Size ange (mm) CT Category From To 3 4 5 6 7 8 9 10.00 0.18 0.26 0.36 0.52 0.74 1.00 10.00 1.50 16.00 0.20 0.28 0.38 0.54 0.78 1.10 16.00 1.60 25.00 0.22 0.30 0.42 0.58 0.82 1.20 25.00 1.70 40.00 0.24 0.30 0.46 0.64 0.90 1.30 40.00 1.80 63.00 0.26 0.36 0.50 0.70 […]
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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
What is the investment casting advantages? Read More »
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.
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Country Standard Equivalent Grades of Grey Iron (Gray Cast Iron) ISO ISO 185 100 150 200 250 300 350 – China GB 9439 HT100 HT150 HT200 HT250 HT300 HT350 – USA ASTM A48 – NO.20 NO.30 NO.35 NO.40 NO.50 NO.55 NO.25 NO.45 NO.60 Germany DIN 1691 GG10 GG15 GG20 GG25 GG30 GG35 GG40 Austria European
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High Frequency Induction Quenching is a form of heat treatment in which a metal part, High Frequency Induction Quenching is heated by induction heating and then quenched. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly
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There is a table below shows the comparisons of various surface roughness scales. The information contained in the table is based on the assumption that metal surfaces are being tested, kind of visual inspection and has subjectivity judgement , so the comparison values may vary by up to 25% and for reference only Ra
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Leesh Silica sol precision casting (also known as investment casting or lost-wax casting) is built on advanced equipment, mature techniques, and extensive experience, ensuring that our products’ surface roughness consistently ranks among the best in the industry, typically achieves a surface roughness influenced by multiple factors, including silica sol coating quality, shell mold preparation, and metal pouring temperature. The standard
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Leesh and China Textile Machinery Group have singed first 10 Tons Textile Machinery parts (Investment Casting) contract at the Liaoning Mansion Hotel.
Leesh signed 10Ton Casting Read More »
1. Process Principles Comparison Process Pressure Source Filling Method Typical Pressure Range High Pressure Casting (HPDC) Hydraulic or mechanical pressure Molten metal injected at high speed 50~150 MPa Low Pressure Casting (LPDC) Compressed gas (inert gas) Molten metal fills mold slowly from bottom 0.01~0.1 MPa Gravity Casting Natural gravity (no external pressure) Molten metal flows
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Leesh Logo and Leesh Brand Philosophy from Chinese Taoist Culture Leesh takes the Big Dipper from Chinese Taoist culture as its spiritual totem, integrating the profound meanings of the seven stars into its corporate values. We build a development system centered on “Ambition, Sincerity, Prosperity, Wisdom, Integrity, Tenacity, and Transformation,” guiding the brand to advance
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