ผลการค้นหา

ค้นเจอ 69 รายการ

Hardware

เครื่องเหล็ก, เครื่องโลหะ [ช่างก่อสร้าง]; ฮาร์ดแวร์ [คอมพิวเตอร์]; ส่วนอุปกรณ์ [วิชาถ่ายภาพ]; ส่วนเครื่อง, ส่วนอุปกรณ์ [การพิมพ์ ]

hard steel

เหล็กกล้าที่ใช้ทำเหล็กเครื่องมือ

hardy hole

(โรงเหล็ก) รูในทั่งตีเหล็ก สำหรับวมสิ่ว ฮาดดิ

harden surface

พื้นหน้าดินแข็ง, พื้นที่อันแน่นและแข็ง

hardness

ความแข็ง

Brown Sharp Gages

(english) A standard series of sizes refered to by numbers, in which the diameter of wire or thickness of sheet metal is generally produced and which is used in the manufacture of brass, bronze, copper, copper-base alloys and aluminum. These gage numbers have a definite relationship to each other. In this system, the decimal thickness is reduced by 50% every six gage numbers- while temper is expressed by the number of B&S gage numbers as cold reduced in thickness from previous annealing. For each B&S gage number in thickness reduction, where is assigned a hardness value of 1/4 hard.

Retardation

(Concrete Engineering) Delaying the hardening or strength gain of fresh concrete, mortar or grout.

Accordion Reed Steel

(english) Hardened, tempered, polished and blued or yellow flat steel with dressed edges. Carbon content about 1.00. Material has to possess good flatness, uniform hardness and high elasticity.

Bright Bessemer Wire

(english) Stiff bright wire of hard temper. Normally wire is drawn down to size without annealing.

Brale

(english) A diamond penetrator, conical in shape, used with a Rockwell hardness tester for hard metals.

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.

Boron Steels

(english) The addition of boron in the range 0.0005-0.005% to certain steels increases the hardenability. A range of boron steels is now listed in the current BS 970 and are widely used for the production of cold headed fastenings.

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