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HOME > Products Line > Production Process |
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After alloy steel certificated company forge at |
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| 4S or more forging rate, check defective |
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| parts of material by normalizing and UT test. |
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| Drawing material test sheets |
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| Turney work with 10mm allowance from |
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| In thermal refining, charge carburizing heat |
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| treatment specimens at the same time aiming |
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| at the middle between HB235 and HB330. |
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| Draw heat treatment sheet (including time chart) |
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| Process leaving 2nd finishing margin in |
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| consideration of heat treatment gap on |
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| Do tooth process within 0.02mm shake of the |
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| inside diameter, external diameter, and |
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| Check span measurement after hobbing |
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| When charging products, charge specimens at |
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| same time and process at carburizing |
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| depth of 2.3 ~ 2.5 and HRC 61 ± 2. |
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| Draw heat treatment sheet |
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| (specimen microstructure examinations) |
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| Process at medium drawing tolerance at 1.6 |
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| or less of Cross Section Roughness. |
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| In the process of the inside diameter, process |
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| between -0.06mm ∼ -0.10 mm for Shrink-fit. |
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| Do drill and cutting processing according to |
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| tolerance and topology on drawing. |
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| After gear heating (190°C, 40min.), check the |
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| expansion amount (above 0.2mm) and PIN |
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| tolerance. Then perform shrink-fit. |
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| Cross section of gear (within 0.005mm),Pin |
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| (within 0.002mm) after confirming shake-up, |
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| get to work with target on ISO CLASS5. |
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| Examine defects in the course of processing |
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| or of material itself through nondestructive |
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| After the examination, draw the magnetic |
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| After tooth grinding, do cutting processing on |
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| sharp part of products and eliminate dust
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| According to the measurements on drawings, |
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| perform appearance inspection by Quality
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| guarantee Dept. and then perform the |
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| classification survey to issue the certificate. |
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| The products after the classification survey |
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| should be appropriately packed to arrange |
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| for the delivery to customers |
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