ผลการค้นหา

Blackening Scab

แปลว่า(english) A form of casting defect related to an improper coating rather than to the sand.

Rebound

แปลว่า(Concrete Engineering) Wet shotcrete or sand and cement which bounces away from a surface again at which pneumatically applied mortar is being projected.

Band, Inside

แปลว่า(english) A loose steel frame placed inside a removable flask to reinforce the sand at the parting line after the flask has been removed.

Baked Strength

แปลว่า(english) Compressive, shear, tensile or transverse strength of a mold sand mixture when baked at a temperature above 231 B0F (111 B0C) and then cooled to room temperature.

เครื่องอังทราย

หมายถึง(วิทยา) น. อุปกรณ์ชนิดหนึ่ง ประกอบด้วยถาดบรรจุทราย ใช้สำหรับส่งถ่ายความร้อนให้แก่สิ่งใดสิ่งหนึ่ง โดยวิธีตั้งสิ่งนั้นบนถาดทราย แล้วเผาก้นถาดให้ร้อนจัด. (อ. sand bath).

soil separates

แปลว่าอนุภาคดินแบ่งตามขนาด : อนุภาคของดินที่พิจารณาตามขนาดของมัน แบ่งออกเป็น 3 ชนิด คือ ทราย (sand) ตะกอนดิน (silt) และดินเหนียว (clay) ซึ่งจะมีขนาดตั้งแต่ 2.00 ถึง 0.02 มม. ,0.02 ถึง 0.002 มม. และ 0.002 มม. ลงไป ตามลำดับ

Sacking

แปลว่า(Concrete Engineering) Removing or alleviating defects on a concrete surface by applying a mixture of sand and cement to the moistened surface and rubbing with a coarse material such as burlap.

Blast Cleaning (blasting)

แปลว่า(english) A process for cleaning or finishing metal objects by use of an air jet or centrifugal wheel that propels abrasive particles (grit, sand, or shot) against the surfaces of the workpiece at high velocity.

Abrasive 1

แปลว่า(english) Material for grinding, polishing, blasting, either in loose form or bonded to form wheels, bricks, or files, or applied to paper and cloth by glue or resin. Natural abrasives include emery, corundum, garnet, sand, flint, etc. Metallic shot and grit are also used as abrasives in cleaning castings

Cellular Concrete

แปลว่า(Concrete Engineering) A lightweight product consisting of portland cement, cement-pozzolan, cement sand, lime-pozzolan, or lime-sand pastes, or pastes containing blends of these ingredients and having a homogenous void or cell structure, attained with gas forming chemicals or foaming agents. For cellular concretes, containing binder ingredients other than or in addition to portland cement, autoclave curing is usually employed.

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.