1 Scope
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of fire axes.
This standard only applies to fire-fighting flat axes and fire-fighting pointed axes.
2 Quoted standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication of this standard, the versions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below.
GB 191—90 Packaging, storage and transportation pictorial markings
GB/T 230—91 Metal Rockwell hardness test method
GN 11—82 Fire protection product model Preparation method
3
3.1 Type product classification
3.1.1 The appearance of the fire-fighting flat ax is shown in Figure 1.
3.1.2 The appearance of the fire-fighting pointed ax is shown in Figure 2.
3.2 Model
3.2.1 The model preparation method of fire axes should comply with the provisions of GN 11-82.
3.2.2 The composition of the fire ax product model is as follows:
Marking example: a) GFP 810 means a fire flat ax with a total length of 810mm;
b)GFJ 715 means a fire-fighting ax with a total length of 715mm.
4 Technical requirements
4.1 Materials
4.1.1 Fire ax heads should be made of steel that meets the technical requirements of this standard.
4.1.2 The handle of the fire ax should be made of hard wood, and the moisture content should not be greater than 16.
4.2 Surface quality
4.2.1 The surface roughness of the polished part of the fire ax head should not be greater than .
4.2.2 The head of the fire ax shall not have cracks, laminations or rust spots. The painted surface shall be smooth, uniform in color, and free of paint leakage, blistering, peeling and shrinkage.
4.2.3 The wooden surface of the fire ax handle should be smooth, free of decay, knots and insect holes, and should be coated with varnish.
4.3 Dimensions and quality
4.3.1 The dimensions and quality of the fire-fighting flat ax should comply with the provisions of Table 1. 4.3.2 The size and quality of the fire-pointed ax should comply with the requirements in Table 2.
4.3.3 The limit deviations of dimensions not noted in Tables 1 to 2 shall be manufactured according to the coarsest grade in GB/T 1804-92.
4.4 Symmetry
4.4.1 As shown in Figure 3, the deviation between the facet of the fire ax head and the center of the ax hole should be less than 2mm.
Note: AA is the center line of the fire ax head facet, and BB is the center line of the fire ax hole.
4.4.2 The deviation (i.e. symmetry) between the fire ax blade and the center line of the end of the ax handle should be less than 8mm.
4.5 Hardness
The hardness of the fire ax blade is HRC 48-56, and the hardness of the ax hole wall should not be greater than HRC 35.
4.6 Impact resistance
The blade of the fire ax should be able to withstand the heavy hammer blow specified in Table 3. There should be no cracks on the blade after the blow, and the amount of deformation should not be Greater than 2mm.
4.7 Pull-off resistance
The pull-off force between the fire ax head and the ax handle should be greater than 15 000N (the ax handle should not be broken during the test, and the fit should not be broken after the test) There should be some looseness).
4.8 Flat blade cutting performance
The flat blade of the fire ax should be able to cut Q 235A round steel with a diameter of 10mm, and the blade should have no obvious missing edges or curled edges. and cracks.
4.9 Chiseling performance of the sharp edge
The sharp edge of the fire ax should be able to chisel C20 concrete test blocks, and the edge should have no obvious curls or cracks.
5 Test method
5.1 Inspection of moisture content of ax handle
Check the moisture content of fire ax handle with a hygrometer.
5.2 Surface quality inspection
5.2.1 The surface roughness of the fire ax head should be compared with a surface roughness sample block, or checked with a surface roughness inspection recorder.
5.2.2 Visual inspection of the surface of the fire ax head and ax handle.
5.3 Dimensional and quality inspection
5.3.1 Use universal measuring tools to inspect the dimensions of the fire ax head and ax handle
5.3.2 Fire ax The quality of the ax head should be checked with a scale with an accuracy of not less than 0.05kg
5.4 Symmetry inspection
The symmetry of the fire ax should be checked with a universal measuring tool.
5.5 Hardness test
5.5.1 The hardness of the fire ax blade and ax hole wall shall be clamped with special fixtures and shall be carried out in accordance with the provisions of GB/T 230.
5.5.2 The hardness test of the fire ax should be measured at any three points within 10mm from the ax edge. If one point is unqualified, two points should be measured in the test area near that point. The other two points Should be qualified.
5.6 Impact test
The impact test of the fire ax head should be carried out on a special testing machine. The test is shown in Figure 4. The ax head is clamped with a special fixture, and the supporting point on the fixture is the ax hole. The end is far from the point where the ax blade is hit, and the lower support point is the end of the ax hole that is near the point where the ax blade is hit. The width of the clamp should be greater than the width of the ax body being clamped. The center of the heavy hammer should be struck within the range of 15-25mm from the ax blade edge, and the heavy hammer should be freely dropped and impacted twice at a height of 1m. The test results should comply with the provisions of 4.6.
5.7 Pull-off test
The pull-off test of the fire ax shall be carried out on a material testing machine, and the test results shall comply with the provisions of 4.7.
5.8 Flat blade cutting test
Take a Q235A round steel with a diameter of 10mm, place it horizontally on a mild steel flat plate, hold the ax handle, and align it with the flat blade After cutting the round steel no more than three times until it breaks, the ax edge shall comply with the provisions of 4.8.
5.9 Sharp blade chisel test
Take a standard C20 concrete test block, hold the ax handle in your hand, use the sharp blade to chisel the test block no more than three times until it breaks. , the ax blade edge should comply with the provisions of 4.9.
6 Inspection Rules
6.1 Factory Inspection
6.1.1 The fire ax must be inspected by the factory quality inspection department and can only leave the factory after passing the inspection. And accompanied by a certificate of conformity.
6.1.2 Factory inspection should be carried out according to the following items:
a) Dimensional and quality inspection
b) Surface quality inspection
c) Symmetry
d) Hardness test
e) Ax handle moisture content test
f) Pull-off test
6.1.3 When sampling, three pieces are randomly selected from each batch, and 100 pieces of products of the same variety, model and specification are considered as one batch (less than 100 pieces are also considered as one batch).
6.1.4 If any of the inspection results does not comply with the provisions of this standard, double sampling of the unqualified items should be re-inspected. If the re-inspection results still do not meet the provisions of this standard, the entire batch of products as unqualified.
6.2 Type inspection
6.2.1 Type inspection shall be carried out in one of the following situations:
a) During trial production and finalization of new products;
b) If the final product has major changes in materials, design, process or structure, which may affect product quality;
c) After two years of normal production;
d) When the quality supervision agency proposes type inspection requirements.
6.2.2 The content of type inspection shall include all the contents specified in Chapter 4 of this standard.
6.2.3 For type inspection, 300 products of the same variety, model, and specification are considered a batch (less than 300 products are also considered a batch), and 5 products are randomly selected from them as samples.
6.2.4 If any of the inspection results does not comply with the provisions of this standard, double sampling of the unqualified items should be re-inspected. If the re-inspection results still do not comply with the provisions of this standard, then The products in this type inspection are unqualified.
7 Marking, packaging and storage
7.1 Marking
7.1.1 Product mark
The product should be marked with ：
a) Product trademark;
b) Product name;
c) Product model and specifications;
d) Manufacturer Name;
e) Production date.
7.1.2 Packaging mark
The packaging box should be marked with:
a) Name and address of the manufacturer;
b) Product trademark, name, model, specification, batch number, standard number;
c) Number of pieces, weight (net or gross weight), external dimensions;
d) Production date;
e) It should be marked with signs such as "Prevent Rain", and its marking method should comply with the relevant provisions of GB 191-73.
7.2 Packaging
7.2.1 Packaging materials
Each fire ax should be packed in paper or plastic bags. It must be packed in wooden boxes or plastic bags when leaving the factory. Cartons are assembled and fixed in the box.
7.2.2 The packaging box should be accompanied by a product certificate.
7.3 Transportation and Storage
7.3.1 Fire axes should be protected from heavy pressure and collision during transportation.
7.3.2 Fire axes should be stored in a dry, ventilated place free of corrosive chemicals.