GB 24459-2009Non-sparking beryllium copper alloy tools (English PDF)

3.1 Classification

The classification of beryllium copper alloy explosion-proof tools is shown in Table 1.

Table 1

The serial number is divided according to the opening according to the opening and the shank according to the other features

3.2 Size

3.2.1 single-headed wrench shown in Figure 1, the size of the specifications in accordance with Table 2.

Figure 1 single-headed wrench diagram

Table 2 single-headed wrench size unit in millimeters

specification

Opening size S head width S1 head thickness T length L

Basic Dimension Tolerance Maximum Maximum Tolerance ± 6%

10 10 + 0.19 + 0.04 26 6 110

13 13 + 0.24 + 0.04 33 7.5 135

16 16 + 0.27 + 0.05 40 9.5 160

18 18 + 0.30 + 0.05 44.5 10 170

+0.36

+0.06

52 11.200

58 11.5 220

30 30 + 0.48 + 0.08 70 13.5 270

+0.60

+0.10

82 15.5 320

3.2.2 double-headed wrench shown in Figure 2, the size of the specifications in accordance with Table 3.

Figure 2 double-headed wrench diagram

Table 3 double-headed wrench size unit in millimeters

specification

Opening S head width S1

Small end big end small end big end

Head length T length L

Basic dimensions Tolerance Basic dimensions Tolerance Maximum Maximum Maximum tolerance ± 6%

3.2.3 chisel as shown in Figure 3, the size of the specifications in accordance with Table 4.

Figure 3 Schematic diagram of the chisel

Table 4 chisel dimensions in millimeters

3.2.6 bucket lid wrench as shown in Figure 6 specifications and size.

The unit is in millimeters

Figure 6 barrel wrench diagram

3.2.7 live wrench as shown in Figure 7, the size of the provisions of Table 7.

Figure 7 live wrench diagram

Table 7 live wrench size units in millimeters

100 110 35 12 16 8

150 160 48 14 20 10

200 210 60 16 24 12

250 260 73 18 28 14

300 310 86 20 32 16

375 390 105 25 40 19

3.2.8 Pipe clamps As shown in Figure 8, the dimensions are specified in Table 8.

Figure 8 tube clamp diagram

Table 8 Pipe clamp dimensions in millimeters

specification

Active jaw body

A b L1 L2

Maximum clamping diameter

200 28 15 95 160 6 ~ 20

250 32 17 115.200 6 ~ 26

300 38 19 135 240 10 ~ 32

350 44 21 155 285 13 ~ 38

450 50 24 180 370 26 ~ 52

600 58 28 215 495 38 ~ 65

900 72 34 280 750 50 ~ 95

Note. The specification is expressed by the total length of the outer contour with the maximum clamping diameter.

The maximum clamping diameter range is generally expressed as the outer diameter of the pipe.

3.2.9 One word screw as shown in Figure 9, the size of the specifications in accordance with Table 9.

Figure 9 Schematic diagram of the word

Table 9 Dimensions of the word screw in millimeters

specification

Rotary front

4.5 × 50 50 5 0.6 4.5 ± 0.2

4.5 × 75 75 5 0.7 5.5 ± 0.3

200.200 minimum 47 ± 3 12 max 50 max 4 max

3.2.13 Wire Clamps As shown in Figure 13, the dimensions are specified in Table 13.

Figure 13 Schematic diagram of steel wire clamp

Table 13 wire clamp size in millimeters

specification

size

150 22 ± 0.7 12.5 ± 0.7 50 max 12 max 20 160 ± 4

175 24 ± 0.7 13.5 ± 0.7 52 max 13 max 22 185 ± 4

200 27 ± 0.7 14.5 ± 0.7 54 max 14 max 25 210 ± 4

3.2.14 Shape Hopper As shown in Figure 14, the mass dimension shall be as specified in Table 14.

The unit is in millimeters

Figure 14 Schematic diagram of a word

Table 14 The quality unit of the word pick is kilograms

Type quality tolerance

One word pick 3.25 + 0.2-0.1

3.2.15 The dimensions of the products and other types of products covered by this standard may be determined according to the requirements of both parties.

4.1 Materials

The material of the product is beryllium copper alloy.

Beryllium copper alloy Chemical composition.

Be 1.8% to 3.0%

Co + Ni 0.2% or more

Co + Ni + Fe 1.2% or less

Cu + Be + Co + Ni + Fe 99.0% or more

4.2 explosion resistance of beryllium copper alloy

Explosion-proof performance is divided into falling hammer, rotary friction, high-speed impact. Three kinds of explosion-proof performance can not be exploded.

4.3 size

Shall comply with the provisions of 3.2.1 ~ 3.2.15.

4.4 appearance

There should be no obvious scars, there should be no cracks, curling, bending and other defects, the handle should be straight.

4.5 Hardness

Should be above 35HRC.

4.6 Strength

After the inspection product quality should meet the following requirements.

4.6.1 stay wrench opening positive and negative front-end permanent deformation. specifications (10mm ~ 18mm) should be 0.15mm below, (19mm ~

46mm) should be 0.2mm below, and the test rod in contact with both sides of the opening should not be significantly damaged.

4.6.2 bucket lid wrench opening width of the maximum deformation should be 0.5mm below the contact with the square test rod surface should not be obvious

damage.

4.6.3 live wrench worm gear and the meshing of the movement and the movement of the body should be flexible, the deformation of the opening should be 0.5mm below, with the test

Rod indentation should be within 0.1mm or less.

4.6.4 pipe clamp and rod contact with the place should not be significantly damaged.

4.6.5 one word rotary test after the front end should not be defective, curved, other parts should not be damaged.

4.6.6 Plum wrenches with the specimen contact the mouth of the mouth should not be significantly damaged.

4.6.7 carp pliers when the maximum deformation of the handle. specifications 150mm,.200mm should be (2mm ~ 6mm), (2mm ~

8mm); maximum permanent deformation. specifications 150mm,.200mm should be 0.4mm, 0.5mm below.

4.6.8 The maximum permanent deformation of the handle should be less than 2% when the wire clamp is loaded.

4.7 performance

4.7.1 live wrench

a) The engagement of the worm and the rack should be minimized and the movement is flexible.

b) The minimum opening of the movable body shall be as specified in Table 15.

Table 15 units in millimeters

Specifications 100 150.200 250 300 375

Minimum opening 11 + 2 0 18.5 + 2 0 23.5 + 2 0 28 + 3 0 33.5 + 3 0 42 + 3 0

c) The clearance of the movable body is shown in Table 16.

Table 16

gap

specification

4.7.3 The combination of the main body and the rotary pole should be firm.

4.7.4 The joint between the carp and the blade and the contact surface of the blade should be narrowed and the movement and opening and closing of the hole and the hole of the main body should be flexible.

4.7.5 The smooth contact surface of the wire clamp joint should be narrowed and the opening and closing should be flexible.

4.8 Shear strength

4.8.1 The central part of the mouth of the carpal jaw clamps the wire specified in Table 17 and the shank cut off the wire by applying a load as specified in Table 17. Test

The wire shall comply with the requirements of GB/T 701.

Table 17 carp pliers shear force

specification

Wire

Diameter/mm Tolerance/mm

Tensile strength deltab /

mm2

150 2 ± 0.06

310N

(31.38kg)

200 2.6 ± 0.08

580N

(58.84 kg)

4.8.2 Wire clamp The central part of the edge of the cutting edge of the wire clamped by the table 18, the handle according to the provisions of Table 18 load, the wire cut off. Test

The wire shall comply with the requirements of GB/T 701.

Table 18 Wire Clamp Shear Force

specification

Wire

Diameter/mm Tolerance/mm

Tensile strength deltab /

mm2

150 2 ± 0.06 980N (100kg)

175 2.6 ± 0.06 1961N (200kg)

200 3.2 ± 0.08 2942N (300kg)

5.1 Chemical composition

According to the provisions of GB/T 5121.

5.2 Explosion-proof performance

According to the provisions of GB/T 23163, according to the product logo express gas selection test gas type.

5.3 Dimensions

Use a ruler, vernier caliper, micrometer or measuring instrument.

5.4 Appearance

With visual inspection method.

5.5 Hardness

According to the provisions of GB/T 230.1.

5.6 Strength

5.6.1 Before opening the wrench test, measure the size of the front end of the opening near the opening. As shown in Figure 15, insert the hexagonal test rod into the opening,

Table 19 specifies that the load is applied for 30 seconds and the size of the opening after the same position test is measured.

Test bar on the side of the dimensional tolerance in accordance with the provisions of Table 20, hardness 50HRC above. Do not touch the wrench at the edges of the test stick

The bottom of the opening.

Figure 15 wrench intensity diagram

Table 19 Wrench Strength Test Load

Specifications 10 13 16 18 21 24 27 30 32 36 41 46

Torque/(N · m)

(Kgf · m)

21.6

2.2

45.1

4.6

82.4

8.4

11.2

16.4

23.1

30.0

38.6

44.0

57.0

Table 20 Tolerances on the side dimensions are in millimeters

Dimension Interval Minimum Tolerance

29.4 (3) 49 (5) 96 (10) 196 (20) 294 (30) 490 (50)

Note. Test rod hardness (50 ~ 60) HRC.

Test rod shape for the four corners or hexagonal can be, the length is greater than the thickness of the mouth.

5.6.4 Pipe clamp As shown in Figure 18, insert the test rods specified in Table 23, and at the other end, after applying the specified load in Table 23 for about 1 min,

Determination of adjusting nut, jaw test after the break or obvious scars, the various parts of the abnormal.

Figure 18 tube pliers strength test schematic

Table 23 Test conditions for strength of pipe clamps

Specifications.200 250 300 350 450 600 900

Test rod diameter/mm 16 20 25 30 40 52 75

Torque/(N · m)

(Kgf · m)

(15)

(27)

(38)

(50)

(75)

(110)

(180)

Note. The hardness of the test rod is about 80 HRC.

5.6.5 Plum wrenches As shown in Figure 19, insert the hexagonal test rods that are compatible with it, apply the specified load on the other end of the wrench

After 30 s, the diagonal dimensions were measured at the same location after the test. Test rods should be fixed, the tolerance of the edge size to meet the provisions of Table 20, the hardness of the

50HRC above.

Figure 19 Schematic diagram of the strength test of the wrenches

Table 24 Plane wrench strength test conditions

Specifications 10 13 16 18 21 24 27 30 32 36 41 46

Torque/(N · m)

(Kgf · m)

39.2

82.4

8.4

15.4

19.6

27.2

33.5

5.6.6 carp pliers as shown in Figure 20, at the distance from the top of the jaw 2mm at a diameter of 3.2mm wire, the maximum width of the handle

Position the load specified in Table 25 to determine the maximum width of the deformation after the test, the location of any abnormal and permanent deformation.

Figure 20 plow pliers strength test schematic

Table 25 Test results of carp pliers strength test

Specifications Torque/(N · m) (kgf · m)

150 490 (48.05)

200 950 (93.16)

5.6.7 Wire Clamp As shown in Figure 21, a diameter of 3.2 mm is held at a distance of 2 mm from the top of the jaw. The maximum width

The position is applied to the load specified in Table 26 to determine whether there is any abnormality and permanent deformation after each part of the test.

Figure 21 Schematic diagram of strength test of steel wire tongs

Table 26 Steel wire pliers strength test load

Specifications Torque/(N · m) (kgf · m)

150 490 (48.05)

175 720 (70.60)

200 950 (93.16)

5.7 performance

With the feel and visual method, the size of the vernier caliper test.

5.8 Shear strength

5.8.1 The carpets are clamped at the center of the clamps in Table 27, and the wires are cut off according to the provisions of Table 27.

The test wire should meet the requirements of GB/T 701.

Table 27 Test conditions for carp shear force

specification

Wire

Diameter/mm Tolerance/mm

tensile strength

deltab/mm2

N kg

150 2 ± 0.06 320 (31.38)

200 2.6 ± 0.08 600 (58.84)

5.8.2 Wire Clamp The central part of the wire is clamped by the load of the provisions of Table 28,

The test wire should meet the requirements of GB/T 701.

Table 28 Test conditions for shear performance of wire clamps

specification

Wire

Diameter/mm Tolerance/mm

tensile strength

deltab/mm2

N kg

150 2 ± 0.06 980 (100)

175 2.6 ± 0.06 1961 (200)

200 3.2 ± 0.08 2942 (300)

6.1 Type of inspection

Product inspection points factory inspection and type inspection.

6.2 factory inspection

6.2.1 When the product is shipped, the manufacturer's quality inspection department shall carry out the factory inspection according to this standard. Qualified and accompanied by product quality

Certificate, the use of instructions, etc. before leaving the factory.

6.2.2 The factory inspection items are listed in Table 29.

6.3 Type inspection

6.3.1 Type tests shall be carried out in one of the following cases.

a) after the formal production, process, design, material changes;

b) the development of new products or old products to the factory production;

c) when the product is resumed for a long period of time after the production is resumed;

d) when a major quality accident occurs in the product;

e) annual testing once in normal production;

f) When the national quality supervision agency or contract is required to carry out the type inspection as required.

6.3.2 Type inspection items are shown in Table 29.

6.4 Inspection and judgment rules

6.4.1 type inspection should be from the factory inspection after passing the finished product randomly selected samples of the same material, which explosion-proof performance samples should be used with the same

Made of a material.

6.4.2 The base of the sample is (10 ~ 50) as a submission for the inspection lot, but not less than 6 for each product.

6.4.3 Determine whether or not to pass the inspection items specified in Table 29. In the event of one of the following conditions, the product is judged to be unqualified.

a) there is a serious category A failure;

b) that there are two Class B failures;

c) there is a Class B and a Class C failure;

d) there are three categories C failure.

Table 29 Test items

No. Test item Quality characteristics Category Requirement Test method

Type of inspection

Factory test type test

Material composition A 4.1 5.1 sqrt sqrt

Explosion - proof performance

7.1 mark

The product shall be marked with a permanent explosion-proof tool code Ex, a gas name, a manufacturer's name or a registered trade mark at a distinct location.

Ex

 explosion-proof tool code

Name of gas



Company name or registered trademark

Example.

Explosion-proof tool Ex, is CH4 or C3H8 gas inspection × × × × × production or registered trademark of beryllium copper alloy explosion-proof tool can be expressed as.

ExCH4 ××××× or ExC3H8 ×××××.

7.2 logo

Product packaging identification should be consistent with the provisions of GB/T 5305, should indicate the following.

a) National standard number of product implementation.

b) the grade of the product.

c) the name of the enterprise and the registered trademark.

d) the details of the enterprise address, telephone, zip code.

7.3 Packaging

7.3.1 The product packaging shall be in accordance with the provisions of GB/T 5305.

7.3.2 The packing of the product shall have the following documents.

a) packing list.

b) product certification.

c) Product manual.

7.4 transportation, storage

Products in the transport, storage process should be waterproof, moisture, can not be with the corrosive gas with a storage room.

END: Draft Version (GB 24459-2009)