Quality Requirements For Commonly Used Fishplates

The function of the railway rail joint splint is to clamp the rail so that the rail end cannot move horizontally or independently. Each rail joint has two left and right splints, which clamp the rails at both ends through the joint bolts, so it is required to have sufficient strength and impact resistance. The following is the specific size, material quality requirements and application range of the most commonly used fishplate models 43, 50, 60, 75kg/m, which are compiled according to the railway industry standards and related materials for your reference.

Ⅰ. Fishplate material quality requirements

1. Splint material:
1) Joint splints are generally made of high-strength steel to meet the strength and durability requirements during use.
2) Specific materials may include alloy steel, stainless steel, etc. The specific choice depends on the use environment and requirements.

2. Quality requirements:
1) The joint splint should be manufactured by advanced processes such as precision cold bending, CNC cutting, and precision welding to ensure its dimensional accuracy and flatness.
2) The surface quality of the joint splint should be good, and defects such as cracks, folds, bubbles, inclusions and scars are not allowed.

3. Mechanical properties of joint splints:
Should comply with the provisions of relevant standards, including tensile strength, yield strength, hardness and other indicators.

Ⅱ. Application scope of various types of splints

1. Ordinary railways:
1) 43, 50, 60, 75kg/m joint splints are widely used in the connection and fixation of ordinary railway tracks.
2) These joint splints can ensure the stability and safety of trains during driving.

2. High-speed railways:
1) In high-speed railways, the requirements for joint splints are more stringent.
2) Heavyweight joint splints such as 60 and 75kg/m are more popular due to their high strength and durability.

3. Urban rail transit:
1) Such as subways, light rails, etc., also use these joint splints to connect and fix tracks.
2) According to the specific use environment and requirements, select the appropriate joint splint model and specification.

Ⅲ. Special railways:

1) Such as industrial and mining railways, forest railways, etc., these railways may have special use environments and requirements.
2) Choose customized joint clamps according to specific circumstances to meet special needs.