance ratio (the ratio of the wear resistance of the test material when the wear resistance of mild steel is 1.0: the larger the wear resistance ratio, the better the wear resistance. ). According to this, Ti
It is clear that addition of 0.05 wt% or more improves wear resistance. The improvement in wear resistance due to the addition of Ti is due to the addition of Ti.
i increases linearly to about 0.5 wt%, and 1.5 wt%
The wear resistance is about 10 times that of mild steel. In this case, the hardness (HB) has not increased, and in all cases HB≦about 5
It is 00.
【００１４】以下、本発明の鋼成分の限定理由について
説明する。Ｃは、ＴｉＣを形成させるために必須の元素
であるとともに、鋼の硬度も高める効果がある。しかし
、Ｃを大量に添加すると、溶接性、加工性等を劣化させ
るため、上限を０．４５ｗｔ％とした。また、下限につ
いては、ＴｉＣの効果を発揮させるために必要な最低限
の量として０．０５ｗｔ％とした。Ｓｉは脱酸元素とし
て有効な元素であり、このため０．１ｗｔ％以上の添加
が必要である。また、Ｓｉは固溶強化に対しても有効な
元素であるが、１．０ｗｔ％を超える添加量では、延靭
性が低下したり、介在物が増加する等の問題がある。
以上の点から、Ｓｉは０．１〜１．０ｗｔ％の範囲とし
た。[0014] The reasons for limiting the steel components of the present invention will be explained below. C is an essential element for forming TiC, and also has the effect of increasing the hardness of steel. However, since adding a large amount of C deteriorates weldability, workability, etc., the upper limit was set at 0.45 wt%. Furthermore, the lower limit was set at 0.05 wt% as the minimum amount necessary to exhibit the effect of TiC. Si is an effective element as a deoxidizing element, and therefore needs to be added in an amount of 0.1 wt% or more. Further, although Si is an effective element for solid solution strengthening, if the amount added exceeds 1.0 wt%, there are problems such as a decrease in ductility and an increase in inclusions. From the above points, Si was set in the range of 0.1 to 1.0 wt%.
【００１５】Ｍｎは焼入れ性を確保するために有効な元
素であり、０．１ｗｔ％以上の添加が必要であるが、２
．０ｗｔ％を超える添加量では溶接性が劣化するため、
０．１〜２．０ｗｔ％の範囲とした。Ｔｉは、本発明に
おいてＣとともに最も重要な元素であり、安定して大量
のＴｉＣを生成させるためには、０．０５ｗｔ％以上の
添加が必要である。また、１．５ｗｔ％を超える添加量
でも耐摩耗性は良好であるが、コストが上昇するととも
に、溶接性、加工性が低下する。このため、Ｔｉは０．
０５〜１．５ｗｔ％の範囲とする。Mn is an effective element for ensuring hardenability, and it is necessary to add 0.1 wt% or more.
．． If the amount added exceeds 0 wt%, weldability deteriorates, so
It was made into the range of 0.1-2.0wt%. Ti is the most important element along with C in the present invention, and in order to stably generate a large amount of TiC, it is necessary to add 0.05 wt% or more. Further, even if the amount exceeds 1.5 wt%, the wear resistance is good, but the cost increases and weldability and workability decrease. Therefore, Ti is 0.
The range is 05 to 1.5 wt%.
【００１６】本発明では、以上の基本成分に加え、焼入
れ性を高めるためＣｕ、Ｎｉ、Ｃｒ、Ｍｏ、Ｂのうちの
１種または２種以上の元素を、また析出強化を図るため
Ｎｂ、Ｖのうちの１種または２種の元素を、それぞれ任
意に含有させることができる。In the present invention, in addition to the above basic components, one or more elements of Cu, Ni, Cr, Mo, and B are added to improve hardenability, and Nb and V are added to improve precipitation strengthening. One or two of these elements may be contained as desired.
【００１７】Ｃｕは焼入れ性を高める元素であり、目的
に応じて硬度を制御するために有効な元素であるが、０
．１ｗｔ％未満ではこの効果を発揮することができず、
一方、２．０ｗｔ％を超える添加では、熱間加工性が低
下するとともに、コストも上昇するので、０．１〜２．
０ｗｔ％の範囲とする。Ｎｉは焼入れ性を高めるととも
に、低温靭性を向上させる元素であるが、０．１ｗｔ％
未満ではこの効果を発揮させることができず、一方、１
０．０ｗｔ％を超える添加では、コスト上昇が著しいの
で、０．１〜１０．０ｗｔ％の範囲とする。[0017]Cu is an element that improves hardenability and is an effective element for controlling hardness depending on the purpose.
．． If it is less than 1wt%, this effect cannot be exhibited,
On the other hand, if the addition exceeds 2.0 wt%, hot workability will decrease and the cost will increase, so the addition of 0.1 to 2.0 wt.
The range is 0wt%. Ni is an element that improves hardenability and low-temperature toughness, but at 0.1 wt%
If it is less than 1, this effect cannot be exhibited;
Addition of more than 0.0 wt% causes a significant increase in cost, so the range is set from 0.1 to 10.0 wt%.
【００１８】Ｃｒは焼入れ性を高める元素であるが、０
．１ｗｔ％未満ではこの効果を発揮することができず、
一方、３．０ｗｔ％を超える添加では、溶接性が劣化す
るとともに、コストが上昇するので、０．１〜３．０ｗ
ｔ％の範囲とする。Ｍｏは焼入れ性を高める元素である
が、０．１ｗｔ％未満ではこの効果を発揮することがで
きず、一方、３．０ｗｔ％を超える添加では、溶接性が
劣化するとともに、コストが上昇するので、０．１〜３
．０ｗｔ％の範囲とする。Ｂは微量添加で焼入れ性を高
める元素であるが、０．０００３ｗｔ％未満ではこの効
果を発揮することができず、一方、０．０１ｗｔ％を超
える添加では、溶接性が劣化するとともに、却って焼入
れ性が低下するので、０．０００３〜０．０１ｗｔ％の
範囲とする。Cr is an element that improves hardenability, but 0
．． If it is less than 1wt%, this effect cannot be exhibited,
On the other hand, if the addition exceeds 3.0wt%, weldability deteriorates and the cost increases, so 0.1 to 3.0w
The range is t%. Mo is an element that improves hardenability, but if it is less than 0.1 wt%, it cannot exhibit this effect, while if it is added in excess of 3.0 wt%, weldability deteriorates and costs increase. ,0.1~3
．． The range is 0wt%. B is an element that improves hardenability when added in small amounts, but if it is less than 0.0003 wt%, this effect cannot be achieved, while if it is added in excess of 0.01 wt%, weldability deteriorates and the hardenability is increased. Since the properties are lowered, the content is set in the range of 0.0003 to 0.01 wt%.
【００１９】Ｎｂは析出強化に有効な元素であり、目的
に応じて鋼の硬度を制御できる作用があるが、０．００
５ｗｔ％未満ではこの効果を発揮することができず、一
方、０．５ｗｔ％を超える添加では溶接性が劣化するの
で、０．００５〜０．５ｗｔ％の範囲とする。Ｖは析出
強化に有効な元素であり、目的に応じて鋼の硬度を制御
できる作用があるが、０．０１ｗｔ％未満ではこの効果
を発揮することができず、一方、０．５ｗｔ％を超える
添加では溶接性が劣化するので、０．０１〜０．５ｗｔ
％の範囲とする。なお、本発明においては、加工方法、
熱処理方法等に関して何ら規定する必要がなく、焼入処
理、焼戻処理、時効処理、応力除去焼鈍等の熱処理を実
施しても、本発明の目的を何ら損なうものではない。[0019] Nb is an effective element for precipitation strengthening, and has the effect of controlling the hardness of steel depending on the purpose.
If less than 5 wt%, this effect cannot be exhibited, while if more than 0.5 wt%, weldability deteriorates, so the content is set in the range of 0.005 to 0.5 wt%. V is an effective element for precipitation strengthening and has the effect of controlling the hardness of steel depending on the purpose, but if it is less than 0.01 wt%, it cannot exhibit this effect, while if it exceeds 0.5 wt% Addition of 0.01 to 0.5wt deteriorates weldability.
% range. In addition, in the present invention, the processing method,
There is no need to specify any heat treatment method, etc., and even if heat treatments such as quenching treatment, tempering treatment, aging treatment, stress relief annealing, etc. are performed, the object of the present invention will not be impaired in any way.
【００２０】[0020]
【実施例】表１および表２に供試鋼の化学成分を示す。
鋼Ａ〜Ｏ、Ｓ〜Ｘは本発明鋼であり、鋼Ｐ〜Ｒは比較鋼
である。本発明鋼Ａ〜Ｏ、Ｓ〜Ｘは、本発明において最
も重要な元素であるＴｉ量を変化させたものと、その他
の合金元素を変化させたものとした。比較鋼Ｐ、Ｑは、
Ｔｉ以外の合金元素は本発明の範囲内であるが、Ｔｉが
本発明の範囲外となっている。また、比較鋼ＲはＴｉ量
は本発明範囲であるが、Ｃ量が低く本発明の範囲外であ
る。[Example] Tables 1 and 2 show the chemical composition of the test steel. Steels A to O and S to X are inventive steels, and steels P to R are comparative steels. The present invention steels A to O and S to X were those in which the amount of Ti, which is the most important element in the present invention, was varied, and those in which other alloying elements were varied. Comparative steels P and Q are
Alloying elements other than Ti are within the scope of the present invention, but Ti is outside the scope of the present invention. Comparative steel R has a Ti content within the range of the present invention, but a low C content that is outside the range of the present invention.
【００２１】表２および表３に上記各鋼を用いて製造し
た鋼板の製造プロセスと耐摩耗比、硬度（ＨＢ）を示す
。耐摩耗比の定義は、上述したと同様である。摩耗試験
は、１００％ＳｉＯ２のケイ砂による摩耗重量変化（Ａ
ＳＴＭ Ｇ−６５に準拠）で評価した。製造プロセス
としては、圧延まま（ＡＲ）、再加熱焼入れ（ＲＱ）、
直接焼入れ（ＤＱ）、再加熱焼入れ−焼戻し（ＲＱＴ）
、直接焼入れ−焼戻し（ＤＱＴ）の各プロセスを用いた
。Tables 2 and 3 show the manufacturing process, wear resistance ratio, and hardness (HB) of steel plates manufactured using each of the above-mentioned steels. The definition of the wear resistance ratio is the same as described above. The abrasion test was performed using 100% SiO2 silica sand as a wear weight change (A
Evaluation was made in accordance with STM G-65). Manufacturing processes include as-rolled (AR), reheat quenching (RQ),
Direct quenching (DQ), reheat quenching-tempering (RQT)
, direct quenching-tempering (DQT) processes were used.
【００２２】比較鋼Ｐは本発明鋼Ａ、Ｂ−１、Ｄ等の比
較例であり、Ｔｉ添加量が本発明の規定値以下である。
これらの耐摩耗比を比較すると、比較鋼Ｐの耐摩耗比が
４．９であるのに対し、本発明鋼Ａでは６．５、本発明
鋼Ｂ−１では８．３、本発明鋼Ｄでは９．３であり、こ
の本発明鋼Ｄでは比較鋼の約２倍まで耐摩耗性が向上し
ている。さらに、本発明鋼の硬度は比較鋼よりもむしろ
低くなっており、硬度を上昇させずに耐摩耗性を向上さ
せるという目的が達成されていることも判る。Comparative steel P is a comparative example of steels A, B-1, D, etc. of the present invention, and the amount of Ti added is less than the specified value of the present invention. Comparing these wear resistance ratios, the wear resistance ratio of comparative steel P is 4.9, while that of inventive steel A is 6.5, that of inventive steel B-1 is 8.3, and that of inventive steel D. It is 9.3, and the wear resistance of the steel D of the present invention is approximately twice that of the comparative steel. Furthermore, the hardness of the steel of the present invention is rather lower than that of the comparative steel, indicating that the objective of improving wear resistance without increasing hardness has been achieved.
【００２３】比較鋼Ｑは本発明鋼Ｌ、Ｎ等の比較例であ
る。いずれの場合にも、本発明鋼の耐摩耗性が優れてい
ることが示されている。また、比較鋼Ｒは本発明鋼Ｂ−
１の比較例であり、Ｃ量が本発明の規定値以下である。
このため耐摩耗性は著しく低く、本発明より顕著に劣っ
ている。Comparative steel Q is a comparative example of steels L, N, etc. of the present invention. In both cases, it is shown that the steel of the present invention has excellent wear resistance. In addition, comparative steel R is the invention steel B-
This is a comparative example of No. 1, and the amount of C is below the specified value of the present invention. Therefore, the wear resistance is extremely low, and is significantly inferior to that of the present invention.
【００２４】[0024]
【表１】[Table 1]
【００２５】[0025]
【表２】[Table 2]
【００２６】[0026]
【表３】[Table 3]
【００２７】[0027]
【表４】
＊１ 供試鋼板厚：１５ｍｍ
＊２ プロセス
ＡＲ ：普通圧延まま
ＲＱ ：普通圧延後空冷−９００℃加熱後焼入ＲＱＴ
：ＲＱ後、（ ）の温度で焼戻処理ＤＱ ：１１５
０℃スラブ加熱−８８０℃圧延仕上後−直接焼入
ＤＱＴ：ＤＱ後、（ ）の温度で焼戻処理＊３ 耐
摩耗比：軟鋼に対する供試鋼の摩耗重量の比率であり、
下式で示される。（摩耗剤：１００％ＳｉＯ２ケイ砂）
式…摩耗重量（供試鋼）／摩耗重量（軟鋼）[Table 4] *1 Test steel plate thickness: 15mm *2 Process AR: Normally rolled RQ: Normally rolled then air cooled - 900°C heated then quenched RQT
: After RQ, tempering treatment at temperature in ( ) DQ: 115
0°C slab heating - 880°C after rolling finishing - Direct quenching DQT: After DQ, tempering treatment at the temperature in ( ) *3 Wear resistance ratio: It is the ratio of the worn weight of the test steel to the mild steel,
It is shown by the formula below. (Abrasion agent: 100% SiO2 silica sand)
Formula…Abrasion weight (sample steel)/Abrasion weight (mild steel)
【００２８
】0028
]
【発明の効果】以上述べたように、本発明鋼は従来の耐
摩耗鋼に較べて優れた耐摩耗性を有しており、従来使用
中の摩耗が顕著で使用寿命が短かった機械、部品等の寿
命を大幅に延ばすことが可能となる。[Effects of the Invention] As stated above, the steel of the present invention has superior wear resistance compared to conventional wear-resistant steels, and it has been found that the steel of the present invention has superior wear resistance compared to conventional wear-resistant steel. This makes it possible to significantly extend the lifespan of.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】Ｔｉ添加量と耐摩耗性（耐摩耗比）との関係を
示すグラフである。FIG. 1 is a graph showing the relationship between the amount of Ti added and wear resistance (wear resistance ratio).
Claims (4)
：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０ｗｔ％
、Ｔｉ：０．０５〜１．５ｗｔ％、残部Ｆｅおよび不可
避的不純物からなる耐摩耗性に優れた鋼。[Claim 1] C: 0.05 to 0.45 wt%, Si
:0.1~1.0wt%, Mn:0.1~2.0wt%
, Ti: 0.05 to 1.5 wt%, the balance being Fe and unavoidable impurities. Steel with excellent wear resistance.
：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０ｗｔ％
、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これにＣｕ
：０．１〜２．０ｗｔ％、Ｎｉ：０．１〜１０．０ｗｔ
％、Ｃｒ：０．１〜３．０ｗｔ％、Ｍｏ：０．１〜３．
０ｗｔ％、Ｂ：０．０００３〜０．０１ｗｔ％のうちの
１種または２種以上の元素を含有し、残部Ｆｅおよび不
可避的不純物からなる耐摩耗性に優れた鋼。[Claim 2] C: 0.05 to 0.45 wt%, Si
:0.1~1.0wt%, Mn:0.1~2.0wt%
, Ti: 0.05 to 1.5 wt%, and Cu
:0.1~2.0wt%, Ni:0.1~10.0wt
%, Cr: 0.1-3.0 wt%, Mo: 0.1-3.
0 wt%, B: 0.0003 to 0.01 wt%, and the balance is Fe and unavoidable impurities. Steel with excellent wear resistance.
：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０ｗｔ％
、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これにＮｂ
：０．００５〜０．５ｗｔ％、Ｖ：０．０１〜０．５ｗ
ｔ％のうちの１種または２種の元素を含有し、残部Ｆｅ
および不可避的不純物からなる耐摩耗性に優れた鋼。[Claim 3] C: 0.05 to 0.45 wt%, Si
:0.1~1.0wt%, Mn:0.1~2.0wt%
, Ti: 0.05 to 1.5 wt%, and Nb
:0.005~0.5wt%, V:0.01~0.5w
t% of one or two elements, and the balance is Fe.
A highly wear-resistant steel that is made up of impurities and unavoidable impurities.
：０．１〜１．０ｗｔ％、Ｍｎ：０．１〜２．０ｗｔ％
、Ｔｉ：０．０５〜１．５ｗｔ％を含有し、これにＣｕ
：０．１〜２．０ｗｔ％、Ｎｉ：０．１〜１０．０ｗｔ
％、Ｃｒ：０．１〜３．０ｗｔ％、Ｍｏ：０．１〜３．
０ｗｔ％、Ｂ：０．０００３〜０．０１ｗｔ％のうちの
１種または２種以上の元素と、Ｎｂ：０．００５〜０．
５ｗｔ％、Ｖ：０．０１〜０．５ｗｔ％のうちの１種ま
たは２種の元素とを含有し、残部Ｆｅおよび不可避的不
純物からなる耐摩耗性に優れた鋼。[Claim 4] C: 0.05 to 0.45 wt%, Si
:0.1~1.0wt%, Mn:0.1~2.0wt%
, Ti: 0.05 to 1.5 wt%, and Cu
:0.1~2.0wt%, Ni:0.1~10.0wt
%, Cr: 0.1-3.0 wt%, Mo: 0.1-3.
0wt%, B: 0.0003 to 0.01wt%, and Nb: 0.005 to 0.0wt%.
5 wt%, V: 0.01 to 0.5 wt%, and one or two types of elements, and the balance is Fe and inevitable impurities, and has excellent wear resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13953791A JPH04228536A (en) | 1990-06-06 | 1991-05-16 | Steel excellent in wear resistance |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14840090 | 1990-06-06 | ||
| JP2-148400 | 1990-06-06 | ||
| JP13953791A JPH04228536A (en) | 1990-06-06 | 1991-05-16 | Steel excellent in wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04228536A true JPH04228536A (en) | 1992-08-18 |
Family
ID=26472323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13953791A Pending JPH04228536A (en) | 1990-06-06 | 1991-05-16 | Steel excellent in wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04228536A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007197813A (en) * | 2005-12-28 | 2007-08-09 | Jfe Steel Kk | Wear-resistant steel sheet superior in bendability |
| WO2008146929A1 (en) * | 2007-05-29 | 2008-12-04 | Jfe Steel Corporation | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
| CN103266270A (en) * | 2013-05-23 | 2013-08-28 | 江苏久联冶金机械制造有限公司 | Boron-containing iron-based wear-resistant material |
| CN109778068A (en) * | 2019-03-11 | 2019-05-21 | 上海大学 | The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying |
| CN116770181A (en) * | 2023-06-25 | 2023-09-19 | 张家口万邦锻造有限公司 | Low-alloy high-wear-resistance lining plate and preparation method thereof |
-
1991
- 1991-05-16 JP JP13953791A patent/JPH04228536A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007197813A (en) * | 2005-12-28 | 2007-08-09 | Jfe Steel Kk | Wear-resistant steel sheet superior in bendability |
| WO2008146929A1 (en) * | 2007-05-29 | 2008-12-04 | Jfe Steel Corporation | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
| JP2009007665A (en) * | 2007-05-29 | 2009-01-15 | Jfe Steel Kk | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
| AU2008255706B2 (en) * | 2007-05-29 | 2011-10-13 | Jfe Steel Corporation | Abrasion resistant steel excellent in formability and production method thereof |
| CN103266270A (en) * | 2013-05-23 | 2013-08-28 | 江苏久联冶金机械制造有限公司 | Boron-containing iron-based wear-resistant material |
| CN109778068A (en) * | 2019-03-11 | 2019-05-21 | 上海大学 | The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying |
| CN116770181A (en) * | 2023-06-25 | 2023-09-19 | 张家口万邦锻造有限公司 | Low-alloy high-wear-resistance lining plate and preparation method thereof |
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