GB/T 10699-2015Calcium silicate thermal insulation (English PDF)

4.1 Variety

4.1.1 According to the highest use temperature of the material, it is divided into type I (650°C) and type II (1000°C).

4.1.2 According to the product density, Type I is divided into No. 240, No. 220 and No. 170, and Type II is divided into No. 270, No. 220, No. 170 and No. 150.user If special density products are needed, it can be executed according to the agreement between the supplier and the buyer.

4.2 Shape

According to the shape of the product, it is divided into flat plate, curved plate and tube shell.

4.3 Product marking

The order in the mark is product name, variety, shape, length×width (inner diameter)×thickness, number of this standard.

The highest operating temperature is represented by I and II, and the flat plate, tube shell, and curved plate are represented by P, G and H respectively.

Example.

The plate with a length of 600mm, a width of 300mm, and a thickness of 60mm with a maximum operating temperature of 1000°C is marked as.

5.1 Appearance quality

5.1.1 Appearance defects

5.1.1.1 There shall be no missing edges with a length exceeding 30mm and a depth exceeding 10mm, and there shall be no edges exceeding 20mm in length and a depth exceeding 10mm.

10mm missing corner.

5.1.1.2 Edge damage with a depth of not more than 3mm and corner damage with a depth of not more than 4mm are not counted as appearance defects.

5.1.1.3 The total number of defects between the sizes specified in 5.1.1.1 and 5.1.1.2 shall not exceed 4, and the missing corners shall not exceed 2.

5.1.1.4 There should be no through cracks.

5.1.2 Thickness uniformity

The deviation between the local thickness and the average thickness of the product at any measurement position shall not exceed 3mm.

5.1.3 Verticality deviation

5.1.3.1 The deviation of verticality in the length and width directions of plate products shall not be greater than 6mm/m, and the deviation of verticality in the thickness direction shall not 2mm/m.

5.1.3.2 The deviation of the verticality of the ends of the tube and shell products shall not exceed 3mm/m.

5.1.4 Bend

5.1.4.1 The bending of flat products should not exceed 0.5% of the length (or width) or 3mm, whichever is greater.

5.1.4.2 The longitudinal bending of arc-shaped plates and shell products should not exceed 0.5% of the product length or 3mm, whichever is greater.

5.2 Size tolerance

Based on the marked nominal size, the allowable deviation of the product size should meet the requirements of Table 1.

5.4 Combustion performance

Calcium silicate itself is a non-flammable material. Products that use organic fibers as reinforcing materials should have a combustion performance classification of GB 8624-2012A (A1) level requirements.

5.5 Dissolvable ion content, pH value and corrosivity of the leaching solution

Most calcium silicate insulation products contain trace amounts of water-soluble chloride and other halides and sodium ions. When used in austenitic stainless steel, should Meet the requirements of GB/T 17393.When requested by the user, the test data of the soluble ion content and the pH value of the extract should be provided.

5.6 Hydrophobicity

When there is a hydrophobic requirement, its hydrophobicity should be greater than 98%, and other physical performance indicators should still meet the requirements of Table 2.

5.7 Asbestos content

It should not contain asbestos.

6.1 Appearance quality

According to the provisions of Chapter 5 of GB/T 5486-2008.Thickness uniformity is the thickness of the same specimen at any measurement position minus the flatness the difference in average thickness.

6.2 Allowable deviation of size

According to the provisions of Chapter 4 of GB/T 5486-2008.The dimensional deviation is the arithmetic mean of the dimensions of the same specimen measured in the same direction Subtract the difference of its nominal size.

6.3 Density and mass moisture content

According to the provisions of Chapter 8 of GB/T 5486-2008.

6.4 Dimensional stability

According to the provisions of GB/T 30806.Test environment conditions. temperature (23±2)°C, relative humidity (90±5)%, test duration 48h.

6.5 Even temperature burning performance

According to the provisions of Chapter 10 of GB/T 5486-2008, the burning temperature is 650°C for type I, 1000°C for type II, and the constant temperature time is 16h.

6.6 Thermal conductivity

According to the regulations of GB/T 10294, GB/T 10295, and GB/T 10296, the thermal conductivity above 300°C can be in accordance with the regulations of GB/T 10297 set. GB/T 10294 is the arbitration method.

6.7 Compressive strength

According to the provisions of Chapter 6 of GB/T 5486-2008.

6.8 Flexural strength

According to the provisions of Chapter 7 of GB/T 5486-2008.

6.9 Combustion performance

According to the provisions of GB/T 5464 and GB/T 14402.

6.10 Dissolvable ion content, pH value and corrosiveness of leaching solution

The content of soluble ions is in accordance with the provisions of JC/T 618, and the pH value and corrosiveness of the leaching solution are in accordance with the provisions of GB/T 17393.

6.11 Hydrophobicity

According to the provisions of GB/T 10299.

6.12 Asbestos content

According to HJ/T 206-2005 Appendix A.

7.1 Inspection classification

7.1.1 Factory inspection

The factory inspection items include. appearance quality, size tolerance, density, mass moisture content and compressive strength.

7.1.2 Type inspection

Type inspection items are all items specified in Chapter 5: Type inspection should be carried out in one of the following situations.

a) When a new product or an old product is transferred to a factory for trial-making type appraisal;

b) After the formal production, there are major changes in raw materials and processes, which may affect product performance;

c) During normal production, at least once a year;

d) When production resumes 6 months after the product has been discontinued;

e) When there is a big difference between the routine inspection result and the last type inspection.

7.2 Batching and sampling

7.2.1 Batch

The same raw material, formula, and the same production process are used to produce the same variety of products as a batch, and the production time limit for the same batch of inspected products should not exceed one week.

7.2.2 Sampling

7.2.2.1 Extraction of samples

Random samples should be taken from qualified products. Appearance quality and size allowable deviation inspection shall determine the sample size according to Table 3.Batches and samples in Table 3 this quantity refers to the number of plates or blocks or the number of entire sections of the tube and shell. The samples for physical performance inspection shall be selected according to the inspection items from the samples that have passed the appearance quality inspection.

The number of samples specified in the target method standard is randomly selected.

7.2.2.2 Sampling plan

See Table 3 for the secondary sampling plan.

7.3 Judgment rules

7.3.1 Appearance quality and size allowable deviation are determined according to Table 3.

7.3.2 When the inspection results of all inspection items meet the requirements of Chapter 5, the batch of products is judged to be qualified; otherwise, the batch of products is judged to be unqualified.

8.1 Logo

The ex-factory products should have a quality certificate, and the nominal value should be clearly indicated. Each packaging box should be marked with the product mark, quantity, name of the manufacturer, and location.

Address and date of production.

8.2 Packaging

The product should be packed in a box, and measures should be taken to prevent moisture and loosening. The packing box should be marked "No rollover" according to GB/T 191 "Fear of rain" sign.

8.3 Transportation

It should be protected from moisture during transportation and handled with care during loading and unloading.

8.4 Storage

Products should be stacked indoors by variety. The stacking site should be solid, dry and level.