What standards should a qualified masonry machine meet for quality?

What standards should a qualified masonry machine meet for quality?

1. Quality of hydraulic block machine castings, forgings, and weldments，All castings, forgings, and welded parts of the hydraulic block machine shall comply with the 

requirements of the drawings and technical documents.

1.2 Sandblasting treatment of all casting surfaces.

1.3 Important castings, forgings, and welded parts should undergo stress relief treatment.

1.4 For casting defects that do not affect use and appearance, repairs are allowed in accordance with relevant standards while ensuring the quality of use.Important 

load-bearing components such as the .

1.5 rack and main oil cylinder should have proof of material properties.

1.6 The internal inspection of key components shall comply with the requirements of GB/T 6402.

2. Parts and assembly quality of hydraulic block machine

2.1 The quality of machined parts shall comply with the provisions of JB/T 8828.

2.2 The assembly quality shall comply with the provisions of JB/T 5994.

2.3 Important fixed joint surfaces should be tightly fitted, and after tightening, use 0 The 05mm plug gauge inspection only allows partial insertion, and the insertion 

depth should not exceed 20% of the width of the joint surface. The cumulative insertable part should not exceed 10% of the length of the joint surface.

Important fixed joint surfaces should include:

a) The fixed joint surfaces of the column shoulder, locking nut, upper crossbeam, and lower crossbeam of the beam column hydraulic press;

b) The fixed joint surface between the end of the main oil cylinder or main piston (plunger) and the movable crossbeam.

2.4 Wear resistant measures should be taken for important moving pairs such as the main piston (plunger) and guide rail.

2.5 Purchased parts shall comply with relevant standards, and important purchased parts shall have quality assurance certificates.

3. Quality requirements for hydraulic, pneumatic systems and electrical equipment of hydraulic block machines

3.1 The hydraulic system of the hydraulic block machine shall comply with the provisions of GB/T 3766. All hydraulic components in the hydraulic system shall comply 

with the provisions of GB/T 7935.

3.2 During the operation of the hydraulic system, the temperature of the oil in the tank should not exceed 55 ℃.

3.3 The cleanliness level of the hydraulic system should comply with the provisions of Table 2 in JB/T 5994-1999.

3.4 The pneumatic system of the hydraulic press shall comply with the provisions of GB/T 7932.

3.5 Apply 500 Vd between the power circuit wires and the protective grounding circuit of the hydraulic press electrical equipment At c, its insulation resistance should not 

be less than 10 ohms.

3.6 All circuit wires and protective grounding circuits of electrical equipment shall undergo a voltage withstand test of 1000 V for 1 minute. No breakdown is allowed.

4. Appearance quality requirements for hydraulic block machine

4.1 The surface of the hydraulic block machine should not have any irregularities, roughness, or other defects not specified in the drawing.

4.2 The edges of the joint surfaces of the parts should be neat and symmetrical, with a displacement of no more than 1 mm. There should be no obvious gaps at the joint 

surfaces of doors, covers, etc.

4.3 Exposed hydraulic, pneumatic, electrical and other pipelines should be arranged neatly, installed firmly, and should not come into contact with relative moving parts and 

components.

4.4 The paint of the hydraulic block machine shall comply with JB/T 5000 According to the provisions of 5-7 in section 12-2007.