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ค้นเจอ 24 รายการ

Break Test (for tempered steel)

(english) A method of testing hardened and tempered high carbon spring steel strip wherein the specimen is held and bent across the grain in a vice-like calibrated testing machine. Pressure is applied until the metal fractures at which point a reading is taken and compared with a standard chart of brake limitations for various thickness ranges.

short oil vanish

น้ำมันเคลือบซักแห้งภายใน 2 ช.ม.

short wave radio

วิทยุคลื่นสั้น

Bench Rammer

(english) A short rammer used by bench molders.

short span reinforced concrete

คอนกรีตเสริมเหล็กช่วงสั้น

Black Oil Tempered Spring Steel Strip (Scaleless Blue)

(english) A flat cold rolled usually .70/.80 medium high carbon steel strip, blue-black in color, which has been quenched in oil and drawn to desired hardness. While it looks and acts much like blue tempered spring steel and carries a Rockwell hardness of C44/47, it has not been polished and is lower in carbon content. Used for less exacting requirements than clock spring steel, such as snaps, lock springs, hold down springs, trap springs, etc. It will take a more severe bend before fracture than will clock spring, but it does not have the same degree of spring-back.

long oil vanish

น้ำมันเคลือบ ที่ใช้เวลานาน แห้งประมาณ 6 ชั่วโมง (ตรงข้ามกับ short oil vanish ซึ่งใช้เวลา 2 ชั่วโมงแห้ง)

Non-agitating Unit

(Concrete Engineering) A truck-mounted unit for transporting ready-mixed concrete short distances, not equipped to provide agitation (slow mixing) during delivery.

varnish

น้ำมันวานิชใช้สำหรับชักเงา หรือเคลือบ, เคลือบด้วยน้ำมัน, ทาน้ำมัน oong oil varnish น้ำมันชักเงาที่ใช้เวลาแห้งช้าประมาณ 6 ชั่วโมง short oil warnish น้ำมันชักเงาที่ใช้เวลาแห้งเร็วประมาณ 2 ชั่วโมง

Band Saw Steel (Wood)

(english) A hardened tempered bright polished high carbon cold rolled spring steel strip produced especially for use in the manufacture of band saws for sawing wood, non ferrous metals, and plastics. Usually carries some nickel and with a Rockwell value of approximately C40/45.

Basic Oxygen Process 2

(english) A steel making process wherein oxygen of the highest purity is blown onto the surface of a bath of molten iron contained in a basic lined and ladle shaped vessel. The melting cycle duration is extremely short with quality comparable to Open Hearth Steel.

Bainite

(english) A eutectoid transformation product of ferrite and a fine dispersion of carbide, generally formed at temperatures below 840 to 930 F (450 to 500 C): upper bainite is an aggregate containing parallel lath-shape units of ferrite, produces the so-called feathery appearance in optical microscopy, and is formed at temperatures above about 660 F (350 C); lower bainite consists of individual plate-shape units and is formed at temperatures below about 660 F (350 C). Also, a slender, needle-like (acicular) microstructure appearing in spring steel strip characterized by toughness and greater ductility than tempered Martensite. Bainite is a decomposition product of Austenite best developed at interrupted holding temperatures below those forming fine pearlite and above those giving Martensite.

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