Coating standard: Hg / T 2243-91 machine tool finish

Core tips: 1 subject content and scope of application This standard specifies the technical requirements, test methods, inspection rules, packaging marks, storage, transportation, etc of machine tool topcoat This standard is applicable to all kinds of protective and decorative coatings for machine tool surfaces 2 reference standards GB 443 mechanical oil GB 1727 general preparation of paint film GB 1728 test method for drying time of paint film and putty film GB 1732 determination of film impact resistance GB 1740 film resistance to humidity and heat Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Home of coatings: 1 subject content and scope of application this standard specifies the technical requirements, test methods, inspection rules, packaging marks, storage and transportation of machine tool finish This standard is applicable to all kinds of protective and decorative coatings for machine tool surfaces 2 reference standard GB 443 mechanical oil GB 1727 general preparation method of paint film GB 1728 determination of drying time of paint film and putty film GB 1732 determination of film impact resistance GB 1740 determination of film damp heat resistance GB 1764 determination of film thickness GB 1765 determination of film damp heat resistance, salt fog resistance and weather resistance (artificial acceleration) method of film preparation GB 1771 determination of film durable salt fog 3186 sampling of paint products GB 5208 determination of flash point of paint rapid balance method GB 6144 determination of hardness of synthetic cutting fluid GB 6739 pencil method GB 6751 determination of volatile and non-volatile matter of paints and varnishes GB 6753.1 determination of fineness of paint grinding GB 6753.2 drying test of paint surface small glass ball method GB 6753.3 test method of storage stability of paint GB 6753.3 6753.4 determination of paint outflow time ISO Flow cup method GB 9271 paints and varnishes standard test panel GB 9274 paints and varnishes Determination of resistance to liquid media GB 9278 temperature and humidity for conditioning and testing of paint samples GB 9286 cross cut test of paint film GB 9750 marking of packaging for paint products GB 9754 paints and varnishes excluding metallic pigments Determination of 20, 60 and 85 specular gloss of paints and varnishes GB 9761 visual color comparison of paints and varnishes 3 product classifications machine tool topcoats are: type I, perchloroethylene paint; type II, polyurethane paint 4 Technical requirements: the products shall meet the technical requirements in the table below Table 1 project index type I type II paint film color and appearance outflow time (cup 6), s is not less than fineness, μ m is not more than nonvolatile content, and% is not less than red, blue and black other color grid test, 1mm, grade pencil hardness impact strength, kg · cm drying time is not more than surface dry, min dry, H covering power, g / m black red, yellow white, positive blue light color deep color complex Oil resistance (30d) cutting fluid resistance 23 ± 2 ℃, 3D 23 ± 2 ℃, 7d salt fog resistance, grade 14d 21d damp heat resistance, grade 14d 21d gloss (60 °) not less than storage stability (sedimentation), grade 20 50 28 33 1 B 50 15 1 20 80 60 50 40 No blistering, no blistering, falling off, light whitening allowed - 2-2-80 6 flat and smooth board 30 30-0 B 50 90 24 - ——50 40 no falling off, allowed, slight discoloration - no blistering, falling off, allowed slight whitening - 1-190 65 test method 5.1 general conditions of test 5.1.1 sampling shall be carried out according to the provisions of GB 3186 5.1.2 the test temperature and humidity shall be 23 ± 2 ℃ and 50 ± 5% relative humidity in accordance with GB 9278 5.1.3 the paint film shall be prepared according to GB 1727 and GB 9271, 23 ± 3 μ m and tested after plate preparation 5.1.4 the film thickness shall be in accordance with GB 1764 5.2 the outflow time shall be measured according to the provisions of GB 6753.4 5.3 the fineness shall be determined according to GB 6753.1 5.4 nonvolatile content shall be determined according to GB 6751 5.5 the color and appearance of the paint film shall be evaluated according to the provisions of GB 9761 5.6 the grid test shall be carried out in accordance with the provisions of GB 9286 5.7 pencil hardness shall be determined according to GB 6739 5.8 impact strength shall be measured according to GB 1732 5.9 the drying schedule shall be in accordance with the provisions of GB 6753.2, and the actual drying shall be determined in accordance with the provisions of GB 1728 5.10 the covering force shall be evaluated according to GB 1726 5.11 the gloss shall be evaluated according to GB 9754 5.12 the oil resistance shall be in accordance with the provisions of GB 9274 and immersed in the 20 oil specified in GB 443 5.13 the dry film thickness of cutting fluid resistant paint is 23 ± 3 μ M after drying for 24 hours, it is immersed in the synthetic cutting fluid meeting the requirements of GB 6144 5.14 humidity and heat resistance shall be tested according to GB 1740 5.15 salt fog resistance shall be carried out according to GB 1771 and rated according to GB 1740 5.16 the storage stability shall be tested according to gb6753.3 6 Inspection rule 6.1 All technical index items listed in this standard are type inspection items Under normal circumstances, type inspection shall be carried out every six months Outflow time, fineness, nonvolatile content, paint film color and appearance, scratch test, pencil hardness, impact strength, drying time, covering power and gloss are factory inspection items 6.2 the product shall be inspected by the inspection department of the manufacturer according to the provisions of this standard The manufacturer guarantees that all products meet the standard The product shall be provided with a certificate of conformity If necessary, use instructions and precautions shall be attached 6.3 the receiving department has the right to inspect the products in accordance with the provisions of this standard If the quality is found not to meet the technical requirements of this standard, both the supplier and the Demander shall re sample the products in accordance with GB 3186 for re inspection If the quality still does not meet the technical requirements of this standard, the products are unqualified, and the receiving department has the right to return the products 6.4 the product is sampled according to GB 3186, and the sample is divided into two parts, one is sealed for future reference and the other is used as inspection supplies 6.5 the package, quantity and mark of the product shall be inspected and checked before delivery In case of any damage or leakage of the package, discrepancy in the quantity and inconformity of the mark, it shall be handled in time 6.6 in case of any dispute on product quality between the supplier and the demander, the product quality supervision and inspection institution shall conduct arbitration inspection 7 marks shall be in accordance with GB 9750 8 Packaging, storage and transportation 8.1 products shall be stored in clean, dry and sealed containers, and the device shall not be more than 95% of the volume The product shall be kept ventilated and dry during storage to prevent direct sunlight and be isolated from the fire source When the temperature is too high in summer, it shall be cooled 8.2 the product shall be protected from rain and sunlight during transportation, and shall comply with the relevant regulations of the transportation department 8.3 under the storage and transportation conditions specified in 8.1 and 8.2, the effective storage period of the product is one year from the date of production 9 safety and health regulations 9.1 this product contains benzene, esters, ketones and other organic solvents, which are flammable liquids and have certain toxicity 9.2 safety measures such as ventilation, fire prevention, anti-static and anti poisoning shall be paid attention to at the construction site, and relevant regulations such as safety operation procedures for painting operation shall be observed Appendix a construction reference (Reference) A1 shall be evenly mixed before use A2 the paint is suitable for spraying When the viscosity is too thick, type I paint can use x-3 perchloroethylene diluent, type II paint can use polyurethane paint diluent or anhydrous xylene and anhydrous hexanone (1:1) to adjust the construction viscosity If the A3 I type paint is constructed under the condition of relative humidity greater than 70%, appropriate F-2 moisture-proof agent shall be added to prevent the paint film from whitening If A4 II type paint is two-component, paint shall be prepared according to the specified proportion How much to use and how much to match A5 the finish can be used with alkyd putty and perchloroethylene putty machine primer A6 beyond the storage period can be inspected according to the indicators specified in this standard If the result is satisfactory, it can still be used ————————- additional note: this standard is proposed by the science and Technology Department of the Ministry of chemical industry of the people's Republic of China This standard is under the jurisdiction of the National Technical Committee for standardization of coatings and pigments This standard is drafted by Northwest paint factory The main drafters of this standard are Li Jianwei, Shen zonglan, Lu Fuhua, Li Xiaolan and Yin Fangcheng Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,