Abstract:
PURPOSE: Provided a paste-phase composition for filling into a joining region of aluminum panels in automobiles, which shows excellent adhesion performance to an aluminum panels. CONSTITUTION: The paste-phase composition comprises 7-15 wt% of an acryl-denatured epoxy, 3-15 wt% of a dimer-denatured epoxy-based resin, 5-20 wt% of a bisphenol-A type epoxy-based resin, 1-3 wt% of a hygroscopic agent, 3-15 wt% of a curing agent and curable accelerator, 15-40 wt% of a filling agent and 3-9 wt% of conductive carbon black, wherein the composition further additionally comprises 5-25 wt% of a nitrile rubber-denatured epoxy-based resin and 10-30 wt% of carboxy terminated butadiene acrylonitrile copolymer(CTBN)-denatured epoxy resin and has a viscosity of 400,000-800,000 cps/20 deg.C.
Abstract:
본 고안은 스폿 용접 강도 평가용 지그에 관한 것으로, 용접될 제1시편(1)을 수납하는 제1수납부(11)와, 일단부가 상기 제1시편(1)의 일단부와 겹쳐지는 제2시편(2)을 수납하는 제2수납부(12)로 구성되고, 상기 제1수납부(11)와 상기 제2수납부(12)는 일체로 형성되며, 상호 겹쳐지는 일단부가 수납되는 상기 제1수납부(11)와 상기 제2수납부(12)의 소정 부위에는 상기 제1시편(1) 및 상기 제2시편(2)의 겹쳐진 부분을 용접하기 위한 상부 전극(3) 및 하부 전극(4)의 용접 위치를 조정하는 위치 조정 구멍(13,14)이 형성되어, 상기 위치 조정 구멍(13,14)에 의해 동일 지점에 용접을 수행할 수 있도록 함으로써, 용접점의 인장 강도 및 전단 강도 측정의 정확성 및 신뢰도를 향상시키도록 한 것이다.
Abstract:
a water tank (2), a jig (4) which holds a piston (3), a lifting device (5) which moves the jig (4) up and down, and a heater (14) for the piston (3). The lifting device (5) is controlled by a thermo-couple (17) signals, and the heater (14) is controlled by a sensor (15) for sensing the lowering of the lifting device.
Abstract:
Disclosed are a nanomulti-layer coating layer, a method and an apparatus for forming the same. The method for forming a nanomulti-layer coating layer by using a physical vapor deposition system having a sputtering apparatus and an arc ion plating apparatus comprises: a first coating step for forming a Mo coating layer on a basic material by using Ar gas and a Mo target of the sputtering apparatus; a nitrating step for forming a nitride thin film formation atmosphere by using N2 gas and Ar gas of the arc ion plating apparatus; a second coating step for forming a nanocomplex coating layer of Cr-Mo-N on the basic material by using Ar gas and the Mo target of the sputtering apparatus, and a Cr source, N2 gas, and Ar gas of the arc ion plating apparatus at the same time; and a multi-coating step for coating the basic material with a multi-layer where the nanocomplex coating layer of Cr-Mo-N and the Mo coating layer are repeated by revolving the basic material around a rotation axis. [Reference numerals] (AA) Start; (BB) End; (S100) First coating step; (S200) Nitrating step; (S300) Second coating step; (S400) Multi-coating step
Abstract:
히팅, 버퍼층 코팅, 코팅, 냉각으로 이루어지는 플라즈마를 이용한 코팅층 형성방법으로서, 모재의 표면에 Ti 아크소스와 Ag 스퍼터링소스를 이용하여 TiAgN 코팅층을 형성하는 코팅단계; 일정시간 동안 바이어스전압과 스퍼터링파워를 상승시켜 표면층의 Ag 분율을 상승시키는 분율상승단계; 및 50~100℃로 일정시간 동안 유지하여 표면층에 Ag 나노입자를 형성하는 나노형성단계;를 포함하는 저마찰 코팅층 형성방법이 소개된다.
Abstract:
PURPOSE: A coating layer surface processing method is provided to improve a property of a surface coating layer, and a property of an abrasion resistance and a low-friction at a high temperature by miniaturizing a surface morphology and increasing Ag content. CONSTITUTION: A coating layer surface processing method comprises the following steps: a coated material is heated up in a chamber; a foreign substance is removed on a surface of the heated coated material; a buffer layer (13) is formed on a surface of the coated material; a coating layer (14) is formed on the buffer layer; a surface property is improved at a high temperature by controlling a work pressure in a coating layer formation; and the coating layer is formed at a range of 15 - 20 mTorr of a work pressure.
Abstract:
PURPOSE: A molding apparatus having a multi-layered surface is provided to ensure improved structural stability and wear resistance because a Mo intermediate layer is formed between a substrate and a CrN-Mo top layer. CONSTITUTION: A molding apparatus having a multi-layered surface comprises a substrate(10), a Mo intermediate layer(20), and a CrN-Mo top layer(30). The Mo intermediate layer is coated on the upper side of the substrate. The CrN-Mo top layer is coated on the upper side of the Mo intermediate layer. The Mo intermediate layer having a thickness of 0.3-0.7μm and a columnar structure is deposited on the substrate with a magnetron sputtering method.