Hot- rolled steel coil

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One, introduction

Hot rolled coil is used for continuous casting slab or slab as raw material, after reheating furnace heating, scales entered the roughing mill in the high pressure water, roughing cut is expected by the head, tail, and then enter the finishing mill, the implementation of the computer controlled rolling, finally after rolling through the laminar cooling (computer controlled cooling rate) and coiling machine coiling, become straight hair volume. Hair straightener roll head, tail often forms a tongue shape and fishtail, thickness, width of poor accuracy, edge has wavy, folding, tower and other defects. The volume weight heavier, steel coil diameter is 760mm. (general pipe industry like use. )

2 two, characteristics

Because there is no after annealing treatment, the hardness is very high (HRB greater than 90), mechanical processing performance is poor, only a simplebending process has less than 90 degree directional (direction perpendicular to the rolled).

Three, use 3

Hot rolled products with high strength and good toughness, easy processing and good forming can be excellent performance of welding, which is widely used in ships, cars, bridges, buildings, machinery, boiler, pressure vesselmanufacturing industry.

The scope of application:

(1) after annealing processing into the common cold;

(2) processing galvanized galvanized unit before the annealing treatment;

(3) the basic do not need to process the panel.

4 four, classification

Carbon steel plate, carbon plate, low alloy plate, ship plate, bridge plate, boiler plate, container plate etc.. Rolling hard volumes: under normal temperature,the hot pickling volumes of continuous rolling.

Hot rolled steel strip products include steel (roll) and the shear of steel plate.And steel (coils) can be divided into straight and finishes volume (the volume,smooth rolling and slitting roll).



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Q:Aluminum alloy rolling doors and color steel shutter door that good
Aluminum Alloy shutter door instead of the traditional rolling door noise inherent shortcoming, the process of opening and closing of windleavesthe sound {(Note: the design of Aluminum Alloy shutter doors from the beginning not to seal, but the curtain sheet with a silencing strip sealinghas been improved, but still did not have the seal. ) the existing Aluminum Alloy shutter door curtain film have two Aluminum Alloy hollow extrusions and Aluminum Alloy filled polyurethane foam materials, extrusiontypecurtain, hardness, making width, protective performance are better than the filling profiles, in accordance with the free choice profile door curtain sheet to the different needs of users.
Q:Measures to prevent cold rolling of packaged cold rolled steel coils? Who can give some professional opinions oh?
In order to prevent rusting in the process of storage or transportation of steel roll, steel mills generally take the following packing: inner gas antirust paper wrapped with tape wrapped in plastic film sealing, intermediate, involute cardboard seal lining, cardboard corner, with iron and steel outer package corner protector, strapping fixed. If the inner package seal, so the steel coil is sank into the water, will not rust out.
Q:In the warehouse management system of steel coil
Warehouse is an important component of enterprise material supply system. It is also the tache of enterprise material circulation and storage, and it also undertakes many functions of material management. Its main tasks are to keep the stock well, to be accurate, to be of good quality, to ensure safety, to prompt the people, to produce, to be considerate, to reduce costs, and to speed up capital turnover.
Q:Steel coil from vertical to horizontal, what sling needs?
Consider using the function with hydraulic prop hanging clamp from the coil center will hold tight after hanging up, then put in a L type hydraulic turnover device platform or unilateral double column loading platform, then L platform can realize 90 degrees down, vertical horizontal variable.
Q:What is the material of steel coil 08F and what brand can be used instead?
The high quality carbon structural steel, carbon steel, steel commonly referred to as. Steel for the manufacture of parts for various machines.1.08 and 08F steel is used for rolling thin plates, deep drawing products, oil drums and high-grade enamel products. It can also be used for the manufacture of pipes, gaskets and core parts with low strength requirements, carburizing and cyaniding parts, welding electrodes and so on.2.10 and 10F steel, use cold pressing deep drawing products below 4mm, such as deep drawing vessel and shell. It can also make boiler tubes, oil drum covers and steel strips, steel wires, welding pieces and mechanical parts.3.15 and 15F steel are used to make carburizing parts, fastening parts, die forging parts and low load parts without heat treatment, such as bolts, screws, flanges and storage tanks for chemical machinery, steam boilers, etc..
Q:Why cold rolled stainless steel sheet is lower than cold rolled stainless steel coil?
304 stainless steel coil 2.0*1219*C spot price 18 thousand and 100 / ton, general tolerance at about 1.8mm.Coil price * actual thickness / reference thickness = flat price1.81*1.8/2=16.29
Q:What brand steel tapes are of good quality?
Personal feeling is also good for the Great Wall Seiko tape, upstairs several estimates are the production of steel tape manufacturers, of course, that their goods well. Our unit now buy all the Great Wall Seiko goods, said the tape is good, not because it is so durable
Q:On how to reinforce steel coils in a container
They can be strapped to the floor with wire ropes and locks
Q:Several reading methods of steel tape measure
Direct reading method when measuring the steel tape zero scale alignment measurement starting point, proper tension (stretching force with steel tape tension or tension on the calibration ruler identification shall prevail, with the spring balance measure), direct reading measurement end point corresponding to the scale scale.
Q:What's the length of a coil of cold rolled steel? Is there a standard?
Generally there is no standard length, to customer demand to roll weight, because customers with steel coil production capacity is different, lifting ability of a volume can do longer, on the contrary, do small points.

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