ตัวกรองผลการค้นหา
Bench Work
แปลว่า(english) Work done primarily at a bench with hand tools. Occasionlly suplemented by small power-driven tools.
hand tools
แปลว่าเครื่องมือช่างชนิดใช้ด้วยมือ
right-hand tools
แปลว่า(โรงงาน) เครื่องมือชนิดที่กัดขวา ใช้อยู่ในแท่นกลึง คือจะเจาะหรือคว้าน , กัดเกลียว ฯลฯ จะหมุนจากซ้ายไปขวา
AAC - Autoclaved Aerated Concrete
แปลว่า(Concrete Engineering) Exceptionally lightweight precast concrete with high thermal qualities and fire resistence. Suitable for cutting with ordinary hand tools. Mix design is composed of portland cement, sand or siliceous material, lime, gypsum, finely powdered aluminum, and water. Initial mix is a combination of portland cement, sand, lime and gypsum to produce a slurry. Finely powdered aluminum mixed into a paste is added prior to placement into large, rail-like forms. The finely powdered aluminum reacts with the alkaline components of the cement and lime to produce hydrogen gas, which increases the volume approximately five times producing a uniformly, dispersed cellular structure. Units are cut to required shape. Units are placed in an autoclave, an enclosed pressurized chamber, and steam cured at 3500 F. Approximately 80% of the ultimate volume consists of air voids.