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Manufacturing
Process Introduction

Manufacturing
Process

YM has equipped all its production lines with
advanced manufacturing facilities and equipment while implementing rigorous
quality control measures to provide high-quality fasteners.

  • Cold
    Forging
  • Thread
    Rolling
  • Heat
    Treatment
  • Surface
    Treatment
  • Automatic
    Vision
    Inspection
  • Automatic
    Warehouse
    System
  • Cold forging

    Refers to a processing method in which a metallic material is
    injected into a mold and subjected to plastic deformation under
    high pressure. In such a process, the material is plastically deformed
    in multiple stages while going through a series of molds with the
    different shapes. The desired shape is then achieved during the
    last stage.
  • Thread Rolling

    Refers to a processing method in which a material is rolled
    through a bolt-threaded mold to produce a product with a
    specific surface pattern.
  • heat treatment

    Refers to a process in which a metallic material is heated and
    cooled to specific temperatures to deform its microstructure and
    thus achieve the required properties.
    • Quenching-Tempering
    • Carburization
    • Induction Hardening
  • Surface Treatment

    Refers to a process in which the surface of a material is coated
    with various metallic films through physical or chemical methods
    to improve the corrosion resistance and fastening performance.
    • Zinc Plating
    • Zinc-Nickel Alloy Plating
    • Tin-Zinc Alloy Plating
    • Phosphate Coating
    • Zinc-Rich Coating (Geomet)
  • Automatic
    Vision Inspection

    Refers to a process in which complete products are inspected
    for any defects using multifunctional screening equipment
    (vision inspection, laser inspection, 360-degree inspection, and
    non-destructive heat-treatment inspection).
  • Automatic
    Warehouse System

    Refers to a process that ensures inventory control of completed
    products and maintains first-in-first-out(FIFO) management
    based on lot number tracking, thereby making sure that all customer
    orders are delivered in a timely manner while minimizing product
    shelf time.

Smart factory

With our automated advanced technologies (Smart Factory),​
YM provides high-quality products in a more reliable manner.

YM (Thailand) Co., Ltd.

Our Thailand corporation has been fully committed in manufacturing automotive and industrial bolts
and screws using Youngsin's forging technology combined with heat treatment and surface treatment solutions
based on our 55 years of know-how and expertise in fastener manufacturing.