Tractor crane elevator counterweight fork lift ship weight Our company specializes in producing all kinds of specifications model 5kg-2000kg cast iron counterweight, standard counterweight in accordance with national standards and verification procedures. widely used in business, weighing instrument manufacture, quality and technical supervision inspection, inspection scale car power port, metallurgical coal, machinery and tractor cranes lift counterweight fork lift weights for ships

Counterweight is used to increase the weight for balance weights, is blasting machine melting into liquid and pour it into the mold that meet certain requirements, solidification, after clearing have predetermined shape, dimensions and characteristics of the casting process. Counterweight was one of the basis of modern machinery manufacturing technology.

Counterweight material:

1, According to GB 9439And GB 1348Manufacturing.

2According to GB 5612Provisions of gray cast iron Ф30Dan Zhu bar tensile strength, which can be divided into HT100, HT150, HT200, HT250, HT300And HT350Six kinds of materials.

3Material according to GB 5612Provisions of the nodular cast iron grades divided into Dan Zhu, cast block class.

4And mechanical properties of Dan Zhu blocks are divided into QT400-18, QT400-15, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2, QT900-2Eight kinds of materials.

5And mechanical properties of cast blocks QT400-18A , QT400-15A , QT500-7A , QT600-3A , QT700-2A Five kinds of materials.

Counterweight technical requirements:

1, Production methods, chemical composition and heat treatment methods of production, chemical composition and heat treatment technology, by the supplier's discretion, but must ensure that the provisions of this standard and related documents cast iron grades and corresponding indicators of mechanical properties.

2, If the organization or customers on the chemical composition and heat treatment method with special requirements, in the order provided for in the agreement or related documents by both parties.

3Mechanical properties.

4, Dan Zhu test bar (Piece )Mechanical properties.

5, According to Dan Zhu of this standard test bars into sample to determine the tensile strength of gray cast iron, nodular cast iron mechanical properties tensile strength and elongation of two indicators as a basis for acceptance.

6, Nodular weight tiedanzhu block impact test applies only to table 2Under brand, and only if the organization or customer requirement to do impact test, the shock value as evidence of the acceptance.

7, With heavy rail generally classified according to method is customarily divided into sand-weight iron and heavy iron.

8, sand-weight iron include green sand, dry sand, three types of chemical hardening sand.