The national standard refers to the general requirements that general machines can be manufactured in accordance with national standards. For example, a machine that can be bought at any hardware store can be used if it is replaced with a screwdriver. Non-standard is just the opposite. Must be processed in accordance with that specific regulation. Non-standard processed parts are only owned by the manufacturer. They cannot be bought outside. The biggest advantage of our company's processing is customized processing. Non-standard automation

Mechanical non-standard parts processing technology requirements:

General technical requirements: 1. Remove oxide scale from the part; 2. There should be no scratches or abrasions on the surface of the part that damage the part surface; 3. Remove burrs and flashes.

Heat treatment requirements: 1. After quenching and tempering, HRC50 ～ 55; 2. High frequency quenching of parts, tempering at 350 ～ 370 ℃, HRC40 ～ 45; 3. Carburizing depth 0.3mm; 4. High temperature aging treatment.

Tolerance requirements: 1. Tolerances for unshaped shapes shall meet the requirements of GB1184-80; 2. Tolerances for unnoted length dimensions ± 0.5mm; 3. Casting tolerance bands are symmetrical to the basic size configuration of the blank castings.

Part edges and corners: 1. Unmarked corner radius R5; 2. Unmarked chamfers are 2 × 45 °; 3. Acute angles / sharp corners / sharp edges are dull.

Assembly process requirements:

1. Each seal must be saturated with oil before assembly;

2. The rolling bearings are allowed to be heated by oil heating, and the temperature of the oil must not exceed 100 ° C;

3. After the gear is assembled, the contact spots and backlash of the tooth surface should meet the requirements of GB10095 and GB11365;

4. Sealing packing or sealant is allowed when assembling the hydraulic system, but it should be prevented from entering the system;

5. The parts and components (including purchased parts and outsourcing parts) that have been assembled must have the certificate of the inspection department before they can be assembled;

6. The parts must be cleaned and cleaned before assembly, and there must be no burrs, burrs, scale, rust, chips, oil stains, colorants and dust;

7. Prior to assembly, review the main fit dimensions of parts and components, especially the interference fit dimensions and related accuracy;

8. The parts must not be scratched, bumped, scratched or rusted during assembly;

9. When tightening screws, bolts and nuts, do not strike or use unsuitable screwdrivers and wrenches. After fastening, the screw slot, nut, screw and bolt head must not be damaged;

10. Fasteners with specified tightening torque requirements must be tightened with a torque wrench and tightened with the specified tightening torque.

 Casting process requirements:

1. No severe defects such as cold insulation, cracks, craters, and penetrating defects are allowed on the casting surface.