Contact Us

Ningbo Zhenhai HuaLong Fasteners Co.,Ltd

Tel: 86- 574-86534199

Fax: 86-574-86533458

Mob: +86 13566521999


Add: ChangHong Village, Zhenhaizone, Ningbo City, China

How To Detect Bolts

- Aug 09, 2017 -

olt detection is divided into two types: artificial and machine. Manual is the most primitive and most commonly used consistent detection method. In order to minimize the outflow of undesirable products, general production enterprise personnel through the visual manner of the packaging or delivery of products to carry out inspection to exclude undesirable products (including tooth injury, mixed materials, rust, etc.).

Another way for machine automatic detection, mainly magnetic particle flaw detection.

Magnetic particle flaw detection is the use of the bolt defects in the magnetic leakage and magnetic particle interaction, for the bolts may exist defects (such as cracks, slag, mixing, etc.) permeability and steel permeability differences, after magnetization of these materials discontinuity of the magnetic field will occur in the transformation, forming part of the magnetic flux leakage of the workpiece surface produced a leakage magnetic field, so as to attract magnetic powder formation defects of the magnetic powder accumulation-magnetic trace, in the appropriate light conditions, showing the location and shape of defects, the accumulation of these particles to observe and explain, has achieved the purpose of excluding undesirable products.

Related News

Related Products

  • ASTM A563 Heavy Hex Nuts
  • A325 Round Head Tc Bolts
  • A193 Studs And Threaded Rods
  • A325M Bolts
  • ASTM A394 High Quality Special Hex Bolt Black
  • A490m Stainless Steel High Strength Heavy Hex Bolts Yellow Zinc Dacromet