ผลการค้นหา

Burnishing 2

แปลว่า(english) Smoothing surfaces through friction between the material and material such as hardened metal media.

Burn

แปลว่า(english) 1) Process of cutting metal by a stream of fuel and oxygen, 2) to permanently damage a metal or alloy by heating to cause either incipient melting or intergranular oxidation.

Blue Vitriol Copper sulfate

แปลว่า(english) A layout solution which turns a copper color when applied to a clean,polished metal surface.

Bath

แปลว่า(english) Molten metal on the hearth of a furnace, in a crucible, or in a ladle

Bedding

แปลว่า(english) Sinking a pattern down into the sand to the desired position and ramming the sand around it.

Backward Extrusion

แปลว่า(english) Forcing metal to flow in a direction opposite to the motion of a punch or die.

Burnishing

แปลว่า(english) Developing a smooth finish on a metal by tumbling or rubbing with a polished hand tool.

Back Draft

แปลว่า(english) Reverse taper which would prevent removal of a pattern from a mold or a core from a corebox.

Activation

แปลว่า(english) The changing of the passive surface of a metal to a chemically active state. Contrast with passivation.

Backing Sand

แปลว่า(english) The bulk of the sand in the flask. The sand compacted on top of the facing sand that covers the pattern.

Bridling

แปลว่า(english) The cold working of dead soft annealed strip metal immediately prior to a forming, bending, or drawing operation. A process designed to prevent the formulation of Luder's lines. Caution-Bridled metal should be used promptly and not permitted to (of itself) return to its pre-bridled condition.

Blowhole 2

แปลว่า(english) A cavity which was produced during the solidification of metal by evolved gas, which in failing to escape is held in pockets.