JP3246614B2 - Glass forming steel - Google Patents
Glass forming steelInfo
- Publication number
- JP3246614B2 JP3246614B2 JP08690592A JP8690592A JP3246614B2 JP 3246614 B2 JP3246614 B2 JP 3246614B2 JP 08690592 A JP08690592 A JP 08690592A JP 8690592 A JP8690592 A JP 8690592A JP 3246614 B2 JP3246614 B2 JP 3246614B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- less
- weight
- glass
- equivalent
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガラス成形に用いられ
る金型やロールなどのガラス成形用鋼に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass forming steel such as a mold and a roll used for glass forming.
【０００２】[0002]
【従来の技術】一般にガラス成形用高級金型、またはガ
ラス成形用ロール材には、現在13Ｃrマルテンサイトス
テンレス鋼(JIS SUS420J2等)が一般的に使用されてい
る。また、前記13Ｃrマルテンサイト系ステンレス鋼の
改良鋼として、特公昭57-5871号、特開平3-199346号等
に開示される鋼が知られている。前者の改良鋼は、炭化
物形成元素との関係において、Ｃを極力低くして、耐酸
化性に寄与する有効Ｃr量を高めたものであり、後者の
改良鋼は、Ｃrを低めに設定して強度、熱伝導性を改善
し、またＮb添加により結晶粒粗大化を防止したもので
ある。2. Description of the Related Art Currently, 13Cr martensitic stainless steel (JIS SUS420J2, etc.) is generally used for high-grade dies for glass molding or roll materials for glass molding. Further, as an improved steel of the 13Cr martensitic stainless steel, there are known steels disclosed in Japanese Patent Publication No. 57-5871 and Japanese Patent Application Laid-Open No. 3-199346. In the former improved steel, in relation to the carbide forming element, C is reduced as much as possible to increase the effective Cr amount contributing to oxidation resistance, and in the latter improved steel, the Cr is set lower. It improves strength and thermal conductivity, and prevents crystal grain coarsening by adding Nb.
【０００３】[0003]
【発明が解決しようとする課題】ガラス成形金型やロー
ルの寿命原因は、高温酸化による肌あれ、芒硝による化
学的腐食によるくもり、表面の昇温による降伏にともな
う表面の凹凸模様の生成、ヒートクラック、耐摩耗性不
足による摩耗状肌あれ等が主なものである。これらのう
ち、表面の凹凸模様、ヒートクラックや摩耗状肌あれ
は、型材やロール材の高温強度が不足して発生するが、
近年、成形温度の高いけい酸ガラスの成形量が増えるな
どを背景に、成形温度が上昇したため、より一層これら
のことがガラス成形部品の耐久性に関して、問題となっ
ている。これに対し、前記13Ｃrマルテンサイトステン
レス鋼、特公昭57-5871号に開示された鋼は、いずれも
上記問題を解消することができず、さらにまた、前記特
開平3-199346号に開示された鋼においても十分満足され
ていない。本発明は、高温強度を向上させて前述の寿命
状態、特にヒートクラックの発生を抑制し、型寿命を向
上させたガラス成形用鋼を提供するものである。The causes of the life of a glass forming mold and a roll are as follows: roughening due to high-temperature oxidation, clouding due to chemical corrosion due to sodium sulfate, generation of surface irregularities due to yielding due to surface temperature rise, heat Cracks, wear-like skin roughness due to insufficient wear resistance, and the like are the main ones. Among these, surface irregularities, heat cracks and abrasion-like skin are generated due to insufficient high-temperature strength of the mold material and the roll material.
In recent years, the molding temperature has risen against the background of an increase in the molding amount of silicate glass having a high molding temperature, and these problems have become even more problematic regarding the durability of glass molded parts. On the other hand, none of the above-mentioned 13Cr martensitic stainless steel and the steel disclosed in Japanese Patent Publication No. 57-5871 can solve the above-mentioned problem, and furthermore, disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 3-199346. Not fully satisfied with steel. An object of the present invention is to provide a glass forming steel in which the high-temperature strength is improved to suppress the above-mentioned life state, particularly the occurrence of heat cracks, and the mold life is improved.
【０００４】[0004]
【課題を解決するための手段】本発明は、従来広く用い
られている13Ｃrマルテンサイトステンレス鋼等より、
Ｃr量を低めに設定することにより、ロール材に高温強
度を付与し、熱伝導性を高め、またＮb添加により、高
目の温度で焼入する時の結晶粒の粗大化を抑制して、靭
性を低下させることなく高温焼入を可能として、ロール
材に高温強度および軟化抵抗を付与するとともに、Ｎを
添加することにより、Ｓi，Ｗ，Ｍo，Ｖ，Ｎbのδフェ
ライト成形傾向を打ち消して、これらの添加効果を有効
に発揮せしめることにより、ヒートクラック発生までの
成形数を著しく伸長させ得ることを見出したことによる
ものである。本発明は、重量％でＣ 0.1〜0.3%、Ｓi
0.1〜3%、Ｍn 1.5%以下、Ｃr 8〜13%、Ｗ、Ｍoの一種
または二種を1/2Ｗ＋Ｍoで0.5〜3%、Ｖ 0.1〜1%、Ｎb
0.3%以下、Ｎ 0.01〜0.1%を含み、残部Ｆeおよび不可
避的不純物からなることを特徴とするガラス成形用鋼、
および該鋼にさらにＮi 1.5%以下とＣo 7%以下を適宜
添加した鋼である。なお、これらのうち、次式によるク
ロム当量 ｅqＣrを6.5〜11.0とすることが必要であ
る。クロム当量ｅqＣr＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi＋Ｃ
r＋1.5Ｗ＋4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30ＮSUMMARY OF THE INVENTION The present invention is based on the conventional widely used 13Cr martensitic stainless steel.
By setting the Cr amount to a low value, high-temperature strength is imparted to the roll material and the thermal conductivity is increased, and by adding Nb, the coarsening of crystal grains when quenching at a higher temperature is suppressed. High temperature quenching is possible without lowering toughness, imparting high temperature strength and softening resistance to the roll material, and adding N to counteract the δ ferrite forming tendency of Si, W, Mo, V and Nb. It has been found that by effectively exhibiting the effects of these additions, the number of moldings until the occurrence of heat cracks can be significantly extended. In the present invention, C is 0.1 to 0.3% by weight, Si
0.1 to 3%, Mn 1.5% or less, Cr 8 to 13%, one or two of W and Mo at 1/2 W + Mo 0.5 to 3%, V 0.1 to 1%, Nb
0.3% or less, containing 0.01-0.1% N, the balance Fe and unavoidable impurities, characterized by glass forming steel,
And a steel obtained by appropriately adding Ni 1.5% or less and Co 7% or less to the steel. Of these, it is necessary to set the chromium equivalent eqCr by the following equation to 6.5 to 11.0.
You . Chromium equivalent eqCr = -40C + 6Si-2Mn-4Ni + C
r + 1.5W + 4Mo + 11V-Co + 5Nb-30N
【０００５】[0005]
【作用】次に本発明のガラス成形用鋼の成分範囲の限定
理由について述べる。Ｃは、オーステナイト形成元素と
して添加され、熱処理によりマルテンサイト組織として
常温、高温の強度を高めるために必要であり、かつ炭化
物を形成し、耐摩耗性を付与し、また結晶粒の粗大化を
阻止するなどの効果のために含有せしめるものである。
多すぎると本鋼の特徴である高温強度を低下させ、耐ヒ
ートクラック性等を劣化させ、また靭性も低下させるの
で、上限を0.3%とし、低すぎると上記効果が得られない
ので0.10%を下限とする。Ｓiは、耐酸化性を向上させ、
かつＡ1変態点を上げるために含有せしめるものである
が、多すぎると熱伝導率、靭性を低下させるので、上限
を 3.00%とし、低すぎると含有効果が得られないので
下限を0.10%とする。Ｍnは、脱酸剤として添加される
が、多すぎると耐酸化性を劣化するので1.5%以下に限定
する。Next, the reasons for limiting the component ranges of the glass forming steel of the present invention will be described. C is added as an austenite-forming element and is necessary to increase the strength at room temperature and high temperature as a martensite structure by heat treatment, forms carbides, imparts wear resistance, and prevents crystal grains from becoming coarse. It is included for the effect of doing so.
If the content is too large, the high-temperature strength characteristic of the steel is reduced, the heat crack resistance and the like are deteriorated, and the toughness is also reduced.Therefore, the upper limit is set to 0.3%. Lower limit. Si improves oxidation resistance,
And although those allowed to contain in order to increase the A 1 transformation point, too large, the thermal conductivity, as it reduces the toughness, the upper limit was made 3.00%, and 0.10% the lower limit because too low a content effect can not be obtained I do. Mn is added as a deoxidizing agent, but if it is too much, the oxidation resistance deteriorates, so it is limited to 1.5% or less.
【０００６】Ｎiは、Ｃoと同様に金型やロールの表面酸
化物の密着性を大きくし、金型やロールとガラスとの型
離れ性を良くして、ガラス成形部品の寿命の向上効果を
もたらすが、多すぎるとＡ1変態点を下げ、また本鋼の
特徴である高温強度を低下させるので上限を1.5%とす
る。Ｃrは、ガラス成形用鋼の基本的な要求特性である
耐酸化性を付与するため必要な元素であり、かつＡ1変
態点を高め、Ｃと結合して炭化物を形成し、耐摩耗性を
高め、また結晶粒の粗大化を阻止する作用を有するもの
である。Ｃrは、特に優れた耐酸化性を維持するために
重要である。しかし、多すぎると高温強度を低下させ
る。これらを考慮して本発明においては、Ｃr量の上限
を13%とし、下限を8%とする。Ｗ、Ｍoは、単独または複
合で添加することができ、いずれの元素も焼もどし時、
微細な炭化物を析出して高温強度を増加させる効果と、
耐酸化性を付与する効果を有する。多すぎると靭性を低
下させるのでＷおよびＭoの一種または二種を1/2Ｗ＋Ｍ
oで3%以下とし、低すぎると上記添加の効果が得られな
いので0.5%以上とする。Ni, like Co, increases the adhesion of the surface oxide of the mold or roll, improves the mold releasability between the mold or roll and the glass, and improves the life of the glass molded part. However, if the content is too large, the A 1 transformation point is lowered, and the high-temperature strength characteristic of the present steel is lowered, so the upper limit is made 1.5%. Cr is an element necessary for imparting oxidation resistance, which is a basic required property of glass forming steel, and raises the A 1 transformation point and combines with C to form a carbide, thereby improving wear resistance. It has the effect of increasing the grain size and preventing the crystal grains from becoming coarse. Cr is particularly important for maintaining excellent oxidation resistance. However, if it is too large, the high-temperature strength is reduced. Considering these, in the present invention, the upper limit of the amount of Cr is set to 13%, and the lower limit is set to 8%. W and Mo can be added alone or in combination. When tempering any of the elements,
The effect of increasing the high-temperature strength by precipitating fine carbides,
Has the effect of imparting oxidation resistance. If it is too large, the toughness is reduced, so one or two of W and Mo are replaced by 1/2 W + M
The content of o is set to 3% or less. If the content is too low, the effect of the above-mentioned addition cannot be obtained, so the content is set to 0.5% or more.
【０００７】Ｖは、焼もどし時、凝集しにくい微細な炭
化物を析出し、高い温度域における強度を与える。ま
た、結晶粒を微細化する効果を持つが、多すぎると靭性
を低下させるので、上限を1%とする。また、0.1%未満で
は上記効果を得られないので0.1%以上とする。Ｎbは、
高温強度を高めるために、非常に効果的な元素であり、
耐ヒートクラック性を向上させる。しかし、0.3%を越え
ると粗大なＮb炭化物が生じ、また、マトリックスのＣ
濃度を下げ、かえって高温強度を低下させたり、δフェ
ライトを晶出させる欠点があるので上限は0.3%とする。
Ｃoは、Ｎiと同様に緻密で密着性の良い表面酸化膜を金
型表面やロール表面上に形成し、ガラスとの型離れ性を
向上して、ガラス成形部品の寿命向上効果をもたらす。
また、固溶体強化による高温強度向上効果も大きいが、
多すぎると靭性を下げ、また焼なまし硬さを上げ、機械
加工性を低下させるので7.0%以下とする。[0007] V precipitates fine carbides which are hardly agglomerated during tempering and gives strength in a high temperature range. Further, it has the effect of making the crystal grains finer, but if it is too much, the toughness is reduced, so the upper limit is made 1%. If the content is less than 0.1%, the above effect cannot be obtained, so the content is set to 0.1% or more. Nb is
It is a very effective element to increase high temperature strength,
Improves heat crack resistance. However, if it exceeds 0.3%, coarse Nb carbides are formed, and the C
The upper limit is set to 0.3% because of the drawbacks of lowering the concentration and lowering the high-temperature strength and crystallizing δ ferrite.
Co forms a dense and good-adhesion surface oxide film on the surface of a mold or a roll similarly to Ni, improves the mold releasability from glass, and has the effect of extending the life of a glass molded part.
In addition, although the high temperature strength improvement effect by solid solution strengthening is great,
If it is too large, the toughness is reduced, the annealing hardness is increased, and the machinability is reduced.
【０００８】Ｎは、本発明鋼を特徴付ける元素であり、
δフェライトの生成防止に効果がある点で重要である。
すなわち、本発明においてＳi,Ｗ,Ｍo,Ｖ,Ｎb等の作用
を有効に利用しようとすると、これらの元素がδフェラ
イト生成傾向が強いため、δフェライトを抑える必要が
あり、そのためにはＮを併用添加することが有効であ
る。そのためには0.01%未満では効果が充分でなく、ま
た、0.1%を越えると著しく靭性を低下するので0.01〜0.
1%とする。本発明のガラス金型用鋼は、実質的に焼もど
しマルテンサイト組織からなるものとすることが望まし
い。しかし、鋼塊の冷却方法によっては、成分偏析によ
り、靭性、高温強度にとって有害となるδフェライトを
生成し易いので、クロム当量を適正範囲に保持すること
によって、δフェライトの生成を制御することが望まし
い。クロム当量は、ｅqＣr＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi
＋Ｃr＋1.5Ｗ＋4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30Ｎによって
求められ、δフェライト阻止のためには、クロム当量を
11以下とするのが好ましい。しかし、クロム当量をあま
り小さくすると逆に高温強度が低下するので、クロム当
量ｅqＣrは6.5以上が望ましい。本発明の最も特徴的な
点は、主に耐酸化性を付与するＳi、高温強度を付与す
るＷ，Ｍo、高温強度と共に結晶粒を微細にし耐ヒート
クラック性を向上させる効果のあるＶ，Ｎbを、ガラス
成形用鋼の特性として満足できるまで十分添加すると共
に、これらの元素のマイナス効果であるδフェライト生
成傾向をＮ添加により効果的に抑制して、成形温度の高
いガラス成形用鋼として初めて実用化できる鋼を提案し
たことである。[0008] N is an element characterizing the steel of the present invention,
This is important in that it is effective in preventing the formation of δ ferrite.
That is, in order to effectively utilize the effects of Si, W, Mo, V, Nb, etc. in the present invention, it is necessary to suppress δ ferrite because these elements have a strong tendency to form δ ferrite. It is effective to add them together. For that purpose, the effect is not sufficient if it is less than 0.01%, and if it exceeds 0.1%, the toughness is remarkably reduced, so that 0.01 to 0.
1%. It is desirable that the glass mold steel of the present invention has substantially a tempered martensite structure. However, depending on the method of cooling the ingot, δ ferrite, which is harmful to toughness and high-temperature strength, is likely to be generated due to component segregation.Therefore, it is possible to control the generation of δ ferrite by maintaining the chromium equivalent in an appropriate range. desirable. The chromium equivalent is eqCr = -40C + 6Si-2Mn-4Ni.
+ Cr + 1.5W + 4Mo + 11V-Co + 5Nb-30N. To prevent δ ferrite, the equivalent of chromium
It is preferred to be 11 or less. However, if the chromium equivalent is too small, the high-temperature strength is conversely reduced, so that the chromium equivalent eqCr is desirably 6.5 or more. The most characteristic features of the present invention are mainly Si for imparting oxidation resistance, W and Mo for imparting high-temperature strength, and V and Nb which have the effect of making the crystal grains fine together with high-temperature strength and improving heat crack resistance. For the first time as a glass forming steel having a high forming temperature by adding N sufficiently to satisfy the properties of the glass forming steel, and effectively suppressing the negative effect of these elements, the δ ferrite formation tendency, by adding N. This is to propose a steel that can be put to practical use.
【０００９】[0009]
【実施例】次に本発明を実施例に基づき詳細に説明す
る。表１に示す組成の鋼よりなる鋼塊を溶製し、熱間加
工により試験片を得、所望の熱処理の後、引張試験、耐
ヒートクラック性の評価を行なった。ここでＡ〜Ｉは本
発明鋼、Ｘは比較鋼でＮb,Ｎを含まないもの、Ｙは従来
鋼である。熱処理は焼入を1030℃とし、次に硬さ HRC26
を狙いとして730〜780℃の焼もどしを施した。なお、本
表のＡ，ＢのＮi 0.01%およびＣのＣo 0.03%は、不純物
レベル内である。Next, the present invention will be described in detail with reference to examples. A steel ingot made of steel having the composition shown in Table 1 was melted, a test piece was obtained by hot working, and after a desired heat treatment, a tensile test and heat crack resistance were evaluated. Here, A to I are steels of the present invention, X is a comparative steel containing no Nb and N, and Y is a conventional steel. The heat treatment is quenching to 1030 ° C and then hardness HRC26
Tempered at 730-780 ° C with the aim of In this table, Ni 0.01% of A and B and Co 0.03% of C are within the impurity level.
【００１０】 [0010]
【００１１】[0011]
【表２】 [Table 2]
【００１２】表２に、各試料の常温および650℃での引
張強さを示す。本発明鋼Ａ〜Ｉは従来鋼Ｙ、比較鋼Ｘと
比べて高温域の強度が特に優れていることがわかる。こ
れは、Ｎを添加してｅqＣrを適正に保ちつつ、Ｎbを添
加した効果によるものである。但し、ＧはｅqＣrが望ま
しい範囲外のため高温強度がやや低い。また表２には、
耐ヒートクラック性として、クラック個数、クラック平
均長さ（mm)、クラック長最大長さ(mm)を示した。これ
らのヒートクラックテストは、試料表面をガスバーナ
で、680℃に加熱後、30℃まで水冷するサイクルを5000
回繰り返した後にそれぞれ測定したものである。本発明
鋼Ａ〜Ｉは従来鋼Ｙ、比較鋼Ｘと比べて優れた耐ヒート
クラック性を有していることがわかる。Table 2 shows the tensile strength at room temperature and 650 ° C. of each sample. It can be seen that the steels A to I of the present invention are particularly superior in strength in the high temperature region as compared with the conventional steel Y and the comparative steel X. This is due to the effect of adding Nb while properly maintaining eqCr by adding N. However, G has a slightly lower high-temperature strength because eqCr is outside the desirable range. Table 2 also shows
As the heat crack resistance, the number of cracks, average crack length (mm), and maximum crack length (mm) were shown. In these heat crack tests, the sample surface was heated to 680 ° C with a gas burner and then water-cooled to 30 ° C.
It was measured after each repetition. It can be seen that the steels A to I of the present invention have better heat crack resistance than the conventional steel Y and the comparative steel X.
【００１３】[0013]
【発明の効果】以上のように、本発明のガラス成形用鋼
は、δフェライトを抑制しつつ、高温強度を向上させる
ことにより、特に耐ヒートクラック性に優れ、ガラス成
形金型として用いられた場合に、耐久寿命が大幅に向上
するものである。As described above, the glass forming steel of the present invention is particularly excellent in heat crack resistance by improving high-temperature strength while suppressing δ ferrite, and was used as a glass forming mold. In this case, the durability life is greatly improved.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−199346（ＪＰ，Ａ) 特開 平３−90539（ＪＰ，Ａ) 特開 昭49−6013（ＪＰ，Ａ) 特開 昭53−103918（ＪＰ，Ａ) 特開 平３−31445（ＪＰ，Ａ) 特公 昭46−19774（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 38/00 - 38/60 C03B 9/48 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-199346 (JP, A) JP-A-3-90539 (JP, A) JP-A-49-6013 (JP, A) JP-A-53-1993 103918 (JP, A) JP-A-3-31445 (JP, A) JP-B-46-19774 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) C22C 38/00-38 / 60 C03B 9/48
Claims (4)
%、Ｍn 1.5%以下、Ｃr 8〜13%、Ｗ、Ｍoの一種または
二種を1/2Ｗ＋Ｍoで0.5〜3%、Ｖ 0.1〜1%、Ｎb 0.3%
以下、Ｎ 0.01〜0.1%を含み、残部Ｆeおよび不可避的
不純物からなり、且つ次式に示されるクロム当量 6.5
〜11.0の範囲にあることを特徴とするガラス成形用鋼。 クロム当量＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi＋Ｃr＋1.5Ｗ＋
4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30Ｎ C. 0.1 to 0.3% by weight of Si, 0.1 to 3% by weight of Si.
%, Mn 1.5% or less, Cr 8-13%, one or two types of W and Mo at 1 / 2W + Mo 0.5-3%, V 0.1-1%, Nb 0.3%
Hereinafter, the composition contains 0.01 to 0.1% of N, the balance being Fe and inevitable impurities , and the chromium equivalent represented by the following formula: 6.5
A steel for forming glass, which is in the range of 11.0 to 11.0. Chromium equivalent = -40C + 6Si-2Mn-4Ni + Cr + 1.5W +
4Mo + 11V-Co + 5Nb-30N
%、Ｍn 1.5%以下、Ｃr 8〜13%、Ｗ、Ｍoの一種または
二種を1/2Ｗ＋Ｍoで0.5〜3%、Ｖ 0.1〜1%、Ｎb 0.3%
以下、Ｃo 7%以下、Ｎ 0.01〜0.1%を含み、残部Ｆeお
よび不可避的不純物からなり、且つ次式に示されるクロ
ム当量 6.5〜11.0の範囲にあることを特徴とするガラ
ス成形用鋼。 クロム当量＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi＋Ｃr＋1.5Ｗ＋
4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30Ｎ 2. 0.1 to 0.3% by weight of C, 0.1 to 3% by weight of Si.
%, Mn 1.5% or less, Cr 8-13%, one or two types of W and Mo at 1 / 2W + Mo 0.5-3%, V 0.1-1%, Nb 0.3%
Hereinafter, Co 7% or less, include N 0.01 to 0.1%, and a balance of Fe and unavoidable impurities, and are shown in the following equation black
Garage characterized by being in the range of 6.5 to 11.0
Steel for forming. Chromium equivalent = -40C + 6Si-2Mn-4Ni + Cr + 1.5W +
4Mo + 11V-Co + 5Nb-30N
%、Ｍn 1.5%以下、Ｎi 1.5%以下、Ｃr 8〜13%、Ｗ、
Ｍoの一種または二種を1/2Ｗ＋Ｍoで0.5〜3%、Ｖ 0.1
〜1%、Ｎb 0.3%以下、Ｎ 0.01〜0.1%を含み、残部Ｆe
および不可避的不純物からなり、且つ次式に示されるク
ロム当量 6.5〜11.0の範囲にあることを特徴とするガ
ラス成形用鋼。 クロム当量＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi＋Ｃr＋1.5Ｗ＋
4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30Ｎ 3. C 0.1-0.3% by weight%, Si 0.1-3%
%, Mn 1.5% or less, Ni 1.5% or less, Cr 8-13%, W,
One or two types of Mo at 1 / 2W + Mo 0.5 ~ 3%, V 0.1
-1%, Nb 0.3% or less, N 0.01-0.1%, balance Fe
And unavoidable impurities , and
Gas equivalent to the range of 6.5-11.0 rom equivalent
Lath forming steel. Chromium equivalent = -40C + 6Si-2Mn-4Ni + Cr + 1.5W +
4Mo + 11V-Co + 5Nb-30N
%、Ｍn 1.5%以下、Ｎi 1.5%以下、Ｃr 8〜13%、Ｗ、
Ｍoの一種または二種を1/2Ｗ＋Ｍoで0.5〜3%、Ｖ 0.1
〜1%、Ｎb 0.3%以下、Ｃo 7%以下、Ｎ 0.01〜0.1%を
含み、残部Ｆeおよび不可避的不純物からなり、且つ次
式に示されるクロム当量 6.5〜11.0の範囲にあること
を特徴とするガラス成形用鋼。 クロム当量＝−40Ｃ＋6Ｓi−2Ｍn−4Ｎi＋Ｃr＋1.5Ｗ＋
4Ｍo＋11Ｖ−Ｃo＋5Ｎb−30Ｎ 4. C 0.1 to 0.3% by weight, Si 0.1 to 3% by weight.
%, Mn 1.5% or less, Ni 1.5% or less, Cr 8-13%, W,
One or two types of Mo at 1 / 2W + Mo 0.5-3%, V 0.1
To 1%, Nb 0.3% or less, Co 7% or less, include N 0.01 to 0.1%, and a balance of Fe and unavoidable impurities, and the following
The chromium equivalent shown in the formula is in the range of 6.5 to 11.0
Glass forming steel. Chromium equivalent = -40C + 6Si-2Mn-4Ni + Cr + 1.5W +
4Mo + 11V-Co + 5Nb-30N
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08690592A JP3246614B2 (en) | 1992-04-08 | 1992-04-08 | Glass forming steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08690592A JP3246614B2 (en) | 1992-04-08 | 1992-04-08 | Glass forming steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05287454A JPH05287454A (en) | 1993-11-02 |
| JP3246614B2 true JP3246614B2 (en) | 2002-01-15 |
Family
ID=13899860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08690592A Expired - Fee Related JP3246614B2 (en) | 1992-04-08 | 1992-04-08 | Glass forming steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3246614B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8286101B2 (en) | 2003-07-28 | 2012-10-09 | Sig G Kupka | Manipulating an on-screen object using zones surrounding the object |
| US8832597B2 (en) | 1995-06-06 | 2014-09-09 | Autodesk, Inc. | Method and apparatus for producing, controlling and displaying menus |
-
1992
- 1992-04-08 JP JP08690592A patent/JP3246614B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8832597B2 (en) | 1995-06-06 | 2014-09-09 | Autodesk, Inc. | Method and apparatus for producing, controlling and displaying menus |
| US8286101B2 (en) | 2003-07-28 | 2012-10-09 | Sig G Kupka | Manipulating an on-screen object using zones surrounding the object |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05287454A (en) | 1993-11-02 |
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