David Lee

DIN 50150 :Vickers hardness, Brinell hardness and Rockwell hardness Conversion Sheet Noted: This sheet only for your reference, please don’t take this as your production, inspection or any other serious purpose. Tensile Strength Rm N/mm2 Vickers hardness HV Brinell hardness HB Rockwell hardness HRC 250 80 76.0 – 270 85 80.7 – 285 90 85.2 – […]

Common Ductile Iron Standards Comparison

Metallography Inspection
Hardness Inspection
Pressure Testing
Ultrasonic inspection

Manual moulding Manual moulding refers to the moulding process of using hand or hand tools to complete the main operations such as place tooling, compact and press sand to tight, remove tooling, place core box and adding gating system. The manual molding operation is flexible, the process equipment such as tooling and core box is

Beased on many years casting expericne ,Leesh casting engineer team sharing some knowledge of the Casting Alloy fluidity
1-Concept of alloy fluidity
2-Method of Expressing fluidity
3-Factors affecting fluidity

Precision casting, also known as investment casting or lost wax casting, is a manufacturing process that has been used for centuries to create highly detailed and dimensionally accurate metal parts. This method is widely employed in industries such as aerospace, automotive, medical, and jewelry due to its ability to produce complex shapes with excellent surface finishes. In this article, we will explore the precision casting process, materials, applications, and key considerations.

C86500 Is a kind of copper alloy material, mainly used in chemical machinery and equipment, with high electrical conductivity, thermal conductivity, corrosion resistance and mechanical strength characteristics. C86500 Copper by adding the right amount of tin, zinc and other elements, significantly improve the corrosion resistance and mechanical strength of the material, so that it can

1-Smooth surface finish Use the Aluminum mould and wax to make the pattern, then glue with the silica sol as binding agent, so you will see a very clear difference compare with Sand Casting .Mostly the roughness range from Ra 1.6 μm to Ra6.4 μm, but Leesh Engineering Investment Casting service can achieve a average above 3.2μm. 2-Save machining Time and

Knowing the surface roughness by different manufacturing method- it will let you make the right decision to choose the best suitable method and material, it will let you know the best budget. Process Roughness Range, Ra – Micrometers μm Maximum Minimum Flame Cutting 25 12.5 Snagging 25 6.3 Sawing 25 1.6 Planing, Shaping 12.5 1.6 Drilling 6.3 1.6 Chemical Milling 6.3 1.6 Elect.