GB/T 28672-2012The technical specifications for remanufacture of automotive components - Alternator (English PDF)

4.1 Dismantling

4.1.1

The disassembly of alternator shall comply with the provisions of GB/T 28675.

4.1.2

The alternator is disassembled into. pulley, fan, cover, regulator assembly, front cover assembly, rotor assembly, rear cover assembly, stator

Assembly, heat sink and so on.

--- Front cover components can be disassembled into. front cover, bearing cap, bearings, bushings, etc .;

--- Rotor assembly can be disassembled into. rotor, bearing;

--- Rear cap assembly can be disassembled into. Rectifier bridge, bearing sleeve and so on.

4.2 Classification

4.2.1

alternator classification should be consistent with the provisions of GB/T 28676.

4.2.2

The following parts should be new pieces.

a) bearing;

b) Bearing sleeve.

4.2.3

The following parts are recommended for new parts.

a) Fasteners;

b) Cover;

c) pulley;

d) brush spring;

e) brush.

4.3 cleaning

4.3.1

After cleaning the alternator dismantling parts should be consistent with the provisions of GB/T 28677.

4.3.2

Alternator cleaning methods commonly used solution cleaning method or solid, liquid shot peening method.

4.3.3

The front and rear end caps were cleaned, and the surface was shot peening (mounting holes, threaded holes should be protected).

4.3.4

The stator core selection appropriate solution for cleaning, the stator assembly surface rust treatment.

4.3.5

Rotor Assembly Select the appropriate solution for cleaning, the rotor claw on the outer surface of a very anti-rust treatment.

4.3.6

regulator assembly, rectifier bridge using the appropriate solution for cleaning. Rear cover and rectifier bridge can not be disassembled, the back cover sandblasting

Do not damage the rectifier bridge connecting plate and the electrical performance requirements of the surface.

4.3.7

pulleys, fans, bearing caps, bushing cleaning, the surface should be anti-rust treatment.

5.1 Pulley and fan

5.1.1

According to the requirements of 5.1.2, 5.1.3 Check the pulley and fan shall comply with the requirements of the product drawings, if not meet the replacement

New item.

5.1.2

When checking the pulley groove should pay attention to the pulley groove shall not have obvious signs of wear and tear, bump depression and other defects. Multi-slot pulley external

Shoulders should not have dent defects.

5.1.3

Check the fan shall not move the side, cracks, damage and other defects, and check the fan shaft hole size, axial runout should be consistent with product drawings

Required rules.

5.2 rotor assembly

5.2.1

According to the requirements of 5.2.2, 5.2.3, 5.2.4, 5.2.5 Check the rotor assembly should meet the requirements of the product drawings, if not meet

Replacement of new parts.

5.2.2

Set the diameter of the collector ring to detect radial runout at the bearing should be consistent with the requirements of product drawings.

5.2.3

Check the rotor assembly of the collector ring claw pole withstand voltage performance, should comply with the provisions of 3.8.1 of QC/T 413-2002.

5.2.4

Detection before and after the rotor bearing size, rotor diameter, should be consistent with product drawings requirements. Rotor claw pole outer circle should be no rub

Iron traces.

5.2.5

Check the built-in fan should not be cracked or damaged, measuring the height of the blades before and after the wind, the slight deformation of ultra-poor blades available nylon hammer

Shape, the height and shape of the blade should be consistent with the requirements of product drawings.

5.3 stator assembly

5.3.1

According to the requirements of 5.3.2, 5.3.3, 5.3.4, 5.3.5 Check the stator assembly should meet the requirements of product drawings, if not meet

Replacement of new parts.

5.3.2

The overall dimensions of the detection coil shall comply with the requirements of the product drawings.

5.3.3

The coil lead wire shaping treatment, leads to the insulation on the wire should be replaced.

5.3.4

Check the stator core may not bruise, the inner surface may not have iron traces.

5.3.5

Check the stator voltage withstand performance, should comply with the provisions of 3.8.1 of QC/T 413-2002.

5.4 rectifier bridge

5.4.1

According to the requirements of 5.4.2,5.4.3 check rectifier bridge should meet the requirements of the product drawings, if not meet the new parts should be replaced.

5.4.2

Check the rectifier bridge components may not have deformation, corrosion or cracks and other parts of the function defects.

5.4.3

Check the performance of the rectifier bridge electrical appliances should be consistent with the provisions of the technical agreement between the supply and demand of products.

5.5 regulator assembly

5.5.1

According to the requirements of 5.5.2,5.5.3,5.5.4 Check regulator assembly should meet the requirements of product drawings, if not meet the replacement

New item.

5.5.2

Check the regulator assembly may not have deformation, corrosion or cracks and other defects affecting the function of the parts.

5.5.3

Check the regulator assembly electrical performance should be consistent with the requirements of product drawings.

5.5.4

According to product technical requirements regulator regulator adjustment function.

5.6 front and rear cover assembly

5.6.1

According to the requirements of 5.6.2, 5.6.3 Check before and after the end cap assembly shall comply with the requirements of product drawings, if not meet the replacement

New item.

5.6.2

Check the front and rear end caps, there shall be no deformation, corrosion or cracks and other parts of the defect.

5.6.3

Inspection bearing hole diameter, all mounting holes and mouth size, etc. should be consistent with product drawings requirements.

6.1

will be cleaned, repair and testing of qualified components and replacement parts reassembly, assembly shall comply with GB/T 28679 requirements.

6.2

Assembly, should pay attention to the fastener assembly sequence, and according to product drawings to check the fastener torque.

7.1

Remanufactured alternator test environment conditions shall comply with the provisions of 4.2 of QC/T 729-2005.

7.2

Remanufactured alternator basic performance requirements and test methods shall comply with the provisions of Chapter 4 and Chapter 5 of QC/T 729-2005, the

The project should include.

a) appearance, installation size and tightening torque;

b) Appearance;

c) cold working performance;

d) hot work performance;

e) Regulator characteristics;

f) high temperature regulation voltage and temperature compensation coefficient;

g) noise;

h) temperature rise;

i) speeding j) Dielectric strength;

k) degree of protection;

l) Cold characteristic curve.

7.3

Durability test According to QC/T 729-2005 5.19 requirements. Alternators should withstand a durability test of 1600h, or

96000km road test, or high temperature 240h and high temperature high speed 400h and emergency speed 240h durability test.

After the test, the thermal performance values allowed to be 5% lower than the thermal performance values prior to the durability test, the voltage regulation values should be in accordance with QC/T 729-

2005, the provisions of 4.9.1, stator, rotor insulation resistance should be greater than 1Mohm.

8.1 factory inspection

8.1.1

factory inspection items are as follows.

a) Installation dimensions, tightening torque and appearance;

b) cold working performance;

c) adjust the voltage value;

d) Noise.

8.1.2

Other factory acceptance requirements in line with GB/T 28678 requirements.

8.2 Type test

8.2.1

The type test shall be conducted under any of the following conditions.

a) Remanufactured alternators before mass production;

b) Remanufactured alternators resume production after two years of shutdown;

c) After significant changes in the remanufacturing process.

8.2.2

Type test requirements In accordance with the provisions of 6.3 of QC/T 729-2005, type test items according to the provisions of 7.2.

9.1

Remanufactured alternator signs and packaging should be re-manufactured logo.

9.2

package comes with a motor factory inspection report.

9.3

Other packaging requirements According to the provisions of GB/T 28678.

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