2-Stroke Marine Diesel Engine Piston Crown Reconditioning

Restoring Performance, Reliability & Service Life Beyond Conventional Reconditioning Standards

Reconditioning is usually the most cost-effective solution for dealing with piston crown damage. However, the reconditioning process can differ significantly from vendor to vendor, drastically affecting the quality of the end product.

Certified KIMI technician performing NDT inspection on reconditioned piston crown grooves.

KIMI offers an end-to-end automated and seamless rebuilding procedure for piston crowns involving 3-D scanning evaluation, multiple AI-powered welding robots, and the latest technology CNC machines.

Why KIMI

This way, you can be absolutely confident that the piston you receive meets the manufacturer’s standards and guidelines, guaranteeing the highest quality of reconditioning. Our AI-powered welding achieves premium quality at the most competitive price in the market.

Specifically:

  1. Full rebuilding

The piston crown is restored to its original dimensions by complete buildup, not just machining.

i. Piston ring grooves

As a standard procedure, piston ring grooves are fully rebuilt (not just partially) and then machined to the nominal dimensions and the correct position on the piston crown diameter, according to the manufacturer’s drawings.

ii. Piston combustion surface

If the piston shows wear beyond acceptable limits, KIMI fully rebuilds the combustion area instead of just machining it.

2. Chrome plating

Our newly developed in-house chrome plating department is among the most advanced in Europe, offering one of the latest technologies that not only achieves 0.5mm net chrome layer precision on each groove side (in contrast to the industry practice of 0.30mm thickness) but also reduces reconditioning downtime by 50% for our clients.

3. Quality control

All production phases are carried out under the control of KIMI’s in-house quality control laboratory (accredited by ESYD) by PCN Level II-certified engineers. Tests, analyses and measurements conform to the ISO 17025 and ISO 9001 requirements.

Benefits

  • Cost-effective rebuilding services beyond compare
  • Quality and performance are equal to new, guaranteed by our in-house accredited quality laboratory
  • Reduced downtime with 2 4/7/365 AI robotic operation
  • Enhanced traceability with the KIMI logo and order number stamp

Most Common Marine Diesel Engine Models

SULZER 6RTA96CMAN B&W 7S50MC-CMAN B&W 9S90ME-C
MAN B&W 6S35MCMAN B&W 6S60MCMitsubishi 6UEC60LSII
MAN B&W 6S42MCMAN B&W 6S70MC-CSulzer 6RTA62U
MAN B&W 7S46MC-CMAN B&W 6S80MC-CWinGD RT-flex58T
MAN B&W 5S50MCMAN B&W 7S50ME-CWinGD X72
MAN B&W 6S50MC-CMAN B&W 6S80ME-CWinGD X62

Focusing on Prolonging Your Machinery Life Cycle

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