Questions You Should Know about Steel Supplier

09 Mar.,2024

 

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1) What is the raw material needed for steel production?

Steel is made when iron is combined with carbon and other elements like-
  • Water
  • Flux (Limestone and Dolomite)
  • Refractories
  • Silica or Sand
  • Water
  • Ferro alloys

Here are Steel Plant interview questions and answers for freshers as well as experienced candidates to get their dream job.Steel is made when iron is combined with carbon and other elements like-

Free PDF Download: Steel Industry Interview Questions and Answers

2) How molten iron or base material for steel is made?

To prepare molten iron you use limestone and coke, and you put into the top of a blast furnace. After that, you expose the base material to the air until its very hot, out of which the molten iron is prepared, and ultimately this iron is used to make steel.

3) What are the types of steel?

  • Stainless Steel
  • Carbide Steel
  • Carbon Steel
  • High-speed Steel
  • Cobalt Steel

4) Explain what is the difference between hot rolled steel and cold rolled steel?

Hot Rolled Steel vs Cold Rolled Steel
  • Hot rolling involves steel at a temperature (1700* F) above the steel’s recrystallization temperature
  • Cold rolled steel is manufactured at temperature below its recrystallization temperature
  • Hot Rolled Steel is cheaper to make
  • Cold Rolled Steel is not as cheaper as hot rolled steel
  • Hot rolled steel will shrink while cooling process and the shape and size are predictable, unlike cold rolled steel.
  • There is no worry about the steel shrinking or changing shape of steel.
  • Hot rolled finishing is not as smooth as Cold Rolled steel
  • Cold rolled steel has smoother finishing and has a square corner and more accurate in dimension
  • Hot Rolled Steel is used for welding purpose and construction trades such as making rail road tracks, I-beams, etc.
  • Cold Rolled Steel is used for the purpose where quality of steel matters like steel used for the suspension bridge

5) What is the amount of steel does BOS (Basic Oxygen Steelmaking) Vessel can take?

BOS is the central bulk production process for refining iron into steel. It can take up to 350 tonnes of molten iron at a time and convert it into steel in less than 30 minutes.

6) Explain what is Blast furnace?

Blast furnace is a technique used to

7) What is the use of Tundish in the steel plant?

In steel production plant, tundish is a reservoir that enables the steel to flow at a regulated rate through gas tight refractory tubes and into a series of water-cooled copper moulds.

8) What are the different shapes or forms does steel are prepared?

Steel is prepared into various sections like
  • Plates and Tubes
  • Strip and Profiles
  • Rails
  • Rods
  • Wire and Bar

9) What are the main challenges does steel industry is facing now?

The main challenges that steel industry is facing now is
  • Overcapacity
  • High raw material cost
  • Price volatility

10) What are alloying agents?

To change the chemical structure of steel and, to enhance its properties over carbon steel or to alter them to meet the requirements of a particular application alloying agents are used. For instance, if you have a chromium about 12% of the content, chromium significantly improves corrosion resistance. Such corrosion resistance steel is referred as stainless steel.

11) What are the impurities added in the steel?

Impurities percentage is very minimal, and it is added according to the requirements
  • Silicon
  • Sulphur
  • Carbon
  • Phosphorous
  • Manganese, etc.

12) What are PCI stands for?

PCI stands for Pulverized Coal Injection Method.

13) Mention what is the melting point of steel?

Melting point of steel is approximately, 1370 degree C, although its melting point differs according to the type of alloy mixed in it, which gives the strength, corrosion free and other properties to the steel.

14) What does “tool steel” contains?

Tool steels contain molybdenum, tungsten, cobalt and vanadium in different quantities to increase the heat resistance and the durability, making them ideal for cutting and drilling equipment.

15) Explain what is the thermal lance?

Thermal lance is a tool that heats and melts iron in the presence of pressurized oxygen to produce high temperatures required for cutting.

16) What is the main hazardous thing in Steel Plant?

The hazardous thing that one have to take care while working in Steel Plant is
  • Heat
  • Dust
  • Noise
  • Liquid metal and Slag
  • Gas Poisoning
  • Moving equipment’s
  • Moving locomotives
  • Fire and Explosion

17) What are the types of Stainless Steel?

The main types of stainless steel are
  • Ferritic
  • Austenitic
  • Martensitic

18) What forms of corrosion you will see in stainless steel?

The type of corrosion you will see in stainless steel are
  • Pitting Corrosion
  • Crevice Corrosion
  • General Corrosion
  • Stress Corrosion
  • Intergranular Corrosion
  • Galvanic Corrosion

19) What are the factors that matter for choosing stainless steel?

The factors that mater before choosing stainless steel are
  • Temperature of the operation
  • How corrosive is the surrounding
  • Type of welding carried out
  • Cost and Availability
  • What type of strength is required
  • Costing

20) What are different ways of doing QC(Quality Control) for steel?

There are various methods for doing QC for steel
  • Using Microscope: A cross section of highly polished sample is observed under 100-500 magnification diameters. It will reveal the presence of alloy metals in it and help to determine the strength and behaviour of steel under set condition
  • Rockwell and Brinell hardness tests: This test is done to check the hardness of steel by impressing into the test specimen.
  • Charpy and Izod test: In this test, a metal pendulum of specific weight is allowed to strike the testing sample and after that the energy absorbed by the specimen is measured. This test is done to measure the material behaviour on exposing high rate of loading, bending, tension or torsion
  • Salt Bath Immersion techniques: This technique is used to check chemical, electrochemical or metallurgical interaction between the environment and the material
  • Magnetic particle inspection: To detect crack, tears, seams and inclusion
  • Ultrasonic sound Waves: It is used to detect porosity, internal cracks, shrinkage voids and large non-metallic inclusions

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To prepare molten iron you use limestone and coke, and you put into the top of a blast furnace. After that, you expose the base material to the air until its very hot, out of which the molten iron is prepared, and ultimately this iron is used to make steel.Hot Rolled Steel vs Cold Rolled SteelBOS is the central bulk production process for refining iron into steel. It can take up to 350 tonnes of molten iron at a time and convert it into steel in less than 30 minutes.Blast furnace is a technique used to raise the temperature up to 2200 degree C in the furnace. This high temperature is required for the chemical reduction, as well as for melting of the sinter and iron ore.In steel production plant, tundish is a reservoir that enables the steel to flow at a regulated rate through gas tight refractory tubes and into a series of water-cooled copper moulds.Steel is prepared into various sections likeThe main challenges that steel industry is facing now isTo change the chemical structure of steel and, to enhance its properties over carbon steel or to alter them to meet the requirements of a particular application alloying agents are used. For instance, if you have a chromium about 12% of the content, chromium significantly improves corrosion resistance. Such corrosion resistance steel is referred as stainless steel.Impurities percentage is very minimal, and it is added according to the requirementsPCI stands for Pulverized Coal Injection Method.Melting point of steel is approximately, 1370 degree C, although its melting point differs according to the type of alloy mixed in it, which gives the strength, corrosion free and other properties to the steel.Tool steels contain molybdenum, tungsten, cobalt and vanadium in different quantities to increase the heat resistance and the durability, making them ideal for cutting and drilling equipment.Thermal lance is a tool that heats and melts iron in the presence of pressurized oxygen to produce high temperatures required for cutting.The hazardous thing that one have to take care while working in Steel Plant isThe main types of stainless steel areThe type of corrosion you will see in stainless steel areThe factors that mater before choosing stainless steel areThere are various methods for doing QC for steel

What are the questions to ask your custom structural steel fabricator?

  1. How do you hire your staff and fabricators?

  2. What is your level of experience?

  3. What do you specialize in?

  4. What is your capacity?

  5. What are your processes?

  6. What equipment do you utilize? 

  7. Do you have in-house finishing?

There is no way to build a project—big or small—without the use of custom structural steel. However, structural steel fabrication can be an especially complicated procedure. The effectiveness and quality of the structural steel parts are limited without the right fabricator. It is important to know about the questions to ask a custom structural steel fabricator. 

A structural steel fabricator can cut, bend, and assemble versatile parts of steel, transforming them into components that match your project needs. As the success of a project will depend on the durability and quality of materials and processes, you will want to work with the right structural steel fabricator. This is especially important if you have a complicated project with multiple stakeholders and strict deadlines.

With the wrong structural steel fabricator, small errors can snowball into more costly, wide-scale problems. Here are seven questions to ask your custom structural steel fabricator. 

How Do You Hire Your Staff And Fabricators? 

The right custom structural steel fabricator should be able to indicate guidelines on how the company locates its fabricators. Ask about the hiring process the company uses. If the policies are clear on hiring only certified fabricators, it is a good indicator that their work comes out with quality. 

At Astron Metal Works, we highly uphold the quality of finished products and services rendered. Thus, you can be assured that we hire certified and dedicated teams of engineers, project supervisors, safety officers, and office personnel to cater to your construction needs.

What Is Your Level Of Experience?

Custom structural steel fabricators who have extensive experience in the metal fabrication industry are aware of the best practices and materials for producing quality structural steel projects. 

The number of years in business is a good measure of experience. The older the company, chances are, the more established the team is. 

When a structural steel fabricator has a high-level of experience, it is likely that they have successfully worked on projects in the past that are similar to yours as well. Ask about the past clients they have worked with.

At Astron Metal Works, we boast of 45 years of experience. Through this, we identified the best practices to produce high-quality structural steel products. This also enables our team to successfully serve a wide array of multinational clients from diverse industries such as dairy, food and beverage manufacturing companies, petroleum, construction, and consumer good companies.

Some of our clients include Ayala Land, Amaia, SMDC, Okada, Solaire, Lazada, Pilipinas Shell, Total, Unioil, Petron, Nestle Philippines, San Miguel Corporation, Magnolia, Monde Nissin, Alaska, Silver Swan, and many more.  

What Do You Specialize In?

Does the custom structural steel fabricator you are considering specialize in your project type? Custom structural steel projects are multi-faceted and require meticulous attention to detail. It’s important to find a fabricator that can handle the steel grade, type, and procedure accuracy needed for your project. 

If you ask about what the fabricators specialize in, your project will be more efficient as the fabricator fully understands the project requirements. It is also possible that the fabricator will present ideas that could improve your project. 

What Is Your Capacity?

Ask about their capacity as well. One common problem that custom structural steel fabricators face is the inability to meet the high volume demand of clients. If you have a large project, you will need a large workforce as well.

What Are Your Processes?

It is important to ask this question as different fabricators make use of different processes. Some custom structural steel fabricators prefer manual processing over machine fabrication, which can impact the quality and efficiency of your project. 

Inquire about the safety processes and standards the custom steel fabricator adheres to as well. This makes it less likely to create fabrication mistakes that lead to compromising structural integrity. 

At Astron Metal Works, we understand that you expect only the best as a client. To receive this, we make use of highly efficient processes. We offer shearing, bending, sheet metal rolling, dishing, punching, assembly, and CNC Cutting Services in the Philippines.

Our work begins by aiding our client’s project design plan. Since each product is customized, clients approve our proposed design before fabrication begins. For high-volume items, we provide mock-ups before production to test the design quality and eliminate errors. Then, our highly-equipped teams use state-of-the-art machines for end products.   

What Equipment Do You Utilize? 

It is wise to choose fabricators based on the equipment they utilize. Asking this question will help you identify whether the custom structural steel parts could be delivered with quality and on time or not.

For instance, custom structural steel fabricators that invest in advanced equipment are more likely to produce and deliver products on time, increasing productivity and enhancing quality all at a lower cost for a client. Fabricators that continue to function with outdated equipment to save money can put themselves at a great disadvantage.

Having steel materials of top-notch quality will be a waste if the equipment used cannot process them effectively. 

Do You Have In-House Finishing?

It’s advantageous to seek out custom structural steel fabricators who deliver the finished product to you, exactly the way you want. In-house finishing ensures superior quality products compared to outsourcing. This is because the fabricators who designed and assembled the project will know which type of finishing will be best for your project. 

Key Takeaway

We have rounded up seven questions to ask a custom structural steel fabricator. Never settle for a fabricator that does not use high-quality equipment and processes, and always ensure that the personnel is highly experienced. 

It is not an easy task, but if you could identify a reliable structural steel fabricator, you can rest assured that your projects are built with efficiency and quality in mind.

If you are ready to work with a top-notch custom structural steel metal fabricator, contact Astron Metal. We are ready to answer all your concerns and guarantee your structures are built excellently. Click here to get in touch with us today! 

Questions You Should Know about Steel Supplier

Ensuring Fabrication Quality: 7 Questions to Ask Your Custom Structural Steel Fabricator

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