This standard specifies the test method for testing the spreadability and gap filling properties of solder on the parent material. This standard is applicable to the evaluation of the spreadability and gap filling properties of various soft and hard solders. GB/T 11364-1989 Test method for spreadability and gap filling properties of solder GB/T11364-1989 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test method of spreadability and clearancefilling bility for filler metalMain content and scope of application
This standard specifies the test method for testing the spreadability and clearancefilling bility of solder on the parent material. This standard is applicable to the evaluation of the spreadability and clearancefilling bility of various soft and hard solders. 2 Terminology
Clearancefilling bility refers to the ability of liquid solder to fill the capillary gap of the parent material during brazing. 3 Preparation of test piece
3.1 The test piece is in the form of a plate, and its size and the placement of the solder and flux during the test are shown in Figures 1 and 2. Flux
Figure 1 Spreading test
Figure 2 Clearancefilling test
3.2 The material of the test piece is the same as that of the actual component. Metal materials suitable for brazing should be selected in comparative tests. GB1136489
Unit: mm
3.3 The test surface of the spread specimen is required to be polished with No. 400 silicon carbide sandpaper to ensure that the surface is smooth and flat; the vertical plate brazing surface and the bottom plate brazing plane of the caulking test must be processed, and the vertical plate processing surface should be perpendicular to the bottom plate surface; burrs and burrs should be completely removed. 3.4 The test surface should be cleaned by appropriate methods to remove impurities such as oil and oxides. National Technical Supervision High 1989-05-08 Approved 168
1990-01-01 Implementation
4 Brazing filler metals and soldering agents
GB11364-89
4. 1 The test filler metals should be properly cleaned before the test. The solder used in the spreading test should be in block shape. If filament solder is used, it should be bent into a pattern. The amount is 0.1~0.2mm, and the allowable deviation is ±1%. The amount must be consistent during the comparative test. The shape of the solder used in the gap filling test is not specified, and the amount should be sufficient to fill the gap in the solder joint. 4.2 If a solder flux is required, a solder flux with high activity in the brazing temperature range should be selected. The amount should be able to cover the solder. In principle, the spreading test is set at 0.6~1.0cm*; the amount used in the gap filling test must be sufficient to fill the gap in the solder joint after it is melted. 5 Heating device
5.1 The heating device is a box-type electric furnace, as shown in Figure 3. Electric protection
Thermoelectric regulator
Figure 3 Heating device
Test platform
Peephole
Thermoelectric?
5.2 The furnace membrane of the heating device must have enough uniform temperature area. The uniform temperature area volume of the spreading test should be ≥1×b×hmm: 100mm×100mm×50mm: the uniform temperature area of ​​the caulking test should be ≥l×b×hmm: 150mm×80mm×60mm. 5.3 The heating device must have a measuring device for measuring the furnace temperature and the temperature of the test piece with an accuracy of 1%. The thermocouple for measuring the temperature of the test piece should be close to the lower surface of the test piece.
5.4 In order to facilitate the test, the heating furnace should be movable, and the furnace should be moved quickly and smoothly; in special cases, it can also be carried out in a fixed electric furnace. 5.5 In order to prevent the injection from damaging the furnace wall and furnace wire, the electric furnace can be equipped with a protective lining made of stainless steel. 5.6 The test platform and its supporting rods must be made of high temperature resistant metal materials. 6 Test method
6.1 The test platform should be preheated to the test temperature in the furnace. 6.2 Before the spreading test, the brazing material is placed at the center of the upper surface of the test piece. If a brazing agent is required, it should be covered on the brazing material, and then the test piece is placed flat on the preheated test platform removed from the furnace. Before the caulking test, the vertical plate and the bottom plate are placed in a vertical "" shape, and a heat-resistant fine wire with a diameter of 1 mm or a gasket with a thickness of 1 mm is placed at one end, and tied or spot welded with hot fine wires to position, and then the brazing material is placed on one side of the intermediate zero end. If a brazing agent is used, it should be covered on the brazing material, and then the test piece is placed flat on the preheated test platform removed from the furnace. The time the preheated test platform stays outside the furnace shall not exceed 15 s. 6.3 The test temperature is the liquidus temperature of the brazing material + 30~80℃ (for aluminum alloy testing, it is +30℃). 6.4 After the specimen reaches the test temperature, the specimen for the spreading test with a thickness of 1 mm shall be kept warm for 30 s; the specimen for the plate thickness of more than 1 mm shall be kept warm for 50 s; the specimen for the caulking shall be kept warm for 50 s.
GB 1136 4 - 89
6.5 The entry and exit of the specimen shall be completed within 2 s, and the shaking of the specimen shall be avoided when entering and exiting the furnace. 6.6 After the specimen is taken out of the furnace, it shall be air-cooled and the specimen shall be unloaded after the brazing material is completely solidified. 6.7 When conducting comparative tests, the number of specimens tested under the same conditions shall not be less than 3. 7 Result expression
7.1 After the solder spread test, the spreading area is measured with an area meter in cm2; 7.2 After the solder gap filling test, the gap filling length is measured in cm8 Record content
Test name, test number;
Base material brand, thickness; solder composition, shape, and amount; flux composition, amount, heating device, test temperature, insulation time, furnace entry and exit time: spreading area or gap filling length,
Solder spreading surface or gap filling outer surface state. 9 When the solder needs to be tested for spreadability and gap filling in a vacuum or protective atmosphere environment, the above clauses can be referred to. Additional notes:wwW.bzxz.Net
This standard was proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of Harbin Welding Research Institute. This standard was drafted by Harbin Institute of Technology. The main drafters of this standard are Fan Fuhua and Qian Yiyu. +170
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.