Hot Rolled Steel Plate and Strip, is a common metallic material produced through the hot rolling process

Hot Rolled Sheet, also known as Hot Rolled Steel Plate and Strip, is a common metallic material produced through the hot rolling process. This process involves rolling steel slabs at high temperatures into plates and strips of desired thickness and width. Hot Rolled Sheets exhibit excellent physical and mechanical properties, making them widely used in various industries.

 

INTRODUCTION

 

Hot Rolled Sheet, also known as Hot Rolled Steel Plate and Strip, is a common metallic material produced through the hot rolling process. This process involves rolling steel slabs at high temperatures into plates and strips of desired thickness and width. Hot Rolled Sheets exhibit excellent physical and mechanical properties, making them widely used in various industries.

 

 

APPLICATION AND SPECIFICATION

 

Hot Rolled Sheets are applied in numerous industries, including but not limited to: 

Automotive Industry: Used in manufacturing automobile bodies, chassis, engine covers, and other components due to their good processability and strength. 

Construction Industry: Utilized in making steel structures, frames, beams, and columns, as they possess high strength and toughness to withstand significant loads and pressures. 

Shipbuilding: Employed in constructing ship hulls, bottoms, and other parts, owing to their corrosion resistance and strength suitable for marine environments.

Machinery Manufacturing: Found in various machines and equipment, as their excellent strength and toughness cater to heavy loads and pressures. 

Thickness: The range is usually between 0.35mm and 200mm (some standards may extend to 250mm), with specific values such as 0.50mm, 0.65mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm, etc. The thickness interval can be 0.5mm or finer according to requirements.

Width: Greater than or equal to 600mm, common widths include 600mm, 1000mm, 1250mm, 1500mm, 1800mm, 2000mm, 2200mm, 2500mm, etc., and can also be any size of 50mm or 10mm multiples.

Length: The length can be customized according to requirements, usually ranging from 1.2m to 12m, but there is a minimum length requirement for steel plates of a certain thickness, such as the minimum length of steel plates with a thickness greater than 4mm shall not be less than 2m.

 

 

ADVANTAGES

 

High Production Efficiency: The hot rolling process allows for rapid production, resulting in cost savings.

Cost-Effective: Compared to cold-rolled sheets, hot-rolled sheets are generally more cost-effective.

Good Mechanical Properties: The hot rolling process improves the mechanical properties of steel, such as strength and toughness.

Easy Processing: They are easy to cut, weld, and form, making them suitable for various manufacturing processes.

 

TREND AND PROSPECT

 

The demand for Hot Rolled Sheets is expected to grow steadily due to the expansion of the global economy and the increasing need for steel in various industries. With advancements in technology, the production efficiency and quality of hot-rolled sheets continue to improve. Moreover, the trend towards lightweight and high-strength materials in automotive, aerospace, and other industries is driving the demand for thinner and stronger hot-rolled sheets.

 

INSPECTION STANDARD

 

The quality and performance of Hot Rolled Sheets are evaluated according to various standards, including international and national standards such as ASTM, EN, and GB/T. The following are some key testing parameters:

Chemical Composition Analysis: Determines the content of elements like carbon, silicon, manganese, phosphorus, and sulfur to ensure compliance with standards.

Mechanical Property Testing: Includes tensile tests, hardness tests, and impact tests to assess the strength, ductility, and toughness of the material.

Dimensional Inspection: Verifies the thickness, width, length, and flatness of the sheets and strips to ensure they meet specified dimensions.

Surface Quality Inspection: Checks for surface defects such as scratches, cracks, and inclusions to ensure a smooth and defect-free surface.

Non-Destructive Testing: Uses techniques like ultrasonic testing and magnetic particle inspection to detect internal defects without damaging the material.