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What is the manufacturing process of SUS304 Outer Tie Rod?

Dec 10, 2025

Hey there! As a supplier of SUS304 Outer Tie Rods, I'm super stoked to walk you through the manufacturing process of this vital automotive part.

Starting with the Basics: What's SUS304?

Before we dive into the manufacturing bit, let's talk about SUS304. It's a type of stainless steel that's widely used in the automotive industry. SUS304 has a high chromium content, which gives it excellent corrosion resistance. It also has good formability and weldability, making it ideal for making parts like outer tie rods.

SUS304 Outer Tie Rod Without Chrome PlatedSUS304 Outer Tie Rod With Chrome Plated

Step 1: Material Selection and Inspection

The very first step in making SUS304 outer tie rods is selecting the right material. We source high - quality SUS304 stainless steel bars. Once we get the bars, we don't just jump into production. We conduct a thorough inspection to make sure the material meets our strict quality standards. We check things like the chemical composition, surface finish, and dimensional accuracy. Anything that doesn't meet our criteria gets sent back. This is crucial because the quality of the raw material directly affects the quality of the final product.

Step 2: Cutting the Bars

After passing the inspection, the SUS304 bars are cut to the appropriate length. We use precision cutting machines to ensure that each piece is cut to the exact size we need. This step is important because the length of the tie rod affects its performance in the vehicle. If it's too long or too short, it can cause problems with the steering system.

Step 3: Forging

Once the bars are cut, it's time for forging. Forging is a process where we heat the metal to a high temperature and then shape it using pressure. This process makes the metal stronger and more durable. We use a forging press to shape the tie rod into a rough form. The heat and pressure in forging realign the metal's grain structure, which gives it better mechanical properties. During forging, we also pay close attention to the shape and dimensions, making sure they're as close as possible to the final design.

Step 4: Machining

After forging, the rough - shaped tie rods need to be machined to achieve the exact dimensions and surface finish. This is a multi - step process that includes turning, milling, and drilling. In the turning process, we use a lathe to rotate the tie rod and remove excess material to achieve the desired diameter. Milling is used to create flat surfaces and remove material from the sides. And drilling is done to create holes for bolts and other components. We use computer - numerical - control (CNC) machines for this step to ensure high precision and consistency.

Step 5: Heat Treatment

Heat treatment is another crucial step in the manufacturing process. It involves heating the tie rod to a specific temperature and then cooling it at a controlled rate. This process changes the mechanical properties of the metal, making it stronger and more resistant to wear and fatigue. There are different types of heat treatments we might use, like淬火 (oops, let me correct that in English) quenching and tempering. Quenching quickly cools the heated metal, which hardens it. But quenching can also make the metal brittle. So, we follow it up with tempering, which heats the metal to a lower temperature and then cools it slowly to reduce the brittleness while maintaining the hardness.

Step 6: Surface Treatment

When it comes to surface treatment, we have two options for our SUS304 outer tie rods. We offer SUS304 Outer Tie Rod with Chrome Plated and SUS304 Outer Tie Rod without Chrome Plated.

For the chrome - plated option, the tie rod is first cleaned and prepared. Then, it's immersed in a solution containing chromium ions. An electric current is applied to deposit a thin layer of chromium on the surface of the tie rod. Chrome plating not only gives the tie rod a shiny, attractive appearance but also provides additional corrosion resistance and wear protection.

If the customer opts for the non - chrome - plated version, we might use other surface treatments like coating or passivation to enhance the corrosion resistance of the SUS304. Passivation is a chemical process that removes free iron from the surface of the stainless steel, forming a protective oxide layer.

Step 7: Assembly

Once the individual tie rods are made and surface - treated, they need to be assembled with other components. This usually includes attaching ball joints and other linkage parts. During assembly, we make sure that all the parts fit together properly and are tightened to the correct torque. Any loose connections can lead to steering problems and safety issues down the line.

Step 8: Quality Control

Before packing and shipping the SUS304 outer tie rods, we conduct a final quality control check. We use a variety of inspection methods, such as visual inspection, dimensional measurement, and performance testing. Visual inspection helps us catch any surface defects like scratches or cracks. Dimensional measurement ensures that the tie rod meets all the required specifications. And performance testing, which might involve simulating real - world driving conditions, verifies that the tie rod functions correctly and can withstand the stresses of normal use.

Why Our SUS304 Outer Tie Rods Are Great

We put a lot of effort into every step of the manufacturing process because we want to provide the best quality SUS304 outer tie rods. Our products are made from high - quality materials, and we follow strict quality control procedures. Whether you're a car manufacturer looking for reliable steering components or an auto repair shop in need of replacement parts, our SUS304 outer tie rods are a great choice.

So, if you're interested in purchasing our SUS304 outer tie rods, don't hesitate to reach out. We're always ready to have a chat and discuss how we can meet your specific needs. We're here to make sure you get the best product at a fair price.

References

  1. ASM Handbook Committee. ASM Handbook Volume 14A: Metalworking: Bulk Forming. ASM International, 2013.
  2. Madayag, R.C. et al. Automotive Chassis and Suspension Systems. Pearson Education, 2018.
  3. Kalpakjian, S. and Schmid, S.R. Manufacturing Engineering and Technology. Pearson, 2014.
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Linda Jiang
Linda Jiang
I am a supply chain manager at无锡卡伯斯动力传动科技有限公司, where I oversee the procurement and logistics of raw materials and finished products. My goal is to ensure efficient production processes and timely delivery of our Agra brand components to global markets.