News

We are glad to share with you about the results of our work, company news, and give you timely developments and personnel appointment and removal conditions.
  • As a precision turning parts supplier, HLR is equipped with precision CNC equipment, including CNC machining center, turning milling machining center, fastCNC lathe.

    2023-02-16

  • Compared with castings, metal forging can improve the structure and mechanical properties. Casting organization after forging method of thermal deformation due to metal deformation and recrystallization, make original bulky dendrite and columnar grain to grain is fine and uniform axial recrystallization organization, make the ingot in the original segregation, porosity, porosity, slag compaction and welded, such as its organization become more closely, plasticity and mechanical properties of the metal.

    2022-10-12

  • Forging can be divided into hot forging, warm forging and cold forging according to the forging temperature of billet during processing. The initial recrystallization temperature of steel is about 727℃, but 800℃is generally used as the dividing line, and above 800℃is hot forging. Between 300℃and 800℃is called warm forging or semi-hot forging, forging at room temperature is called cold forging.

    2022-10-12

  • Cold forging is generally processed at room temperature, while hot forging is above the recrystallization temperature of the billet metal. Forging is sometimes in a heated state, but when the temperature does not exceed the recrystallization temperature, it is called temperature forging. However, this division is not completely uniform in production.

    2022-10-12

  • Aluminum-silicon alloy, also called aluminum-silicon or aluminum-silicon. It HAS GOOD CASTING PERFORMANCE AND wear resistance, small thermal expansion coefficient, the largest variety in casting aluminum alloy, the largest amount of alloy, silicon content in 10% ~ 25%. Sometimes add 0.2% ~ 0.6% magnesium silicon aluminum alloy, widely used in structural parts, such as shell, cylinder, box and frame.

    2022-10-12