Deep VIN Marking Machine for Permanent Identification
Introduction
Vehicle identification number (VIN) marking is a critical process in automotive manufacturing. The VIN must remain legible and permanent throughout the vehicle's lifetime, even after painting and years of exposure to harsh conditions. As automakers increasingly use high-strength steel and hot-formed steel for body-in-white structures to improve crash safety and reduce weight, traditional marking methods face challenges in achieving sufficient depth and clarity.
A deep VIN marking machine addresses these challenges by creating permanent, deep marks on advanced materials. This article explains what deep VIN marking is, how the technology works, its key features, applications, benefits, and why it is relevant for modern automotive production lines.
Product Overview
The KINMARK Deep Laser Marking Machine is designed for permanent VIN deep marking on high-strength steel plates with yield strength exceeding 700 MPa and hot-formed steel plates with strength up to 1500 MPa. It achieves a marking depth of more than 0.2 mm on body-in-white, ensuring clear rubbing results after painting.

This system is suitable for automotive mass production environments where reliable identification and traceability are required. It supports integration with industrial robots or assisted manipulators, enabling automated marking processes on production lines.
Working Principle
The deep VIN marking machine uses a 200W laser to create deep, permanent marks on metal surfaces. The laser beam is focused onto the material, causing localized melting and vaporization to form characters with a depth of at least 0.2 mm. This depth ensures the VIN remains readable even after the painting process, where traditional shallow marks might be filled or obscured.

The system can be equipped with an optional 3D vision guidance system for precise positioning, allowing accurate marking on complex geometries. Additionally, an optional 3D laser scanning measurement and OCR recognition system enables online inspection of marking quality and ensures 100% traceability.
Key Features
Deep VIN Marking: Achieves marking depth ≥0.2 mm on high-strength steel and hot-formed steel, ensuring permanence.
Easy Rubbing: Special marking process ensures clear rubbing results after painting.
Easy Integration: Various mounting interfaces allow quick integration with industrial robots or assisted manipulators.
Vision Guidance: Optional 3D vision guidance system for precise positioning and accurate marking.
Automatic Traceability: Optional 3D laser scanning measurement and OCR recognition for online quality inspection and 100% traceability.
Reliable Performance: Designed for continuous operation in automotive mass production environments.
Technical Specifications
| Power Supply | AC220V ±10%, 50Hz ±2% |
|---|---|
| Power Consumption | <1000W |
| Laser Power | 200W |
| Marking Area | 112mm × 112mm |
| Marking Depth | ≥0.2mm |
| Operating Temperature | 0\~40℃ |
| Operating Humidity | ≤90% RH (Non-condensing) |
Applications
The deep VIN marking machine is primarily used in automotive manufacturing for marking VINs on body-in-white. It is suitable for vehicles that use high-strength steel and hot-formed steel in their structures, including passenger cars, SUVs, and commercial vehicles. The system can be integrated into automated production lines for mass production.
Beyond automotive, similar deep marking applications may exist in other industries requiring permanent identification on metal components, such as construction machinery, rail transit, and new energy vehicles. However, the primary focus remains automotive VIN marking.
Benefits
Permanent Identification: Deep marks ensure the VIN remains legible throughout the vehicle's life, even after painting and exposure to harsh conditions.
Traceability: Optional OCR and 3D scanning enable 100% online inspection, supporting quality management and regulatory compliance.
Production Integration: Easy integration with robots and manipulators allows seamless adoption into existing automated lines.
Process Consistency: The system provides reliable, repeatable marking results on challenging materials.
Efficiency: Automated marking and inspection reduce manual intervention and improve production efficiency.
Why Choose KINMARK
KINMARK has been involved in automotive intelligent automation equipment since 1996, with a focus on marking and traceability systems. The company has developed deep laser marking technology specifically for high-strength steel and hot-formed steel, addressing the needs of modern body-in-white production. KINMARK collaborates with many automotive manufacturers and suppliers, providing solutions that integrate marking, vision, and traceability. Their deep VIN marking machine reflects this expertise, offering a reliable solution for permanent identification in demanding production environments.
Frequently Asked Questions
What is a deep VIN marking machine?
A deep VIN marking machine is a laser marking system designed to create permanent vehicle identification numbers with a depth of at least 0.2 mm on high-strength steel and hot-formed steel. This depth ensures the VIN remains readable after painting and throughout the vehicle's life.
Can it mark on high-strength steel?
Yes, the KINMARK deep laser marking machine is specifically designed for high-strength steel plates with yield strength exceeding 700 MPa and hot-formed steel plates with strength up to 1500 MPa.
Does it support automated production lines?
Yes, the system is designed with various mounting interfaces for quick integration with industrial robots or assisted manipulators. Optional 3D vision guidance and automatic traceability systems further enhance automation.
What is the marking depth?
The marking depth on body-in-white can reach more than 0.2 mm, ensuring clear rubbing results after painting.
Is traceability supported?
Yes, optional 3D laser scanning measurement and OCR recognition systems provide online inspection of marking quality and ensure 100% traceability.
Conclusion
Deep VIN marking is essential for permanent identification and traceability in automotive manufacturing, especially with the increasing use of high-strength and hot-formed steels. The KINMARK deep laser marking machine offers a reliable solution, achieving marking depths of ≥0.2 mm on these materials. With features like easy integration, optional vision guidance, and automatic traceability, it supports efficient and compliant production. For manufacturers seeking a robust VIN marking system, this technology provides a practical path to permanent identification.
If you're interested in any of the equipment mentioned in this article, feel free to contact our sales engineers for detailed product information and customized technical solutions.
