公开(公告)号：KR1020080057002A

公开(公告)日：2008-06-24

申请号：KR1020060130289

申请日：2006-12-19

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 백경호 ,  안지훈 ,  성병근 ,  김진홍

IPC: C23C4/00

Abstract: A method of manufacturing spray formed metal tools is provided to manufacture spray formed metal tools with more increased strength by performing a hot pressing process using a hot press or a hot isostatic press before separating the thermal spray pattern and the thermal spray coating layer from each other after forming a thermal spray coating layer on a thermal spray pattern. A method of manufacturing a spray formed metal tool comprises: a step(S10) of making a thermal spray pattern; a step(S20) of thermal spraying metal onto the thermal spray pattern to form a thermal spray coating layer; a step(S30) of hot pressing the thermal spray pattern having the thermal spray coating layer formed thereon at a temperature of 600 to 900 deg.C; a step(S40) of separating the thermal spray coating layer from the thermal spray pattern; and a step(S50) of back-filling the thermal spray coating layer to manufacture a spray formed metal tool. The thermal spray pattern is made of ceramics or graphite in the step(S10). The metal in the step(S20) is carbon steel, or iron comprising chromium, silicon, and boron(Fe-Cr-Si-B). The hot pressing process in the step(S30) is performed by a hot press for heating and pressing the thermal spray coating layer-formed thermal spray pattern in a vacuum atmosphere, or a hot isostatic press for heating and pressing the thermal spray coating layer-formed thermal spray pattern in an inert gas atmosphere.

Abstract translation: 提供一种制造喷雾成型金属工具的方法，用于通过在将热喷涂图案和热喷涂层彼此分离之前使用热压机或热等静压机进行热压工艺来制造具有更高强度的喷射成形金属工具 在热喷涂图案上形成热喷涂层之后。 一种制造喷涂金属工具的方法包括：制作热喷涂图案的步骤（S10）; 将热喷涂金属喷涂到热喷涂图案上以形成热喷涂层的步骤（S20）; 在600-900℃的温度下热压其上形成有热喷涂层的热喷涂图案的步骤（S30）; 从热喷涂图案分离热喷涂层的步骤（S40）; 以及对热喷涂层进行背面填充以制造喷射成形金属工具的步骤（S50）。 在步骤（S10）中，热喷涂图案由陶瓷或石墨制成。 步骤（S20）中的金属是碳素钢，或含有铬，硅和硼（Fe-Cr-Si-B）的铁。 在步骤（S30）中的热压过程通过热压机在真空气氛中加热和压制热喷涂层形成的热喷涂图案，或热等静压机进行热喷涂层 - 在惰性气体气氛中形成热喷涂图案。

公开(公告)号：KR1020080056997A

公开(公告)日：2008-06-24

申请号：KR1020060130282

申请日：2006-12-19

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 오상록 ,  안지훈 ,  성병근 ,  김진홍

IPC: C23C4/00

Abstract: An apparatus and a method for degassing of back-filling materials for spray formed metal tools are provided to reduce time required for performing a degassing operation and improve compressive strength of the spray formed metal tools by proceeding mixing of the back-filling materials and mixing of a hardening material in a vacuum atmosphere. An apparatus(100) for degassing of back-filling materials(150) for spray formed metal tools comprises: an agitating impeller(110) for agitating back-filling materials or a mixture of the back-filling materials and hardening materials; a vacuum chamber(130) having the agitating impeller mounted on a top part thereof; and a vacuum pump(140) connected to one side of the vacuum chamber. The apparatus further comprises a vessel(120) which is positioned within the vacuum chamber, and in which the back-filling materials are contained. A method for degassing of back-filling materials for spray formed metal tools comprises the steps of: (a) preparing a jig for back-filling a thermal spray coating layer; (b) mixing the back-filling materials under the vacuum atmosphere; (c) injecting hardening materials into the back-filling materials mixed in the step(b); (d) agitating the back-filling materials with the hardening materials under the vacuum atmosphere; and (e) injecting the back-filling materials mixed with the hardening materials into a backside of the thermal spray coating layer fixed by the jig.

Abstract translation: 提供了一种用于喷射成型金属工具的填充材料脱气的装置和方法，以减少进行脱气操作所需的时间，并通过将填充材料的混合和混合的方式改善喷射形成的金属工具的抗压强度 在真空气氛中的硬化材料。 用于喷射成型金属工具的回填材料（150）的脱气装置（100）包括：搅拌叶轮（110），用于搅拌回填材料或者填充材料和硬化材料的混合物; 具有安装在其顶部的搅拌叶轮的真空室（130）; 以及连接到真空室的一侧的真空泵（140）。 该装置还包括位于真空室内的容器（120），并且其中包含背部填充材料。 用于喷射成型金属工具的填充材料的脱气方法包括以下步骤：（a）制备用于回填热喷涂层的夹具; （b）在真空环境下混合回填材料; （c）将硬化材料注入步骤（b）中混合的背部填充材料中; （d）在真空环境下用硬化材料搅拌回填材料; 和（e）将与硬化材料混合的背面填充材料注入由夹具固定的热喷涂层的背面。

公开(公告)号：KR100818312B1

公开(公告)日：2008-04-01

申请号：KR1020060130284

申请日：2006-12-19

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 오상록 ,  안지훈 ,  성병근 ,  김진홍

IPC: C23C4/00

Abstract: A back-filling apparatus of spray formed metal tools and a back-filling method using the same are provided to improve compressive strength by mixing a back-filling material and injecting the mixed back-filling material into a jig in a vacuum atmosphere, thereby preventing bubbles from forming in a back-filling layer. A manufacturing method of a spray formed metal tool by back-filling that fills a backside of a thermal spray coating layer(160) comprises the steps of: coating a thermal spray pattern with the thermal spray coating layer; separating the thermal spray pattern and the thermal spray coating layer; preparing a jig(150) within a vacuum chamber to fix the thermal spray coating layer such that the thermal spray coating layer is back-filled; mixing a back-filling material(115) that is any one selected from an epoxy resin, a mixture of the epoxy resin and a metal powder, and a metallic material; mixing an epoxy hardening material with the mixed back-filling material; injecting the mixed back-filling material into an injection case(110) which adjusts a discharge quantity of the back-filling material by an adjusting valve(120), and freely dropping the injected back-filling material into a vacuum chamber(130) in a vacuum state by a vacuum pump(140) such that the back-filling material is injected onto a backside of the thermal spray coating layer fixed by the jig; hardening the back-filling material stacked on the backside of the thermal spray coating layer; separating a back-filled spray formed metal tool from the jig; cutting the spray formed metal tool to mount the spray formed metal tool on an injection machine or a press machine; and subjecting the spray formed metal tool to heat treatment at a predetermined temperature.

Abstract translation: 提供一种喷射成型金属工具的回填装置及使用其的背面填充方法，以通过混合背面填充材料并将混合的填充材料在真空气氛中注入夹具来提高抗压强度，从而防止 在填充层中形成气泡。 通过填充热喷涂层（160）的背面的反向填充的喷射成形金属工具的制造方法包括以下步骤：用热喷涂层涂覆热喷涂图案; 分离热喷涂图案和热喷涂层; 在真空室内制备夹具（150）以固定热喷涂层，使得热喷涂层被回填; 混合选自环氧树脂，环氧树脂和金属粉末的混合物中的任何一种的填充材料（115）和金属材料; 将环氧硬化材料与混合的填充材料混合; 将混合后填充材料注入到通过调节阀（120）调节填充材料的排出量的注射壳体（110）中，并将注入的填充材料自由地落入真空室（130）中 通过真空泵（140）将真空状态注入到由夹具固定的热喷涂层的背面上; 硬化层叠在热喷涂层的背面上的背面填充材料; 将装有后置喷射的喷射金属工具与夹具分离; 切割喷射形成的金属工具将喷射成型的金属工具安装在注塑机或冲压机上; 并使喷射形成的金属工具在预定温度下进行热处理。