ผลการค้นหา

hot-tempered* *hot-tempered *hot-tempered*

ค้นเจอ 35 รายการ

hot working steel

เหล็กที่ใช้ในงานที่ร้อนจัด เป็นเหล็กที่มีทังสะเต็นอยู่ตั้งแต่ 5 ถึง 15 เปอรเซนต์ โครเมี่ยมพอสมควร และคารบอนปานกลาง เป็นเหล็กที่มีคุณสมบัติทนทานต่อความร้อน จึงนำมาใช้เครื่องมือที่ต้องผ่านความร้อนสูง

asphaltic hot mixed plant

โรงผสมแอสฟัลต์ติกคอนกรีตแบบร้อน

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.

Band Wareroom

(english) A storage area in Strip Steel used for storing hot bands (coil made from slab).

Black Annealing

(english) A process of box annealing or pot annealing ferrous alloy sheet, strip or wire after hot working and pickling.

Burnt Rubber

(english) Small or large black spots that generally show up on surface and are generally caused by pickling steel too hot.

Bright Drawing

(english) The process of drawing hot rolled steel through a die to impart close dimensional tolerances, a bright scale free surface and improved mechanical properties. The product is termed bright steel.

Butt-Weld Pipe

(english) The standard steel pipe used in plumbing. Heated skelp is passed continuously through welding rolls, which form the tube and squeeze the hot edges together to make a solid weld.

Billet

(english) (1) A semi-finished section hot rolled from a metal ingot, with a rectangular cross section usually ranging from 16 to 36 in., the width being less than twice the thickness. Where the cross section exceeds 36 in., the term “bloom” is properly but not universally used. Sizes smaller than 16 in. are usually termed “bars”; a solid semi-finished round or square product which has been hot worked by forging, rolling, or extrusion. (2) A semi-finished, cogged, hot rolled or continuous-cast metal product of uniform section, usually rectangular with radiused corners. Billets are relatively larger than bars.

Breaker

(english) Uncoiler rolls through which the strip passes; composed of a mandrel and leveling rolls which unwind the strip prior to processing through the Pickler. Breaker rolls assist in breaking up the Hot Mill surface scale.

Burning

(english) (1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. (2) In grinding getting the work hot enough to cause discoloration or to change the microstructure by tempering or hardening.

Blue Annealing

(english) Heating hot rolled ferrous sheet in an open furnace to a temperature within the transformation range and then cooling in air, in order to soften the metal. The formation of a bluish oxide on the surface is incidental.

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