JP3212477B2 - Manufacturing method of sheet molding die - Google Patents
Manufacturing method of sheet molding dieInfo
- Publication number
- JP3212477B2 JP3212477B2 JP09101895A JP9101895A JP3212477B2 JP 3212477 B2 JP3212477 B2 JP 3212477B2 JP 09101895 A JP09101895 A JP 09101895A JP 9101895 A JP9101895 A JP 9101895A JP 3212477 B2 JP3212477 B2 JP 3212477B2
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- mold
- materials
- molding
- capsule
- 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
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Powder Metallurgy (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、汎用プラスチック、エ
ンプラ、スーパーエンプラ、ゴム、エラストマー等の樹
脂をシート（フィルムを含む。）状に押出成形するため
のシート成形用金型、特に、金型本体材と異なる材質を
金型の樹脂成形流路に熱間等方圧加圧（ＨＩＰ）処理に
より拡散接合して得る金型に関し、押出機等に利用され
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet molding die for extruding resins (including films) from general-purpose plastics, engineering plastics, super engineering plastics, rubbers, elastomers, etc., in particular, molds. A mold obtained by diffusing and joining a material different from the main body material to a resin molding flow path of the mold by hot isostatic pressing (HIP) is used for an extruder or the like.
【０００２】[0002]
【従来の技術】従来、シート成形用金型の成形流路はメ
ッキ層であるのが一般的であったが、このメッキ金型で
のメッキ層の剥離による樹脂腐食等での耐久性劣化、及
びメッキ層の多孔質性による平滑性の問題からの樹脂流
動性劣化を改善し得る樹脂シート成形用金型の製造方法
として、金型の樹脂成形流路にＨＩＰ処理により任意の
厚みで耐食性、耐摩耗性の良好な合金粉末を拡散接合し
た樹脂シート成形用の製造方法を本件出願人は提案した
（特公昭６−６１８１８号公報参照）。2. Description of the Related Art Conventionally, a molding flow path of a sheet molding die is generally a plating layer. As a method of manufacturing a resin sheet molding die capable of improving the resin fluidity deterioration from the problem of smoothness due to the porosity of the plating layer, corrosion resistance at any thickness by HIP treatment in the resin molding flow path of the mold, The present applicant has proposed a manufacturing method for forming a resin sheet in which an alloy powder having good wear resistance is diffusion-bonded (see Japanese Patent Publication No. 6-61818).
【０００３】この方法は、成形流路にほぼ等しい外形を
備えた中子型の外周面に耐熱性離型材を塗布した後、該
中子型を上部素材および下部素材の合わせ面に形成され
た上凹部および下凹部に充填用隙間を介して収納した状
態で両素材を重ね合わせ、該合わせ材の外周に現れた分
割線部を溶接し、ついで前記充填用隙間に耐食性、耐摩
耗性の良好な合金粉末を充填し脱気密封して熱間等方圧
加圧処理を施した後、該合わせ材を製品金型の前端面、
後端面および両側型の分割面に対応した面に沿って切断
し上下、左右各１対の素材を得、中子型を取出し、各素
材を仕上加工する方法である。According to this method, after a heat-resistant release material is applied to the outer peripheral surface of a core having an outer shape substantially equal to that of a molding flow path, the core is formed on a mating surface of an upper material and a lower material. The two materials are overlapped in a state where they are accommodated in the upper concave portion and the lower concave portion via the filling gap, and the dividing line portion that appears on the outer periphery of the combined material is welded, and then the filling gap has good corrosion resistance and wear resistance. After filling the alloy powder, degassing and sealing, and performing hot isostatic pressing, the combined material is placed on the front end face of the product mold,
This is a method of cutting along the surfaces corresponding to the rear end face and the split surfaces of both side molds to obtain a pair of upper and lower, left and right materials, take out a core mold, and finish each material.
【０００４】この方法では、中子型とＨＩＰ処理により
緻密固化された合金粉末ライニング層とは拡散接合せ
ず、両者は自然に分離され、上凹部および下凹部に樹脂
成形流路に近似した３次元内面を備えた複合素材を形成
でき、成形流路面の加工をほとんど省略できる。しか
も、１回のＨＩＰ処理で金型の素材４個を１度に得るこ
とができ、経済的に優れる。勿論、樹脂成形流路に形成
された内面は、厚肉で１００％緻密な耐食性、耐摩耗性
の良好なライニング層が強固に接合被覆されているた
め、メッキの場合に生じた不都合をすべて解消できるも
のであった。In this method, the core mold and the alloy powder lining layer which has been densely solidified by the HIP treatment are not diffusion-bonded, but are naturally separated from each other, and the upper concave portion and the lower concave portion approximate to the resin molding flow path. A composite material having a two-dimensional inner surface can be formed, and processing of the molding flow path surface can be almost omitted. Moreover, four mold materials can be obtained at one time by one HIP process, which is economically excellent. Of course, the inner surface formed in the resin molding flow path is firmly covered with a thick, 100% dense lining layer with good corrosion resistance and good abrasion resistance, eliminating all inconveniences caused by plating. I could do it.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ＨＩＰ
処理による異材種の接合においては、ＨＩＰ時の冷却過
程で接合材質間の熱膨張率の差により応力が発生する。
上述の技術により製造される樹脂シート成形用金型はシ
ートの生産性の点から長尺形状で長さが１ｍから長いも
のでは４ｍ近いものもある。このような形状では、先の
発生応力によりＨＩＰ処理後の素材は容易に変形を生
じ、変形を見込んだ機械加工代を素材につける必要があ
り、材料歩留りを低下させる。SUMMARY OF THE INVENTION However, HIP
In the joining of dissimilar materials by processing, stress is generated due to a difference in the coefficient of thermal expansion between joining materials in a cooling process during HIP.
Some resin sheet molding dies manufactured by the above-described technique have a long shape and have a length of 1 m to as long as about 4 m in terms of sheet productivity. In such a shape, the material after the HIP processing is easily deformed by the previously generated stress, and it is necessary to provide a machining allowance to the material in anticipation of the deformation, which lowers the material yield.
【０００６】又、機械加工時においても残留応力のバラ
ンスが変化し、変形を生じ、高寸法精度を必要とする本
金型での寸法精度の確保が困難となる。本発明はかかる
問題点を解決するためになされたものであって、金型素
材に熱膨張率の異なる材質のライニング材をＨＩＰ処理
により拡散接合した場合でも、変形を防止し、材料歩留
りを低下することなく高寸法精度を確保した金型を得る
方法を提供することを目的とする。[0006] Further, even during machining, the balance of residual stress changes, causing deformation, and it is difficult to secure dimensional accuracy with the present mold requiring high dimensional accuracy. The present invention has been made in order to solve such a problem, and even when a lining material having a different coefficient of thermal expansion is diffusion-bonded to a mold material by HIP processing, deformation is prevented and material yield is reduced. It is an object of the present invention to provide a method for obtaining a mold having high dimensional accuracy without performing the above.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
になされた本発明の金型の製造方法は、金型の樹脂成形
流路にＨＩＰにより任意の厚みで耐食性、耐摩耗性合金
粉末、及びそれら合金緻密体を接合した樹脂シート成形
用の製造方法において金型本体の材質を２相合金とし、
ＨＩＰ中での拡散接合が終了した後、本体の合金相量を
調整する熱処理を行うことを発明の構成とするものであ
る。In order to achieve the above object, a method for manufacturing a mold according to the present invention comprises a method of forming a corrosion-resistant and abrasion-resistant alloy powder having a desired thickness by a HIP in a resin molding flow path of a mold; And in a method for forming a resin sheet in which these dense alloys are joined, the material of the mold body is a two-phase alloy,
After the diffusion bonding in the HIP is completed, a heat treatment for adjusting the amount of the alloy phase of the main body is performed.
【０００８】すなわち、請求項１に係る本発明は、上部
素材２と下部素材３とを重ね合わせている合わせ材に、
成形流路にほぼ等しい外形とされかつ離型処理した中子
型１を内装してカプセル４を製作し、該カプセル４にお
ける前記中子型１の外面と前記上・下部素材２，３の内
面との隙間８に耐食性および耐摩耗性の良好なライニン
グ用粉末１７を充填し脱気密封して熱間等方圧加圧処理
を施すことにより、前記ライニング用粉末１７を上・下
部素材２，３の内面に拡散接合して樹脂をシート状に成
形するための成形流路を形成しているシート成形用金型
の製造法において、前記上・下部素材２，３の材質を２
相合金とし、前記拡散接合が終了した後、前記合金相量
を調整する熱処理を施すことを特徴とするものである。That is, according to the first aspect of the present invention, a laminated material in which the upper material 2 and the lower material 3 are overlapped with each other,
A capsule 4 is manufactured by mounting a core mold 1 having an outer shape substantially equal to that of a molding flow path and subjected to a mold release treatment, and an outer surface of the core mold 1 and inner surfaces of the upper and lower materials 2 and 3 in the capsule 4. The lining powder 17 is filled with the lining powder 17 having good corrosion resistance and abrasion resistance, degassed and sealed, and subjected to a hot isostatic pressing process, thereby bringing the lining powder 17 into upper and lower materials 2. In a method for manufacturing a sheet molding die having a molding flow path for forming a resin into a sheet by diffusion bonding to the inner surface of the upper and lower members 2, 3
After the diffusion bonding is completed, a heat treatment for adjusting the amount of the alloy phase is performed.
【０００９】請求項２に係る本発明では、前記請求項１
に係る発明において、前記上・下部素材２，３の材質が
フェライト／オーステナイトの２相合金であり、前記熱
処理がフェライト／オーステナイトのいずれか一方の相
量を調整するものであることを特徴とするものである。
請求項３に係る本発明では、前記請求項１，２に係る発
明において、前記熱処理を、熱間等方圧加圧装置の処理
室１８又は該処理室１８から取出して別の炉１９で行う
ことを特徴とするものである。[0009] In the present invention according to claim 2, the above-mentioned claim 1 is provided.
In the invention according to the invention, the material of the upper and lower materials 2 and 3 is a two-phase alloy of ferrite / austenite, and the heat treatment adjusts the phase amount of either ferrite / austenite. Things.
According to a third aspect of the present invention, in the first and second aspects of the invention, the heat treatment is performed in the processing chamber 18 of the hot isostatic pressing apparatus or in another furnace 19 which is taken out of the processing chamber 18. It is characterized by the following.
【００１０】請求項４に係る本発明では、前記請求項１
〜３に係る発明において、前記熱処理を施した後、前記
カプセル４を製品金型の前・後端面の分割面に対応した
面に沿って切断して上下金型用素材を得、前記中子型１
を取出して各素材を仕上加工することを特徴とするもの
である。[0010] In the present invention according to claim 4, according to claim 1 of the present invention.
In the inventions according to any one of (1) to (3), after performing the heat treatment, the capsule 4 is cut along a surface corresponding to a division surface of a front end and a rear end of a product mold to obtain a material for upper and lower molds. Type 1
It is characterized by taking out and finishing each material.
【００１１】[0011]
【作用】次に図４および図５を参照して作用を説明す
る。図４は簡便の為に、長さ１５００ｍｍ、厚み３０ｍ
ｍの金型（被接合材）の樹脂成形流路として４．５ｍｍ
の異材質（接合材）をＨＩＰ処理により拡散接合した場
合の、接合材と被接合材との熱膨張率差と長さ方向での
変化（曲がり）量との関係を表したもので、両材質間の
熱膨張率差が僅か０．５×１０-6であっても３．５ｍｍ
の変形を生じ、変形を防止するには限りなく熱膨張率差
を減少させる必要があることが理解される。The operation will now be described with reference to FIGS. FIG. 4 is 1500 mm long and 30 m thick for simplicity.
4.5 mm as resin molding flow path of m mold (material to be joined)
It shows the relationship between the difference in the coefficient of thermal expansion between the joining material and the material to be joined and the amount of change (bending) in the length direction when the dissimilar materials (joining material) are subjected to diffusion joining by HIP processing. 3.5mm even if the difference in thermal expansion coefficient between materials is only 0.5 × 10 -6
It is understood that it is necessary to reduce the difference in coefficient of thermal expansion as much as possible to prevent the deformation and prevent the deformation.
【００１２】図５は２相合金のフェライト／オーステナ
イトの相量の変化による熱膨張率の変化を表す。この場
合、同一材料でもフェライト／オーステナイトの相量に
より熱膨張率が変化することが理解される。これらのこ
とから、図５に表すように接合材の熱膨張率と同一な金
型素材すなわち２相合金のフェライト／オーステナイト
の相量を予め設定し、熱処理によりこの相量を調整すれ
ば任意の接合材と同一の熱膨張率を有する被接合材の組
合せでのＨＩＰ処理が可能となり、変形の防止が可能と
なる。FIG. 5 shows a change in the coefficient of thermal expansion due to a change in the amount of ferrite / austenite in a two-phase alloy. In this case, it is understood that the coefficient of thermal expansion varies depending on the amount of the ferrite / austenite phase even with the same material. From these facts, as shown in FIG. 5, the amount of the ferrite / austenite phase of the mold material, that is, the two-phase alloy, which is the same as the thermal expansion coefficient of the joining material is set in advance, and this phase amount is adjusted by heat treatment. HIP processing can be performed with a combination of materials to be joined having the same coefficient of thermal expansion as the joining material, and deformation can be prevented.
【００１３】ここで、２相合金フェライト／オーステナ
イトの相量は熱処理条件により変化することから、予め
用いる合金の熱処理条件とフェライト／オーステナイト
の相量及び熱膨張率の関係を調べておくことが必要であ
る。従って、中子型１およびライニング粉末１７が収納
され、脱気密封された上部素材２および下部素材３から
なるカプセル４は、ＨＩＰ処理により、ライニング粉末
１７が焼結一体化してライニング層が形成されると共
に、上部素材２の上凹部９および下部素材３の下凹部１
０の内面に拡散接合する。この際、中子型１は上部およ
び下部素材よりも熱膨張率の大きい金属材で形成されて
おり、かつその表面には耐熱性離型材が塗布されている
ので、中子型とライニング層とは拡散接合することな
く、また、冷却時に中子型が上部素材や下部素材より大
きく収縮し、ライニング層と自然に剥離する。尚、ライ
ニング層は上凹部および下凹部に拡散接合しており、上
部および下部素材の収縮に従って収縮するが、該両素材
２，３は２相合金よりなり前記拡散接合が終了した後、
合金相量を調整する熱処理を施すことにより、熱膨張差
に起因する曲がり変形は少なくなる。Here, since the amount of the two-phase alloy ferrite / austenite varies depending on the heat treatment conditions, it is necessary to examine in advance the relationship between the heat treatment conditions of the alloy used, the amount of ferrite / austenite phase and the coefficient of thermal expansion. It is. Accordingly, in the capsule 4 containing the core mold 1 and the lining powder 17 and formed of the upper material 2 and the lower material 3 which are degassed and sealed, the lining powder 17 is sintered and integrated by the HIP process to form a lining layer. And the upper recess 9 of the upper material 2 and the lower recess 1 of the lower material 3
Diffusion bonding is performed on the inner surface. At this time, since the core mold 1 is formed of a metal material having a larger coefficient of thermal expansion than the upper and lower materials, and the surface thereof is coated with a heat-resistant release material, the core mold, the lining layer, Does not undergo diffusion bonding, and upon cooling, the core mold shrinks more than the upper and lower materials and spontaneously separates from the lining layer. The lining layer is diffusion-bonded to the upper and lower recesses and contracts in accordance with the contraction of the upper and lower materials. However, after the two materials 2 and 3 are made of a two-phase alloy and the diffusion bonding is completed,
By performing the heat treatment for adjusting the amount of the alloy phase, the bending deformation due to the difference in thermal expansion is reduced.
【００１４】[0014]
【実施例】以下、図１および図３を参照して本発明実施
例を説明する。図３は成形流路形成用の中子型１を配設
した上型製作用上部素材２を示しており、図１（Ａ）は
下型製作用の下部素材３を、前記中子型１を備えた上部
素材２に重ね合わせたＨＩＰ処理用のカプセル４の断面
図を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 3 shows an upper mold manufacturing upper material 2 provided with a core mold 1 for forming a molding flow path. FIG. 1 (A) shows the lower material 3 for lower mold manufacturing in the core mold 1. 1 shows a cross-sectional view of a capsule 4 for HIP processing superimposed on an upper material 2 provided with.
【００１５】前記中子型１は、ＳＵＳ３０４ステンレス
鋼厚板を素材とし、これに固定用の頭部６および製品金
型の成形流路にほぼ近似した三次元凸形状を有する本体
部７をＮＣミーリング加工によって形成したものであ
る。本体部７の加工に際しては、製品成形流路に可及的
に近似した寸法にＨＩＰ成形するため、上部および下部
素材２，３の材質との室温−ＨＩＰ処理温度における相
対的熱膨張率を考慮した。The core mold 1 is made of a SUS304 stainless steel thick plate, and has a fixing head 6 and a main body 7 having a three-dimensional convex shape substantially similar to a molding flow path of a product mold. It is formed by milling. In processing the main body 7, the relative thermal expansion coefficient between the upper and lower materials 2 and 3 at room temperature-HIP processing temperature is considered in order to perform the HIP molding to a dimension as close as possible to the product forming flow path. did.
【００１６】また、本体部７の表面粗度は、機械加工で
Ｒｍａｘ１０〜６Ｓに加工した後、全面に研磨で加工目
的をつぶして３〜４Ｓにし、更に電解研磨を施して最終
的にＲｍａｘ１Ｓ以下にした。一方、上部および下部素
材２，３は上型および下型の成形流路に対応した中子型
本体部７の上半分および下半分をライニング用粉末の充
填用隙間８を介して収納するための上凹部９および下凹
部１０が両素材の合わせ面にＮＣミーリング加工によっ
て形成されており、また中央上部には前記中子型１の頭
部６を嵌合固定するための凹部１１が設けられている。
更に上凹部９の下縁には、中子型本体部７の下縁を下部
素材３の合わせ面との間で摺動自在に保持するための段
部１２が設けられており、該段部１２は、ＨＩＰ時に中
子型１に生じる上下方向の伸びを許容できる長さに形成
されている。The surface roughness of the main body 7 is Rmax 10 to 6S after machining, the whole surface is polished to 3 to 4S by grinding, and further subjected to electrolytic polishing to finally Rmax 1S or less. I made it. On the other hand, the upper and lower materials 2 and 3 are for accommodating the upper half and the lower half of the core body 7 corresponding to the molding flow paths of the upper mold and the lower mold via the gap 8 for filling the lining powder. An upper concave portion 9 and a lower concave portion 10 are formed on the mating surface of the two materials by NC milling, and a concave portion 11 for fitting and fixing the head 6 of the core mold 1 is provided at the upper center. I have.
Further, a step 12 for slidably holding the lower edge of the core body 7 with the mating surface of the lower material 3 is provided at the lower edge of the upper recess 9. Reference numeral 12 is formed to have a length that allows vertical extension of the core 1 during HIP.
【００１７】ここで、上部および下部素材２，３の材質
は例えば、フェトライト／オーステナイトの２相合金を
用いている。ライニング粉末充填用隙間の間隔８は、製
品金型のライニング層の厚さを粉末充填率（０．７程
度）で除した値とすればよい。例えば、製品のライニン
グ厚さを３ｍｍとすれば、充填用隙間８の幅（厚さ）は
約４．５ｍｍとすればよい。尚、１３はライニング用粉
末の供給孔である。また、上部および下部素材の合わせ
面の側部および下部周縁には、両素材を正確に重ね合わ
せるための嵌合用段部（図示省略）がはめ合い公差ｅ７
〜ｅ８で形成されている。Here, as the material of the upper and lower materials 2 and 3, for example, a two-phase alloy of fetolite / austenite is used. The spacing 8 of the lining powder filling gap may be a value obtained by dividing the thickness of the lining layer of the product die by the powder filling rate (about 0.7). For example, if the lining thickness of the product is 3 mm, the width (thickness) of the filling gap 8 may be about 4.5 mm. Reference numeral 13 denotes a supply hole for the lining powder. In addition, a fitting step (not shown) for accurately overlapping the two materials is fitted on the side and the lower periphery of the mating surface of the upper and lower materials, and the tolerance e7 is fitted.
To e8.
【００１８】前記中子型１と上部および下部素材２，３
との組み立てに際し、まず中子型１を脱脂し、本体部７
の全面に耐熱性離型材を塗布する。耐熱性離型材として
は、アルミナやジルコニア等の高融点酸化物粉末を骨材
とし、これに無機質バインダーを加えたものが使用され
る。塗布に際しては、水などの溶媒を加えて希釈し、ス
プレー塗布するとよい。塗布厚さは、ライニング層との
離型のためには、０．０５ｍｍ〜０．５ｍｍでよいが、
中子型の下縁はＨＩＰ処理の昇温時に段部内で摺動する
ため、０．５ｍｍ〜１．０ｍｍ程度とするのがよい。
尚、段部の隙間は、耐熱性離型材の塗布厚さを見込んだ
大きさに形成しておく。The core 1 and the upper and lower materials 2 and 3
When assembling, the core mold 1 is first degreased, and the
A heat-resistant release material is applied to the entire surface of the substrate. As the heat-resistant release material, a material obtained by using a high melting point oxide powder such as alumina or zirconia as an aggregate and adding an inorganic binder thereto is used. Upon application, it may be diluted by adding a solvent such as water and spray-applied. The coating thickness may be 0.05 mm to 0.5 mm for release from the lining layer,
Since the lower edge of the core mold slides in the step portion when the temperature of the HIP process is increased, it is preferable to set the lower edge to about 0.5 mm to 1.0 mm.
The gap between the steps is formed in a size that allows for the thickness of the heat-resistant release material to be applied.
【００１９】次に、中子型１を上凹部９および下凹部１
０に収納した状態で上部および下部素材２，３を重ね合
わせて両者を嵌合する。これによって、カプセル４には
中子型本体部７と上凹部９および下凹部１０との間にラ
イニング粉末充填隙間８からなるキャビティが形成され
ると共に、上凹部９の下部の段部１２は下部素材３の合
わせ面に塞がれて摺動溝１４となり、該摺動溝１４に中
子型本体部７の縁が差し込まれた状態となる。Next, the core mold 1 is placed in the upper concave portion 9 and the lower concave portion 1.
The upper and lower materials 2 and 3 are overlapped in a state where they are housed in 0, and they are fitted together. As a result, a cavity comprising the lining powder filling gap 8 is formed in the capsule 4 between the core mold body 7 and the upper concave portion 9 and the lower concave portion 10, and the step 12 below the upper concave portion 9 is formed in the lower portion. The sliding surface is closed by the mating surface of the material 3, and the edge of the core body 7 is inserted into the sliding groove 14.
【００２０】その後、カプセル４の供給孔１３よりライ
ニング用粉末１７を充填し、４００℃程度まで脱気しつ
つ加熱し、供給孔１３を密封した後、図１（Ｂ）で示す
ＨＩＰ装置の処理室１８内で９６０℃×１０００ｋｇ／
ｃｍ2 のＨＩＰ条件で４時間保持したＨＩＰ処理を行う
ことによってライニング粉末を上部および下部素材２，
３の内面に拡散接合させ得た。After that, the lining powder 17 is filled from the supply hole 13 of the capsule 4 and heated while being evacuated to about 400 ° C. to seal the supply hole 13 and then treated by the HIP apparatus shown in FIG. 960 ℃ × 1000kg / in the room 18
The lining powder was subjected to HIP treatment for 4 hours under the HIP condition of 2 cm 2 so that the lining powder was
Diffusion bonding was possible on the inner surface of No. 3.
【００２１】本発明においては、前記拡散接合が終了し
た後、ＨＩＰ装置の処理室１８からカプセル４を取出
し、図１（Ｂ）で示す炉１９内で大気中で１０００℃〜
１１００℃で３時間の熱処理を行った。この熱処理は、
上部および下部素材２，３のフェライト／オーステナイ
トの相量を調整して熱膨張率の差に起因する曲がり量を
おさえるものである。In the present invention, after the above-mentioned diffusion bonding is completed, the capsule 4 is taken out of the processing chamber 18 of the HIP apparatus, and is heated to 1000 ° C. in air in a furnace 19 shown in FIG.
Heat treatment was performed at 1100 ° C. for 3 hours. This heat treatment
By controlling the amount of ferrite / austenite phases of the upper and lower materials 2 and 3, the amount of bending caused by the difference in the coefficient of thermal expansion is suppressed.
【００２２】熱処理後、図３で示すようにカプセル４を
製品金型の前端面、後端面および両側型の分割面に対応
した面（図３のＸ−Ｘ，Ｙ−Ｙ，Ｚ−Ｚ）に沿って切断
し、上下一対の上型用および下型用素材、並びに左右一
対の側型用素材を得る。中子型本体部７は上型用および
下型用素材から自然に分離脱型され、成形流路形成面の
表面粗度はＲｍａｘ３〜６Ｓであった。各素材は、仕上
加工が施され、製品部品となる。特に、前記成形流路形
成面は、ダイヤモンド砥粒によるポリッシング加工によ
り、０．０５〜０．０７Ｓの鏡面に加工することができ
た。After the heat treatment, as shown in FIG. 3, the capsule 4 is placed on the front end face, the rear end face, and the surfaces corresponding to the divided surfaces of the both molds (XX, YY, ZZ in FIG. 3). To obtain a pair of upper and lower upper and lower mold materials and a pair of left and right side mold materials. The core body 7 was naturally separated and removed from the upper and lower mold materials, and the surface roughness of the molding channel forming surface was Rmax 3 to 6S. Each material is subjected to finish processing to become a product part. In particular, the forming channel forming surface could be processed to a mirror surface of 0.05 to 0.07 S by polishing using diamond abrasive grains.
【００２３】次に具体的な本発明の実施例と従来法とを
図２（Ａ）（Ｂ）（Ｃ）および表１を参照して対比説明
する。金型本体材質としてＳＣＭ４４０、ＳＵＳ３２９
Ｊ１、ライニング材としてＡ材（Ｎｉ−１７．５ｗｔ％
Ｃｒ−２４ｗｔ％Ｍｏ−３．６ｗｔ％Ｂ−３ｗｔ％Ｓｉ
−１ｗｔ％Ｃｕ）、Ｂ材（Ｎｉ−３４ｗｔ％Ｃｒ−２ｗ
ｔ％Ｍｏ−３ｗｔ％Ｂ−４．３ｗｔ％Ｓｉ−４ｗｔ％Ｗ
−４．５ｗｔ％Ｆｅ−１ｗｔ％Ｃｕ−２ｗｔ％Ｎｂ）、
Ｃ材（Ｆｅ−１．２Ｃ−１８Ｃｒ−１Ｖ）を用いて上記
製造工程で図２（Ａ）（Ｂ）（Ｃ）に示す寸法のシート
成形用金型素材３０を製作した。なお、素材３０の一面
にはライニング層３１をＨＩＰ処理により拡散接合して
おり、表１に示す試作Ｎｏ１〜８はすべて同一寸法であ
る。Next, specific embodiments of the present invention and a conventional method will be described with reference to FIGS. 2A, 2B and 2C and Table 1. FIG. SCM440, SUS329 as mold body material
J1, A material (Ni-17.5wt%) as lining material
Cr-24wt% Mo-3.6wt% B-3wt% Si
-1wt% Cu), B material (Ni-34wt% Cr-2w)
t% Mo-3wt% B-4.3wt% Si-4wt% W
-4.5 wt% Fe-1 wt% Cu-2 wt% Nb),
Using the C material (Fe-1.2C-18Cr-1V), a sheet forming die material 30 having the dimensions shown in FIGS. In addition, the lining layer 31 is diffusion-bonded to one surface of the raw material 30 by the HIP process, and all the prototypes No. 1 to 8 shown in Table 1 have the same dimensions.
【００２４】表１に金型本体材質とライニング材の組み
合わせ、及びＨＩＰ処理後の熱処理条件を示す。Table 1 shows combinations of the material of the mold body and the lining material, and the heat treatment conditions after the HIP treatment.
【００２５】[0025]
【表１】 [Table 1]
【００２６】ＨＩＰ、熱処理後、両端を切断し、図２
（Ｂ）の矢印ｔで示した寸法を測定し、表１の変形量欄
に示す。従来法としての本体材質がＳＣＭ４４０、ライ
ニング材がＡ材でＨＩＰ後に熱処理を行わなかった場合
での変形量と、本発明での本体材質がＳＵＳ３２９Ｊ
１、ライニング材がＡ材でＨＩＰ後に適切な熱処理が行
われた場合での変形量との比較で明確なように、本発明
方法により得られる金型素材のほうが変形が小さく、歩
留り良く製造することが可能となったものである。After HIP and heat treatment, both ends are cut off, and FIG.
The dimensions indicated by the arrow t in (B) were measured and are shown in the deformation amount column of Table 1. The deformation amount when the body material is SCM440 and the lining material is A material and the heat treatment is not performed after HIP as the conventional method, and the body material in the present invention is SUS329J
1. As is clear from the comparison with the amount of deformation in the case where the lining material is material A and the appropriate heat treatment is performed after HIP, the mold material obtained by the method of the present invention has less deformation and is manufactured with a high yield. It is now possible.
【００２７】なお、本発明においては、ＨＩＰ処理後の
熱処理をＨＩＰ装置内で実施することもでき、また、フ
ェライト／オーステナイトの２相合金においてフェライ
トの相量を調整することもできる。更に、金型本体（素
材）の材質としては、フェライト／オーステナイトの２
相合金以外のものであってもよい。In the present invention, the heat treatment after the HIP treatment can be performed in a HIP apparatus, and the amount of ferrite in a ferrite / austenite two-phase alloy can be adjusted. Further, as the material of the mold body (material), two of ferrite / austenite are used.
Other than the phase alloy may be used.
【００２８】[0028]
【発明の効果】以上詳述した通り本発明によれば、金型
素材とは熱膨張率の異なる材質のライニング材をＨＩＰ
処理によって拡散接合した場合でも、変形を防止し、材
料歩留りを低下することなく高寸法精度を確保したシー
ト成形用金型を得ることができる。As described above in detail, according to the present invention, a lining material having a different coefficient of thermal expansion from that of the mold material is obtained by HIP.
Even when diffusion bonding is performed by the treatment, it is possible to obtain a sheet molding die that prevents deformation and ensures high dimensional accuracy without lowering the material yield.
【図１】本発明方法の実施例を示し、（Ａ）はカプセル
の断面図、（Ｂ）は製造工程図である。1A and 1B show an embodiment of the method of the present invention, wherein FIG. 1A is a cross-sectional view of a capsule, and FIG.
【図２】本発明方法と従来例方法とを対比するための試
作素材を示し、（Ａ）は平面図、（Ｂ）は曲がり量の説
明図、（Ｃ）は側面図である。FIGS. 2A and 2B show prototype materials for comparing the method of the present invention with the conventional example method, wherein FIG. 2A is a plan view, FIG. 2B is an explanatory diagram of a bending amount, and FIG.
【図３】本発明方法に用いるカプセルの平面図である。FIG. 3 is a plan view of a capsule used in the method of the present invention.
【図４】熱膨張率の差と曲がり量との関係を示すグラフ
である。FIG. 4 is a graph showing the relationship between the difference in the coefficient of thermal expansion and the amount of bending.
【図５】２相合金中のオーステナイト量と熱膨張係数の
関係を示すグラフである。FIG. 5 is a graph showing the relationship between the amount of austenite in a two-phase alloy and the coefficient of thermal expansion.
１ 中子型 ２ 上部素材 ３ 下部素材 ４ カプセル ８ 隙間 １７ ライニング粉末 Reference Signs List 1 core type 2 upper material 3 lower material 4 capsule 8 gap 17 lining powder
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅田 孝一 兵庫県高砂市荒井町新浜２丁目３番１号 株式会社神戸製鋼所 高砂製作所内 (56)参考文献 特開 平４−336223（ＪＰ，Ａ) 特開 平６−179234（ＪＰ，Ａ) 特開 昭62−294106（ＪＰ，Ａ) 特開 平７−108557（ＪＰ，Ａ) 特開 平６−304992（ＪＰ，Ａ) 特開 平５−338009（ＪＰ，Ａ) 特開 平４−41606（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 47/00 - 47/96 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Umeda 2-3-1, Shinhama, Arai-machi, Takasago-shi, Hyogo Kobe Steel, Ltd. Inside Takasago Works (56) References JP-A-4-336223 (JP, A) JP-A-6-179234 (JP, A) JP-A-62-294106 (JP, A) JP-A-7-108557 (JP, A) JP-A-6-304992 (JP, A) JP-A-5-338009 (JP, A) JP-A-4-41606 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 47/00-47/96
Claims (4)
ね合わせている合わせ材に、成形流路にほぼ等しい外形
とされかつ離型処理した中子型（１）を内装してカプセ
ル（４）を製作し、該カプセル（４）における前記中子
型（１）の外面と前記上・下部素材（２）（３）の内面
との隙間（８）に耐食性および耐摩耗性の良好なライニ
ング用粉末（１７）を充填し脱気密封して熱間等方圧加
圧処理を施すことにより、前記ライニング用粉末（１
７）を上・下部素材（２）（３）の内面に拡散接合して
樹脂をシート状に成形するための成形流路を形成してい
るシート成形用金型の製造法において、 前記上・下部素材（２）（３）の材質を２相合金とし、
前記拡散接合が終了した後、前記合金相量を調整する熱
処理を施すことを特徴とするシート成形用金型の製造
法。1. A core material (1) having an outer shape substantially equal to a molding channel and having been subjected to a release treatment is provided inside a laminated material in which an upper material (2) and a lower material (3) are overlapped. A capsule (4) is manufactured, and a corrosion resistance and abrasion resistance are formed in a gap (8) between the outer surface of the core mold (1) and the inner surfaces of the upper and lower materials (2) and (3) in the capsule (4). The lining powder (1) is filled with a good lining powder (17), degassed and sealed, and subjected to hot isostatic pressing.
7) A method of manufacturing a sheet molding die, wherein diffusion molding is performed on the inner surfaces of the upper and lower materials (2) and (3) to form a molding flow path for molding a resin into a sheet. The material of the lower material (2) (3) is a two-phase alloy,
After the diffusion bonding is completed, a heat treatment for adjusting the amount of the alloy phase is performed.
フェライト／オーステナイトの２相合金であり、前記熱
処理がフェライト／オーステナイトのいずれか一方の相
量を調整するものであることを特徴とする請求項１記載
のシート成形用金型の製造法。2. The method according to claim 1, wherein the material of the upper and lower materials (2) and (3) is a two-phase alloy of ferrite / austenite, and the heat treatment adjusts the phase amount of either ferrite / austenite. The method for manufacturing a sheet molding die according to claim 1, wherein:
理室（１８）又は該処理室（１８）から取出して別の炉
（１９）で行うことを特徴とする請求項１又は２に記載
のシート成形用金型の製造法。3. The heat treatment according to claim 1, wherein the heat treatment is performed in a processing chamber of a hot isostatic pressing apparatus or in another furnace taken out of the processing chamber. 3. The method for producing the sheet molding die according to 2.
（４）を製品金型の前・後端面の分割面に対応した面に
沿って切断して上下金型用素材を得、前記中子型（１）
を取出して各素材を仕上加工することを特徴とする請求
項１〜３のいずれかに記載のシート成形用金型の製造
法。4. After performing the heat treatment, the capsule (4) is cut along a surface corresponding to a divided surface of front and rear end surfaces of a product mold to obtain upper and lower mold materials. Type (1)
The method for manufacturing a sheet forming die according to any one of claims 1 to 3, wherein the material is taken out and each material is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09101895A JP3212477B2 (en) | 1995-04-17 | 1995-04-17 | Manufacturing method of sheet molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09101895A JP3212477B2 (en) | 1995-04-17 | 1995-04-17 | Manufacturing method of sheet molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08281768A JPH08281768A (en) | 1996-10-29 |
| JP3212477B2 true JP3212477B2 (en) | 2001-09-25 |
Family
ID=14014831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09101895A Expired - Fee Related JP3212477B2 (en) | 1995-04-17 | 1995-04-17 | Manufacturing method of sheet molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3212477B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011235500A (en) * | 2010-05-07 | 2011-11-24 | Hirai Kogyo Kk | Resin sheet mold and its manufacturing method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129622A1 (en) * | 2007-04-09 | 2008-10-30 | Toshiaki Kitazawa | Method of bonding steel members, method of enhancing bond strength of bonded object comprising steel members, and steel product |
| WO2009034656A1 (en) * | 2007-09-14 | 2009-03-19 | Seiko Epson Coporation | Joined material, steel product and diecast product |
| WO2009034655A1 (en) * | 2007-09-14 | 2009-03-19 | Seiko Epson Coporation | Joined material, steel product and diecast product |
| WO2009034657A1 (en) * | 2007-09-14 | 2009-03-19 | Seiko Epson Coporation | Joined material and steel product |
| JP5198458B2 (en) * | 2007-09-14 | 2013-05-15 | セイコーエプソン株式会社 | Method for joining steel members, method for strengthening joining force in joined bodies composed of steel members, steel products and die-cast products |
| JP4882017B2 (en) * | 2010-07-13 | 2012-02-22 | 平井工業株式会社 | Coating die and manufacturing method thereof |
| JP4866472B1 (en) * | 2010-07-13 | 2012-02-01 | 平井工業株式会社 | Die and manufacturing method thereof |
| TWI520832B (en) * | 2010-07-13 | 2016-02-11 | Hirai Kogyo Corp | Mold and its manufacturing method |
| WO2014061144A1 (en) * | 2012-10-18 | 2014-04-24 | 株式会社 旭 | Method for manufacturing composite metal material, method for manufacturing metal mold, method for manufacturing metal product, and composite metal material |
-
1995
- 1995-04-17 JP JP09101895A patent/JP3212477B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011235500A (en) * | 2010-05-07 | 2011-11-24 | Hirai Kogyo Kk | Resin sheet mold and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08281768A (en) | 1996-10-29 |
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