JPH08165542A - Steel for metal mold for plastic molding, excellent in weldability - Google Patents
Steel for metal mold for plastic molding, excellent in weldabilityInfo
- Publication number
- JPH08165542A JPH08165542A JP33156594A JP33156594A JPH08165542A JP H08165542 A JPH08165542 A JP H08165542A JP 33156594 A JP33156594 A JP 33156594A JP 33156594 A JP33156594 A JP 33156594A JP H08165542 A JPH08165542 A JP H08165542A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- plastic molding
- weldability
- value
- metal mold
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明はプラスチック成形金型
用鋼に関し、詳しくは溶接性に優れたプラスチック成形
金型用鋼に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to steel for plastic molding dies, and more particularly to steel for plastic molding dies having excellent weldability.
【0002】[0002]
【従来の技術】プラスチック成形金型においては、金型
製作時の加工の誤りや設計変更等に対応するために肉盛
溶接による補修を行うことが少なくない。従来、かかる
プラスチック成形金型、特に比較的大型のプラスチック
成形金型用材料としてはS55C等の一般構造用鋼やS
CM445等の中低炭素鋼が用いられていた。2. Description of the Related Art In a plastic molding die, it is not uncommon for repairs to be made by overlay welding in order to cope with processing errors and design changes during the manufacture of the die. Conventionally, as a material for such a plastic molding die, particularly a relatively large plastic molding die, general structural steel such as S55C or S
Medium-low carbon steel such as CM445 was used.
【0003】而してこれら材料から成るプラスチック成
形金型の場合、溶接に際して溶接割れ防止のために予熱
(250〜350℃)を行うことが必要とされ、また場
合によって後熱を必要とするものもある。In the case of a plastic molding die made of these materials, it is necessary to preheat (250 to 350 ° C.) in order to prevent weld cracks during welding, and if necessary post heat. There is also.
【0004】しかしながら溶接に際してこのような予
熱,後熱を施すとなると専用の加熱炉が必要となった
り、加熱に長時間を要したり、予熱後の高温状態の金型
に対して溶接作業を行うことが必要で作業性が悪い等の
問題が生じ、その解決が望まれていた。However, if such preheating and postheating are applied during welding, a dedicated heating furnace is required, it takes a long time for heating, and welding work is performed on a die in a high temperature state after preheating. It is necessary to do so, and problems such as poor workability have arisen, and its solution has been desired.
【0005】またプラスチック成形金型用鋼としては、
焼入性が良好で尚且つ鏡面加工性,シボ加工性に優れ、
更に被削性においても優れていることが要求される。Further, as the steel for the plastic molding die,
It has good hardenability and excellent mirror surface workability and grain workability.
Further, it is required to have excellent machinability.
【0006】このようなことから,本発明者等は溶接に
際して予熱,後熱を必要としない溶接補修性に優れたプ
ラスチック成形金型用プレハードン鋼を開発し、提案を
行っている(特開平3−177536号)。Under these circumstances, the inventors of the present invention have developed and proposed a pre-hardened steel for a plastic molding die which does not require preheating or postheating during welding and is excellent in weld repairability (Japanese Patent Laid-Open No. Hei 3). -177536).
【0007】[0007]
【発明が解決しようとする課題】この特開平3−177
536号の発明のプラスチック成形金型用鋼は、Siの
含有量を0.25%以下の少ない量に規制すると同時
に、不純物としてのP,Bを一定以下に規制し、またS
を適量存在させるとともに、溶接時に最大の応力がかか
る溶接境界部の母材側の硬さBH値を所定値以下に抑制
し、併せて焼入性向上元素の添加量を多くすることによ
って溶接性の向上,プラスチック成形金型用鋼として必
要な硬さと加工性を確保した点を特徴とするものであ
る。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the steel for plastic molds of the invention of No. 536, the content of Si is regulated to a small amount of 0.25% or less, and at the same time, P and B as impurities are regulated to a certain level, and
The amount of hardenability-improving element is increased and the hardenability BH value on the base metal side of the weld boundary where the maximum stress is applied at the time of welding is suppressed to a predetermined value or less. And the hardness and workability required for plastic mold steel are secured.
【0008】しかしながらSiは鉄鋼材料では極めて広
く使用されている元素であり、その含有量を0.25%
以下に規制した場合、鋼の特定の特性が良好となるもの
の、プラスチック成形金型用鋼の製造に当って原料配合
上の制約が大きく、経済性を損なう問題も一方において
内包している。However, Si is an element widely used in steel materials, and its content is 0.25%.
In the case of the following restrictions, although the specific characteristics of the steel will be good, there is a large restriction on the raw material blending in the production of the steel for plastic molding dies, and on the other hand, there is the problem of impairing the economic efficiency.
【0009】[0009]
【課題を解決するための手段】本願の発明はこのような
事情を背景としてなされたものである。而して本願の発
明は、プラスチック成形金型用鋼の組成を、重量%で
C:0.10〜0.25%,Si:0.25超〜0.3
5%,Mn:1.20〜2.20%,P:≦0.020
%,S:0.01〜0.05%,Cr:1.60〜3.
00%,Mo:0.03〜2.00%,V:0.01〜
0.40%,B:≦0.002%,残部実質的にFeか
ら成り且つ下記式 BH値=326+847.3(C%)+18.3(Si
%)−8.6(Mn%)−12.5(Cr%)≦460 を満足する組成となしたことを特徴とする(請求項
1)。The invention of the present application has been made in view of such circumstances. Thus, the invention of the present application is such that the composition of the steel for plastic molding die is C: 0.10 to 0.25% by weight and Si: more than 0.25 to 0.3.
5%, Mn: 1.20 to 2.20%, P: ≤ 0.020
%, S: 0.01 to 0.05%, Cr: 1.60 to 3.
00%, Mo: 0.03 to 2.00%, V: 0.01 to
0.40%, B: ≤ 0.002%, balance consisting essentially of Fe and the following formula BH value = 326 + 847.3 (C%) + 18.3 (Si
%)-8.6 (Mn%)-12.5 (Cr%) ≤460 (Claim 1).
【0010】ここで、上記成分に加えて選択元素として
Cu,Niの何れか1種又は2種を、Cu:≦1.0
%,Ni:≦2.0%の範囲で含有させることができ、
更に他の選択元素としてZr,Pb,Te,Ca,Bi
の何れか1種又は2種以上を、Zr:0.003〜0.
2%,Pb:0.03〜0.20%,Te:0.01〜
0.15%,Ca:0.0005〜0.010%,B
i:0.01〜0.20%の範囲で含有させることがで
きる。Here, in addition to the above components, one or two of Cu and Ni are used as selective elements, and Cu: ≦ 1.0.
%, Ni: can be contained in the range of ≦ 2.0%,
Zr, Pb, Te, Ca, Bi as other selective elements
Any one or two or more of Zr: 0.003 to 0.
2%, Pb: 0.03 to 0.20%, Te: 0.01 to
0.15%, Ca: 0.0005 to 0.010%, B
i: It can be contained in the range of 0.01 to 0.20%.
【0011】[0011]
【作用】本発明は、添加可能なSiの量を多くすること
によって原料配合上の制約を緩和しつつ、尚且つ特開平
3−177536号のプラスチック成形金型用鋼と同
様、溶接に際して予熱,後熱を必要としない溶接性に優
れたプラスチック成形金型用鋼を得るべくなされたもの
で、Siの含有量の上限を0.35%まで拡大し(下限
は0.25%超)、且つこれを許容するための他の合金
成分の添加量及び添加量バランスを適正化したことを骨
子とする。The present invention alleviates the restrictions on the raw material blending by increasing the amount of Si that can be added, and, like the steel for plastic molding dies described in JP-A-3-177536, preheating during welding, It was made to obtain a steel for plastic molding dies that does not require post-heat and has excellent weldability. The upper limit of the Si content is expanded to 0.35% (the lower limit exceeds 0.25%), and The essence is to optimize the addition amount and the balance of the addition amounts of other alloy components to allow this.
【0012】而して本発明によれば、Siを多く含有さ
せることができることからプラスチック成形金型用鋼の
製造に当って原料配合の自由度、即ち使用可能な原料の
自由度が高まって経済性が高まるとともに、溶接性,焼
入性等の特性に優れたプラスチック成形金型用鋼を得る
ことができる。Thus, according to the present invention, since a large amount of Si can be contained, the degree of freedom of raw material mixing, that is, the degree of freedom of usable raw materials is increased in the production of steel for plastic molding dies, which is economical. As a result, it is possible to obtain a steel for a plastic molding die which has excellent properties such as weldability and hardenability.
【0013】次に上記合金成分の働きと含有量の限定理
由を詳述する。 C:0.10〜0.25% Cは組織と硬さを調整するための基本的な添加元素であ
る。Cは熱処理残留応力を除去するための600℃程度
の焼戻しにおいて所要の硬さを確保するために(望まし
くはHRC25以上、より望ましくは28以上)0.1
0%以上必要である。一方0.25%を超えて含有させ
ると、下記Siの含有量の下で溶接性の低下を招き、ま
た組織がマルテンサイト組織化して被削性が低下する。
従って上限を0.25%とする。Next, the functions of the above alloy components and the reasons for limiting the contents will be described in detail. C: 0.10 to 0.25% C is a basic additive element for adjusting the structure and hardness. C is 0.1 in order to secure a required hardness in tempering at about 600 ° C. for removing residual stress of heat treatment (desirably HRC 25 or more, more desirably 28 or more).
0% or more is required. On the other hand, if the content exceeds 0.25%, the weldability is lowered under the Si content below, and the structure becomes a martensite structure, resulting in a decrease in machinability.
Therefore, the upper limit is 0.25%.
【0014】Si:0.25超〜0.35% Siは脱酸作用,耐酸化性,焼入性,基地硬さを高める
点で有効な成分である。但し0.25%以下では原料配
合面で経済性が悪いため0.25%を超える量とする。
一方0.35%より多くなると靱性,溶接性が低下する
ため上限を0.35%とする。Si: over 0.25 to 0.35% Si is an effective component in enhancing deoxidizing action, oxidation resistance, hardenability, and matrix hardness. However, if it is 0.25% or less, the economical efficiency is poor in terms of blending the raw materials, so the amount exceeds 0.25%.
On the other hand, if it exceeds 0.35%, the toughness and weldability deteriorate, so the upper limit is made 0.35%.
【0015】Mn:1.20〜2.20% Mnは脱酸作用のため、またベーナイト組織を得るため
の焼入性,基地硬さの向上のため、更にSと結合して被
削性を付与するための成分として有効な成分である。ま
たMnは一定量以上添加することによって溶接性を高め
る働きも有する。但しそのためには1.20%以上含有
させる必要がある。一方2.20%を超えると溶接性と
被削性が低下するため上限を2.20%とする。Mn: 1.20 to 2.20% Mn is combined with S for machinability for deoxidizing action and for improving hardenability and matrix hardness for obtaining bainite structure. It is an effective component as a component for giving. Further, Mn also has a function of enhancing weldability by adding a certain amount or more. However, for that purpose, it is necessary to contain 1.20% or more. On the other hand, if it exceeds 2.20%, the weldability and machinability deteriorate, so the upper limit is made 2.20%.
【0016】P:≦0.020% Pは溶接割れ感受性にとって有害であり、その上限を
0.020%とする必要がある。P: ≦ 0.020% P is harmful to the weld crack susceptibility, and its upper limit must be 0.020%.
【0017】S:0.01〜0.05% SはMnと結合して被削性を付与し、また溶接割れ防止
にも有効である。但し多過ぎると靱性,熱間加工性が低
下する。本発明ではSを0.01〜0.05%の範囲で
含有させることが必要である。S: 0.01-0.05% S is combined with Mn to impart machinability and is also effective for preventing weld cracks. However, if the amount is too large, the toughness and hot workability deteriorate. In the present invention, it is necessary to contain S in the range of 0.01 to 0.05%.
【0018】Cr:1.60〜3.00% Crは耐酸化性,ベーナイト組織を得るための焼入性,
焼戻時の微細炭化物析出による硬さ確保に有効な成分で
ある。またCrを1.60%以上とすることによって良
好な溶接性を確保することができる。他方3.00%を
超えて多く含有させると組織がマルテンサイト組織化し
て硬さが過剰となり、被削性が低下する。Cr: 1.60 to 3.00% Cr is oxidation resistance, hardenability for obtaining a bainite structure,
It is an effective component for securing hardness by precipitation of fine carbides during tempering. Further, by setting Cr to 1.60% or more, good weldability can be secured. On the other hand, if it is contained in excess of 3.00%, the structure becomes a martensite structure, the hardness becomes excessive, and the machinability deteriorates.
【0019】Mo:0.03〜2.00% Moは焼入性を高めるとともに600℃以上での焼戻軟
化抵抗性を与える。そのための必須添加量として0.0
3%以上が必要である。一方2.00%を超えて含有さ
せると被削性が低下するとともにコストアップを招くの
で上限を2.00%とする。Mo: 0.03 to 2.00% Mo enhances the hardenability and gives temper softening resistance at 600 ° C. or higher. 0.0 as an essential addition amount for that
3% or more is required. On the other hand, if the content exceeds 2.00%, the machinability decreases and the cost increases, so the upper limit is made 2.00%.
【0020】V:0.01〜0.40% Vは焼戻時の微細炭化物析出による硬さ確保の上で、ま
た結晶粒を微細化する上で有効な成分であり、本発明で
は0.01%以上含有させる。但し0.40%を超えて
含有させると被削性,靱性が低下するとともに溶接性が
低下してしまう。V: 0.01 to 0.40% V is an effective component for securing hardness by precipitation of fine carbide during tempering and for refining crystal grains. Include at least 01%. However, if the content exceeds 0.40%, the machinability and toughness are deteriorated and the weldability is deteriorated.
【0021】B:≦0.002% Bは溶接割れ感受性にとって有害であり、0.002%
以下に規制する必要がある。B: ≤ 0.002% B is harmful to the weld crack susceptibility, and 0.002%
The following needs to be regulated.
【0022】Cu:≦1.0% Ni:≦2.0% Cu及びNiは必要な硬さを得るために加えられる成分
で何れも本発明において選択添加元素である。ここでC
uは500℃以上での焼戻しにおいて析出硬化により硬
さを得るために有効であり、一方多過ぎると熱間加工性
を害する。そこで本発明では上限を1.0%とする。N
iは焼入性向上に寄与する元素で2.0%以下の範囲で
含有させる。この上限を超えると被削性が悪くなる。Cu: ≦ 1.0% Ni: ≦ 2.0% Cu and Ni are components added to obtain the required hardness, and both are selective addition elements in the present invention. Where C
u is effective for obtaining hardness by precipitation hardening in tempering at 500 ° C. or higher, while if too large, it impairs hot workability. Therefore, in the present invention, the upper limit is set to 1.0%. N
i is an element that contributes to the improvement of hardenability and is contained in a range of 2.0% or less. If this upper limit is exceeded, machinability will deteriorate.
【0023】Zr:0.003〜0.2% Pb:0.03〜0.20% Te:0.01〜0.15% Ca:0.0005〜0.010% Bi:0.01〜0.20% これらの成分は何れも被削性を高めるために有効な成分
である。このうちZrは硫化物の展伸を抑えて靱性を向
上させる作用もするが、0.2%を超えるとむしろ被削
性が低下する。また他の各元素は上記上限値を超えると
地傷やブラックスポットを発生させるため、各上限値以
下の範囲で含有させる。Zr: 0.003 to 0.2% Pb: 0.03 to 0.20% Te: 0.01 to 0.15% Ca: 0.0005 to 0.010% Bi: 0.01 to 0 .20% All of these components are effective components for improving machinability. Of these, Zr also acts to suppress the spread of sulfides and improve toughness, but if it exceeds 0.2%, the machinability is rather reduced. Further, each of the other elements causes ground scratches and black spots when the amount exceeds the above upper limit, so that it is contained within the range of each upper limit or less.
【0024】BH値=326+847.3(C%)+1
8.3(Si%)−8.6(Mn%)−12.5(Cr
%)≦460 ここでBH値は溶接時に最大応力が加わる溶接境界部の
母材側の硬さ(Hv)の値で、それぞれ括弧内の合金成
分の関数として表される。BH value = 326 + 847.3 (C%) + 1
8.3 (Si%)-8.6 (Mn%)-12.5 (Cr
%) ≦ 460 Here, the BH value is a value of hardness (Hv) on the base metal side of the weld boundary portion to which the maximum stress is applied during welding, and is expressed as a function of alloy components in parentheses.
【0025】本発明者は、溶接境界部の母材側の硬さB
H値がHvで460を境として溶接割れ率が急激に変化
し、Hvが460を超えると溶接割れ率が急激に高まる
事実を確認し、先の特許願(特開平3−177536
号)において開示している。The inventor has found that the hardness B on the base metal side of the weld boundary portion is
It was confirmed that the weld cracking rate sharply changes when the H value is Hv at 460 and the weld cracking rate sharply increases when Hv exceeds 460, and the above-mentioned Japanese Patent Application (JP-A-3-177536).
No.).
【0026】本発明におけるBH値の規定はこれに沿っ
たものであって、BH値を460以下に抑えることによ
って溶接割れを抑制でき、予熱,後熱を行わなくてもプ
ラスチック成形金型に対し良好に溶接補修を行うことが
可能となる。The definition of the BH value in the present invention is in line with this. By suppressing the BH value to 460 or less, weld cracking can be suppressed, and even if preheating and post-heating are not performed, the plastic molding die can be treated. It is possible to perform good welding repair.
【0027】上記式に現れているようにBH値はCとS
iの増大につれて高くなり、また逆にMn,Cr量の増
大に応じて値が低くなる。本発明はSiの含有量を上記
特開平3−177536号の鋼種よりも高くしており、
その点で溶接性については悪化する傾向となるが、一方
でCの上限値を下げ且つMn及びCrの添加量の下限値
を高めており、Siの増量による溶接性への悪影響をそ
れらによって解消している点に特徴がある。As shown in the above equation, the BH values are C and S.
It increases as i increases, and conversely decreases as Mn and Cr contents increase. In the present invention, the content of Si is set higher than that of the steel type disclosed in JP-A-3-177536.
At that point, the weldability tends to deteriorate, but on the other hand, the upper limit of C is lowered and the lower limits of the amounts of Mn and Cr added are raised, and the adverse effects on weldability due to the increase of Si are eliminated by them. There is a feature in doing it.
【0028】[0028]
【実施例】次に本発明の実施例を以下に詳述する。表1
に示す組成の鋼を溶製及び鍛造した後、以下の条件で熱
処理を施し、試験片を作製してJIS−Z3158に規
定する斜めY型溶接割れ試験を実施した。その結果が硬
さとともに表2に示してある。EXAMPLES Examples of the present invention will be described in detail below. Table 1
After smelting and forging the steel having the composition shown in (1), a heat treatment was performed under the following conditions to prepare a test piece, and a diagonal Y-type weld cracking test specified in JIS-Z3158 was performed. The results are shown in Table 2 together with the hardness.
【0029】〈熱処理条件〉 焼入れ 870〜950℃ 焼戻し 620℃<Heat treatment conditions> Quenching 870 to 950 ° C Tempering 620 ° C
【0030】[0030]
【表1】 [Table 1]
【0031】[0031]
【表2】 [Table 2]
【0032】表に示す結果から、本発明例の鋼種の場合
溶接性が良好で、しかも高い硬度が得られることが分か
る。尚、以上はあくまで本発明の具体例であって、本発
明は他の態様で実施することも可能である。From the results shown in the table, it can be seen that the steel types of the present invention have good weldability and high hardness. It should be noted that the above is merely a specific example of the present invention, and the present invention can be implemented in other modes.
【0033】[0033]
【発明の効果】本発明によれば、プラスチック成形金型
用鋼を製造するに当って、合金成分としてのSiを多く
含有させることが可能となり、金型用鋼の製造に当って
原料配合の自由度が高まって経済性が良好となるととも
に、溶接性,焼入性等の特性に優れたプラスチック成形
金型用鋼を得ることができる。According to the present invention, it is possible to add a large amount of Si as an alloy component in producing a plastic molding die steel. It is possible to obtain a steel for a plastic molding die which has a high degree of freedom and is excellent in economic efficiency and has excellent characteristics such as weldability and hardenability.
Claims (4)
%)−8.6(Mn%)−12.5(Cr%)≦460 を満足する組成を有する溶接性に優れたプラスチック成
形金型用鋼。1. By weight%, C: 0.10 to 0.25% Si: more than 0.25 to 0.35% Mn: 1.20 to 2.20% P: ≤ 0.020% S: 0.0. 01 to 0.05% Cr: 1.60 to 3.00% Mo: 0.03 to 2.00% V: 0.01 to 0.40% B: ≤ 0.002% The balance consists essentially of Fe. And the following formula BH value = 326 + 847.3 (C%) + 18.3 (Si
%) -8.6 (Mn%) -12.5 (Cr%) ≤ 460, which is a steel for a plastic molding die having excellent weldability and having a composition.
%)−8.6(Mn%)−12.5(Cr%)≦460 を満足する組成を有する溶接性に優れたプラスチック成
形金型用鋼。2. By weight%, C: 0.10 to 0.25% Si: more than 0.25 to 0.35% Mn: 1.20 to 2.20% P: ≦ 0.020% S: 0.0. 01 to 0.05% Cr: 1.60 to 3.00% Mo: 0.03 to 2.00% V: 0.01 to 0.40% B: ≤ 0.002% In addition to Cu and Ni One or two of them is contained in the range of Cu: ≤ 1.0% Ni: ≤ 2.0%, the balance being substantially Fe and having the following formula: BH value = 326 + 847.3 (C%) + 18. 3 (Si
%) -8.6 (Mn%) -12.5 (Cr%) ≤ 460, which is a steel for a plastic molding die having excellent weldability and having a composition.
は2種以上を Zr:0.003〜0.2% Pb:0.03〜0.20% Te:0.01〜0.15% Ca:0.0005〜0.010% Bi:0.01〜0.20% の範囲で含有し、残部実質的にFeから成り且つ下記式 BH値=326+847.3(C%)+18.3(Si
%)−8.6(Mn%)−12.5(Cr%)≦460 を満足する組成を有する溶接性に優れたプラスチック成
形金型用鋼。3. C: 0.10 to 0.25% Si: more than 0.25 to 0.35% Mn: 1.20 to 2.20% P: ≤ 0.020% S: 0.0. 01 to 0.05% Cr: 1.60 to 3.00% Mo: 0.03 to 2.00% V: 0.01 to 0.40% B: ≤ 0.002% In addition to Zr, Pb, Any one or two or more of Te, Ca and Bi are Zr: 0.003 to 0.2% Pb: 0.03 to 0.20% Te: 0.01 to 0.15% Ca: 0.0005 ˜0.010% Bi: 0.01 to 0.20%, with the balance being essentially Fe and the following formula: BH value = 326 + 847.3 (C%) + 18.3 (Si
%) -8.6 (Mn%) -12.5 (Cr%) ≤ 460, which is a steel for a plastic molding die having excellent weldability and having a composition.
iの何れか1種又は2種以上を Zr:0.003〜0.2% Pb:0.03〜0.20% Te:0.01〜0.15% Ca:0.0005〜0.010% Bi:0.01〜0.20% の範囲で含有し、残部実質的にFeから成り且つ下記式 BH値=326+847.3(C%)+18.3(Si
%)−8.6(Mn%)−12.5(Cr%)≦460 を満足する組成を有する溶接性に優れたプラスチック成
形金型用鋼。4. C: 0.10 to 0.25% Si: more than 0.25 to 0.35% Mn: 1.20 to 2.20% P: ≤ 0.020% S: 0.04% by weight. 01 to 0.05% Cr: 1.60 to 3.00% Mo: 0.03 to 2.00% V: 0.01 to 0.40% B: ≤ 0.002% In addition to Cu and Ni Any one or two kinds are contained in the range of Cu: ≤1.0%, Ni: ≤2.0%, and Zr, Pb, Te, Ca, B.
Any one or more of i is Zr: 0.003 to 0.2% Pb: 0.03 to 0.20% Te: 0.01 to 0.15% Ca: 0.0005 to 0.010 % Bi: contained in the range of 0.01 to 0.20%, the balance substantially consisting of Fe and the following formula: BH value = 326 + 847.3 (C%) + 18.3 (Si
%) -8.6 (Mn%) -12.5 (Cr%) ≤ 460, which is a steel for a plastic molding die having excellent weldability and having a composition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33156594A JPH08165542A (en) | 1994-12-08 | 1994-12-08 | Steel for metal mold for plastic molding, excellent in weldability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33156594A JPH08165542A (en) | 1994-12-08 | 1994-12-08 | Steel for metal mold for plastic molding, excellent in weldability |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08165542A true JPH08165542A (en) | 1996-06-25 |
Family
ID=18245086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33156594A Pending JPH08165542A (en) | 1994-12-08 | 1994-12-08 | Steel for metal mold for plastic molding, excellent in weldability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08165542A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003083154A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel (France) | Bulk steel for the production of injection moulds for plastic material or for the production of tools for working metals |
WO2003083153A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel France | Bulk steel for the production of injection moulds for plastic material or for the production of pieces for working metals |
EP2218802A1 (en) * | 2009-01-29 | 2010-08-18 | Daido Tokushuko Kabushiki Kaisha | Steel for mold for plastic molding and mold for plastic molding |
-
1994
- 1994-12-08 JP JP33156594A patent/JPH08165542A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003083154A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel (France) | Bulk steel for the production of injection moulds for plastic material or for the production of tools for working metals |
WO2003083153A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel France | Bulk steel for the production of injection moulds for plastic material or for the production of pieces for working metals |
FR2838137A1 (en) * | 2002-04-03 | 2003-10-10 | Usinor | STEEL FOR THE MANUFACTURE OF MOLDS FOR INJECTION MOLDING OF PLASTIC MATERIALS OR FOR THE MANUFACTURE OF TOOLS FOR THE WORKING OF METALS |
FR2838138A1 (en) * | 2002-04-03 | 2003-10-10 | Usinor | STEEL FOR THE MANUFACTURE OF PLASTIC INJECTION MOLDS OR FOR THE MANUFACTURE OF WORKPIECES FOR METAL WORKING |
CN1317416C (en) * | 2002-04-03 | 2007-05-23 | 法国安达斯戴乐公司 | Bulk steel for the production of injection moulds for plastic material or for the production of pieces for working metals |
AU2003258841B2 (en) * | 2002-04-03 | 2008-05-29 | Industeel France | Bulk steel for the production of injection moulds for plastic material or for the production of pieces for working metals |
EP2218802A1 (en) * | 2009-01-29 | 2010-08-18 | Daido Tokushuko Kabushiki Kaisha | Steel for mold for plastic molding and mold for plastic molding |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7471417B2 (en) | High-hardness wear-resistant steel with excellent low-temperature impact toughness and manufacturing method thereof | |
JP2881869B2 (en) | Steel for plastic molds with excellent weldability | |
JPS60230960A (en) | Steel for cold forging | |
JP2001152246A (en) | Method for producing steel for plastic molding die excellent in toughness, mirror finishing property and machinability | |
JP2001262274A (en) | High strength steel belt and its producing method | |
JPH08165542A (en) | Steel for metal mold for plastic molding, excellent in weldability | |
JPS6223929A (en) | Manufacture of steel for cold forging | |
JP6903507B2 (en) | Hot tool steel with excellent hardenability and toughness | |
JPH10306345A (en) | Wire rod and bar steel for cold forging, excellent in strain aging characteristic, and their manufacture | |
JPH07316720A (en) | Non-heat treated steel having high durability ratio and high strength, and its production | |
JP3566162B2 (en) | Hot tool steel with excellent weldability | |
JP3999915B2 (en) | ERW steel pipe for cold forging with excellent workability and its manufacturing method | |
JP2576857B2 (en) | High strength non-tempered tough steel | |
JPH10263817A (en) | Manufacture of high strength welded joint having excellent crack resistance | |
JPH0826395B2 (en) | 80 kgf / mm with excellent weldability (2) High-strength steel manufacturing method | |
JP3042574B2 (en) | Hot forged product having high fatigue strength and method of manufacturing the same | |
JP2563164B2 (en) | High strength non-tempered tough steel | |
JPH08164465A (en) | Steel for die of die casting in small quantity production | |
JP3739997B2 (en) | High-tensile steel plate with excellent weldability | |
JPH0579728B2 (en) | ||
JPH05186820A (en) | Production of steel having high toughness and high strength and excellent in elongation characteristic | |
JPH07179988A (en) | Hot tool steel excellent in high temperature strength | |
JP2002012952A (en) | Tool steel for cold working | |
JP3566120B2 (en) | Cold tool steel with high cycle fatigue life and excellent machinability | |
JPH07118741A (en) | Production of extremely thick refined high strength steel plate |