In today's world, the quality of industrial products not only represents the reputation of the manufacturer's brand but also determines its position in the domestic and global market. One of the key parts in the steel industry is the quality control system in the production process that directly affects the durability, strength and performance of the products.

In the meantime, Yazd Danesh Rolling Steel, as one of the leading factories in the production of construction and industrial climbing sheets, implements quality control standards with exemplary precision. The quality control system in this plant is based on engineering principles, world -class technologies and international standards to ensure that any steel sheet that comes out of the production lines has the highest quality.

The role of quality control in the steel production process

Quality control in the steel industry is not just a final step, but a continuous process that starts from the selection of raw materials and continues to package the final product. Each process of manufacturing sheet production in Yazd Rolling Steel is carried out under the supervision of specialist engineers and quality inspectors to identify and fix the errors in the early stages.

The main purpose of this process is three things:

Ensure Products to International Standards

Reduce waste and increase production lines

Increase customer satisfaction and brand durability in competitive steel market

Quality Control Steps in Yazd Knowledge Rolling

In Yazd Knowledge Rolling Steel, quality control is systematically implemented in several steps, each of which has a specific task. These steps include checking raw materials, melting and rolling process control, mechanical and chemical evaluations, and ultimately final product inspection.

1. The quality control of the raw materials

The final quality of climbing depends on the purity and precise chemical composition of the raw materials. For this reason, the first and most vital stages of quality control in Yazd's Knowledge Rolling Steel is to review the raw materials.

At this point, the input steel bars and billes are examined in terms of:

chemical composition (percentage of carbon, manganese, silicon and alloy elements)

appearance and existence of cracks or cavities

Weight and Dimensions

samples of each cargo of raw materials are transferred to the laboratory, and precise chemical analysis is performed using a spectrometer. If the elements are out of standard, the raw materials are not allowed to enter the production line.

2. Supervision at the melting stage and preparing the bullion

In Yazd's Knowledge Rolling Steel Factory, the process of melting and recovering bars is another sensitive point of quality control. In this section, the furnace temperature, melting time, and oxygen levels in the furnace are precisely measured to create a clean and homogeneous steel structure.

Quality control experts constantly test the molten sample and measure the amount of impurities while measuring the analysis. Any deviation in the percentage of elements is immediately corrected by the smart production line system.

3. Quality control in hot rolling

At this stage, steel bars enter the rolling shelves after reaching the optimal temperature (about 2 to 5 ° C). Rolling operations lead to a decrease in thickness and increase the length of the sheets.

Quality control in hot rolling rolling Yazd Rolling Rolling includes:

precise measurement of thickness and width of the sheet per pass

control of the sheet outlet temperature from rolls

check the sheet surface to ensure the absence of cracks or oxide shell

monitor the speed of rolling to maintain the uniformity of the structure

Automation Systems in Yazd Rolling Steel are designed to detect and modify any deflection in the thickness or surface of the sheet at the moment.

4. Cooling and controlling metallurgical structure

After hot rolling, the sheets must be cooled to minimize internal stresses in the steel structure. The cooling system in Yazd's Knowledge Rolling Rolling System operates uniformly and continuously to prevent the twist or twist of the sheets.

At this point, samples of sheets are sent to the metallurgical laboratory to be examined in terms of microstructure, grain, and microorganicism. The use of microscopic analysis devices and metallography testing is one of the main tools of quality control at this stage.

5. Mechanical and chemical experiments

In Yazd Knowledge Rolling Steel, quality control is not limited to the appearance or thickness of the sheet. The mechanical laboratory section is responsible for examining the physical and chemical properties of the products.

Mechanical experiments include:

Tension Test to measure the final sheet strength

bending test to check flexibility

impact test (sharp) to evaluate resistance to sudden failure

Hardness test to control level hardness level

On the other hand, chemical tests are performed to investigate the composition of the elements and the amount of sulfur and phosphorus. All results are recorded in the central control system and compared to the base standards.

6. SEMBERSHIP AND ADD

After the technical tests, steel sheets enter the appearance and dimensional inspection.

At this stage, Yazd Knowledge -Rolling Steel Quality Control Technicians Examine the Thickness, Thickness, Length, Width and Sleep Using Sheets.

Also, the surface of the sheets is evaluated in terms of the following:

Line and surface scratch

scaling

to be wavy or tolerance

Oxide stains

Any sheet that has an apparent defect or unauthorized number of dimensions is reinforced or melted.

7. Quality control in packaging and sending

In Yazd Knowledge Rolling Steel, even the packaging stage is considered part of the quality control process. Confirmed sheets after cutting in standard dimensions are complicated and labeled by automatic devices.

is listed on each package of technical specifications including melting number, thickness, type of steel and production date so that the product can be traced at any time. In addition, the quality control team performs the last eye review before leaving the product from the factory to ensure physical health.

Technologies used in Yazd Knowledge Rolling Quality Quality Control

One of the secrets of Yazd's rolling steel success in ensuring the quality of its products is the use of modern technologies in monitoring and measurement systems. Among the technologies used in this factory are the following:

Nouri spectrometry system (OES): To analyze precision chemical compounds

XRF device: To identify alloy elements in very low percentages

Digital Hard Measurement: To control the hardener of hardness at the sheet surface

Laser Thickness Measurement Machine: with a precision of less than 1.5 mm

Smart Industrial Cameras: To identify surface defects automatically

These technologies have made the level of accuracy in the quality control of Yazd Knowledge Rolling Steel.

The importance of documenting in quality control

Each step of producing climbing in Yazd Knowledge Rolling Steel has special forms and checklists recorded by Quality Association (QA). In addition to continuous quality control, these documentation is kept as a technical background of each product to be cited in subsequent references or export processes.

The existence of this electronic data registration system has made the process of production and trust in domestic and international customers

Adaptation to national and global standards

All steps to control Yazd Knowledge Rolling Steel Quality Controls in accordance with international standards such as ISO 9001, ISO 14001 and OHSAS 18001. It is also fully compatible with the following technical standards:

ASTM A36 for building sheets

ASTM A516 for industrial sheets under pressure

jis g3101 for public use

ISIRI 3694 as National Iranian Standard

These cases show that Yazd's rolling steel is significantly technical not only at the national level, but also among competitors at the regional level.

Impact of quality control on market trust

One of the tangible results of the precise implementation of quality control steps in Yazd Knowledge Rolling is to increase trust among different customers and industries. The sheets that come out of the lines of this factory are always in accordance with the declared specifications.

This confidence has led the country's largest industrial projects, from power plants to high -rise towers, to supply their sheets to Yazd Rolling Steel.

Conclusion

Quality control in the production of steel products is a complex, precise and multi -step process. At Yazd Knowledge Rolling Steel Factory, this process is systematically and scientifically implemented to ensure the highest quality for customers.

from the selection of raw materials to the final delivery, each step is done under the supervision of quality control professionals using advanced equipment. It is this scientific and committed approach that has made Yazd's steel steel name symbolizes trust and quality in the Iranian steel industry.

With careful observance of these steps, Yazd Knowledge Rolling Rolling Sheets have been able to shine in national and export projects and gain a sustainable place in the country's steel market.