This standard applies to the construction tools (bricks and tiles) specified in Chapters 2-4 of QB/T 2212.1-1996 "Terms of Construction Tools (Bricks and Tiles)". This standard specifies the materials, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of construction tools (bricks and tiles). QB/T 2212.2-1996 General Technical Conditions for Construction Tools (Bricks and Tiles) QB/T2212.2-1996 Standard download decompression password: www.bzxz.net

QB/T2212.2-1996
This standard is revised on the basis of the professional standards of the Ministry of Light Industry ZBI47001-1985 "Terms of Construction (Masonry) Tools", ZBI47002-1985 "General Technical Conditions of Construction (Masonry) Tools", and ZBJ47003-1985 "Inspection Rules, Marking, Packaging and Transportation of Construction (Masonry) Tools", and converted into the light industry standard. In the overall structure of the standard, the terminology of construction tools, general technical conditions and their product standards are retained, and the original ZBJ47003-1985 "Inspection Rules, Marking, Packaging and Transportation of Construction (Masonry) Tools" is cancelled, and some of its relevant provisions are merged into the general technical conditions. Product standards are retained according to the numbers in the terminology. A product standard for "diamond masonry shovel" is added. This standard changes the word "brick" in the brackets of the original name to "brick type" and puts it behind the standard name "construction tools" to make the hand tools used in construction operations more standardized, and makes clear limitations in the scope of application. This standard is a supporting standard. The terms and general technical conditions are based on the original standard, and the technical content that has been proven to be suitable for my country's situation in practice is retained. The main dimensions in the product standard have been optimized, several specifications have been added, and the limit deviation has been indicated. This standard has modified and improved some quality indicators.
This standard will abolish ZB47001~47003--1985 from the date of entry into force. This standard is proposed by the Quality Standards Department of China Light Industry Association. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. The drafting units of this standard: Shanghai Tool Industry Research Institute, Shijiazhuang Industrial and Agricultural Machinery Factory, Dalian House Equipment Tool Factory, Shanghai Fengxian Tool Factory No. 3, etc.
The main drafters of this standard are Cheng Yongfeng, Zuo Zhenjiang, Tian Limin, Qin Delin and Wang Chende. The National Tool and Hardware Standardization Center is entrusted with the interpretation of this standard. 239
1 Scope
Light Industry Standard of the People's Republic of China
Construction Tools (Bricks and Tubes)
General Technical Conditions
QB/T 2212.2-1996
This standard applies to the construction tools (bricks and tiles) specified in Chapters 2 to 4 of QB/T2212.1-1996 "Terms of Construction Tools (Bricks and Tubes)".
This standard specifies the materials, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of construction tools (bricks and tiles). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. QB/T2212.1—1996 Terminology of Construction Tools (Masonry) GB/T230 Metal Hardness Test Method
GB/T2828 Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Continuous Batch Inspection) GB/T5305 Hand Tool Packaging, Marking, Transportation and Storage 3 Materials
3.1 The working parts and connecting parts of construction tools shall be made of metal materials that meet the technical requirements of this standard. 3.2 The handles of construction tools shall be made of hard miscellaneous wood and plastic. 4 Technical Requirements www.bzxz.net
4.1 Hardness
The hardness value of the working parts of flat trowels, pressers, masonry shovels, masonry knives, brick knives, brick axes, and seam tie shall not be greater than 42HRC (masonry knives, brick knives, and brick axes are limited to the working parts).
4.2 Elasticity
The plate body of the flat trowel and the pressure plate without reinforcement must be elastic, and the flatness variation of the working surface due to bending shall not exceed 0.25mm. 4.3 Joint strength
The connection handle of the flat trowel, the pressure plate and the masonry shovel shall be firmly connected to the plate body, and shall not loosen or fall off after bearing a 980N hanging load. 4.4 Flatness and straightness
The flatness of the working surface of the flat trowel and the pressure plate body shall not exceed 0.5mm. There may be a special concave center in the middle of the plate body, and the straightness of the straight edges on both sides shall not exceed 0.6mm.
4.5 Wood moisture content
The wood moisture content of the handle shall not exceed 18%. 4.6 Appearance quality
The connection handle and the handle shall be assembled symmetrically with the plate body, the knife body and the axe body; the surface roughness R of the working part shall not exceed 3.2um, and the non-working surface roughness R. The value shall not be greater than 6.3um (except for welded parts and non-machined parts). The plate body shall not have cracks, burrs or rust spots; the wood of the handle shall not have worms or cracks, and the paint shall be evenly applied; the plastic handle shall be bright in color and shall not have bubbles or cracks. 5 Test methods
5.1 Appearance quality inspection
Inspect visually, and use standard samples for roughness comparison. 5.2 Moisture content inspection of wooden handles
Inspect with a moisture content tester.
5.3 Flatness and straightness inspection
Inspect with a plate and feeler gauge according to the method shown in Figures 1 and 2, and the results shall comply with the provisions of Article 4.4. Figure 1 Flatness Test
5.4 Hardness Test
Figure 2 Straightness Test
According to the provisions of GB/T230, the test is carried out within a range of 6 to 15 mm from the edge of the test piece (avoiding the handle), and the distance between each point shall not be less than 30 mm. If one point is unqualified, it is allowed to retest two points within the point and within a range of 5 mm in diameter with the point as the center of the circle. If both points are qualified, it is judged to be qualified.
5.5 Elasticity Test
According to the method shown in Figure 3, insert the plate into a 2mm wide and 30mm deep inspection fixture. The bending angle α of the flat trowel should be 15°~18° and the bending angle α of the pressure should be 20°~22°. After three consecutive bends, the permanent deformation produced shall not exceed the provisions of Article 4.2. Tools with reinforced ribs are not subject to elasticity tests.
Figure 3 Elasticity test
5.6 Joint strength test
Use the hanging weight method as shown in Figure 4, Figure 5 and Figure 6. During the test, the load should be gradually and slowly loaded, and the load holding time is 1min. 241
Figure 4 Joint strength test of column type connecting handle
6 Inspection rules
QB/T2212.2--1996
≤15m
Figure 5 Reinforced rib type connecting handle
Joining strength test
6.1 Products shall be shipped only after passing the inspection and shall be accompanied by product certificates. 6.2 Products shall be submitted for acceptance in batches, and the variety, type, specification and size of each batch of products shall be the same. 6.3 Acceptance inspection shall be carried out according to the one-time sampling plan specified in GB/T2828. 10mm
Figure 6 Crank-type connecting handle joint
Joint strength test
6.4 The classification of non-conforming products, inspection items, qualified quality level (AQL) and inspection level (IL) for acceptance inspection shall be in accordance with Table 1. Table 1
Classification and grouping of non-conforming products
Inspection items
Joint strength
Flatness and straightness
Moisture content
Appearance quality
Main dimensions
6.5 The manufacturer shall replace the non-conforming products found in the acceptance inspection. Qualified quality level (AQL)
6.6 The rejected batches after inspection may be reclassified or repaired by the manufacturer before submission for acceptance. Packaging, marking, transportation, storage
The packaging, marking, transportation and storage of construction tools shall be in accordance with GB/T5305. 242
Inspection level (IL)
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