Simple device for testing corrosivity of tin solder to copper plate
By using a simple device to conduct constant temperature and humidity tests in a digital display electric heating drying oven, the problem of time-consuming and costly copper plate corrosion testing in the new product development stage of solder was solved, achieving rapid and low-cost testing and improving R&D efficiency.
Patent Information
- Application Number
- CN202520692036.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-14
AI Technical Summary
The copper plate corrosion testing in the development stage of existing tin solder products is time-consuming and expensive. Existing standard testing methods are expensive and require large equipment, making it difficult to meet the needs of rapid testing.
This simple device, consisting of a digital display electric heating drying oven, a tray, a corrosion test container, deionized water, and a sample rack, tests the corrosion of copper plates by solder in a constant temperature and humidity environment. The sample rack has slots to facilitate testing multiple samples, making it convenient to use and cost-effective.
It enables rapid and low-cost copper plate corrosion testing with solder, improving R&D efficiency, shortening the R&D cycle, and meeting the need for simultaneous testing of multiple samples.
Smart Images
Figure CN223910758U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to electronic solder welding production auxiliary device technical field, concretely relates to a device of copper plate corrosion condition of testing tin solder welding spot. BACKGROUND
[0002] At the moment of the rapid development of electronic technology, electronic products continue to move towards miniaturization and high performance, which further promotes the design of printed circuit boards to be more precise, and the requirements for welding quality and reliability are increasingly stringent. As key materials for electronic welding, the corrosion of tin paste and tin wire to copper plate as a substrate directly affects the long-term performance stability of the circuit board.
[0003] The electronic manufacturing industry has a series of strict standards and specifications for testing and evaluating electronic materials and processes. For example, the relevant standards formulated by organizations such as the International Electrotechnical Commission (IEC) and the American Electronics Industry Connection Association (IPC) clearly specify the copper plate corrosion test method for tin paste. However, for research and development testing, these standards have certain drawbacks: first, the test time is long, often exceeding 168 hours; second, the required test equipment is expensive and occupies a large area; third, the detection technology requirement is extremely high; fourth, the detection cost is high. Due to the long detection time and high technical requirements, detection resources cannot quickly meet the growing detection needs, and often face the situation of waiting for 1-2 months for detection samples. In view of this, such standard test methods are only suitable for product introduction inspection. In the development stage of new tin solder products, there is an urgent need for a device and method that can quickly test to adjust the research and development plan in time and speed up the research and development progress. SUMMARY
[0004] The utility model just aims at getting rid of the above-mentioned prior art limitation, provides a simple device that can quickly test the corrosion of tin solder to copper plate, to solve the problem of long time and high cost of copper plate corrosion test in the development stage of new tin solder products.
[0005] The technical scheme adopted by the utility model is as follows:
[0006] The utility model provides a simple device for testing the corrosiveness of tin solder to copper plate, which comprises a digital electric heating air drying oven, a tray placed in the digital electric heating air drying oven, a corrosion test container with an open top placed on the tray, deionized water contained in the corrosion test container, a water overflow port arranged in the middle of the outer wall of the corrosion test container, and a sample holder placed in the corrosion test container above the water overflow port.
[0007] Further, a support is arranged on the inner wall of the corrosion test container, and the sample holder is movably placed on the support.
[0008] Further, the sample holder has a length and a width different from those of a rectangular frame structure, and a clamping groove is symmetrically arranged on each of the two opposite surrounding plates.
[0009] Further, two or more clamping grooves are uniformly arranged on each surrounding plate.
[0010] According to the utility model, the copper plate sample to be tested is inserted into the clamping groove of the sample holder, and the sample holder is placed on the tray and then placed in the digital electric heating air drying oven. The water vapor generated by the deionized water in the corrosion test container can pass through the mesh holes at the bottom of the sample holder to maintain the required humidity of the sample test environment, and the excess deionized water can flow into the tray through the water overflow port, so that the sample does not directly contact the deionized water in the container. By placing the sample in a constant temperature and humidity environment for testing, the tester can observe the sample condition at any time, obtain the sample corrosion condition in time, and adjust the research scheme.
[0011] The utility model has the advantages of simple and compact structure, lightness, convenience, and easy operation. The sample holder is provided with a fixed clamping groove, so that the sample can be conveniently placed and taken out, and multiple samples can be simultaneously tested, thereby greatly improving the test efficiency. At the same time, the sample holder is convenient to place and take out, and the sample replacement and cleaning and maintenance work can be quickly completed, which improves the work convenience, reduces the test cost, and meets the diversified needs in actual operation. The test environment temperature of the utility model can be precisely controlled by means of the digital electric heating air drying oven, so that a constant temperature and humidity stable environment can be maintained during the sample test. During the test process, the tester can observe the sample condition at any time, obtain the sample change condition in time, and adjust the scheme. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a structural schematic diagram of the utility model;
[0013] Figure 2 is Figure 1 A-A cross-sectional view of the schematic diagram of;
[0014] Figure 3 is a schematic diagram of the sample holder. DETAILED DESCRIPTION
[0015] The utility model is further described below in combination with the drawings.
[0016] As Figure 1 , Figure 2 shown, a simple device for testing the corrosion of tin solder on copper plate, including digital display electric heating drying oven 1, placed in the tray 2 of digital display electric heating drying oven, placed on the tray of the top open corrosion test container 3, filled in the corrosion test container of deionized water 4, set in the outer wall of the corrosion test container middle overflow 5, placed in the corrosion test container and above the overflow of sample holder 7. Deionized water level is too high from the overflow out of the tray. In order to facilitate understanding the components placed in digital display electric heating drying oven, Figure 1 schematic drawing of the outer frame of digital display electric heating drying oven. As Figure 3 shown, the sample holder 7 is frame structure, including the rectangular bottom plate with uniform distribution mesh 7a, the surrounding plate 7b surrounded in the four around of rectangular bottom plate, the card slot 7c is symmetrically set on the opposite two surrounding plates. The sample holder can be the square frame structure of the same length and width, also can be the rectangular frame structure of different length and width, can be symmetrically set on the two pairs of surrounding plates of the sample holder card slot 7c, also can be as Figure 3The card slot is preferably provided with a plurality of card slots, and a plurality of test samples can be placed simultaneously. In order to facilitate operation, handles 8 are arranged on both sides of the top of the corrosion test container. The corrosion test container is a corrosion-resistant container made of stainless steel or polytetrafluoroethylene (PTFE) or polyether ether ketone (PEEK) and the like, which has the characteristics of high temperature resistance and acid and alkali corrosion resistance. In order to facilitate the matching of the sample holder, the corrosion-resistant container is preferably made into a cylindrical shape with a rectangular cross section, and the size is designed according to actual needs. The preferred size for laboratory use is 20-30cm in length, 25-35cm in width and 10-15cm in height. The sample holder is made of stainless steel which is resistant to acid and alkali corrosion, high temperature and has good mechanical strength. The mesh 7a on the rectangular bottom plate of the sample holder has a pore size of 0.1-0.5cm. A support 6 is arranged on the inner wall of the corrosion test container, and the sample holder 7 is movably placed on the support 6, which is flexible to take and place. The support 6 can be a block, a bracket or a buckle, as long as it can hold the sample holder.
[0017] The use method of the utility model is as follows:
[0018] First, a proper amount of deionized water 4 is filled into the corrosion test container 3, and the tin solder welded copper plate sample (conventional size 50mm*50mm*0.5mm) is inserted into the card slot 7c of the sample holder 7; then the sample holder is placed into the corrosion test container and placed on the support, and then the tray 2 and the corrosion test container 3 are placed into the digital electric heating air drying oven 1 in sequence; the power of the digital electric heating air drying oven is turned on, the temperature of the digital electric heating air drying oven is set to 40℃ or 85℃ (the set temperature is consistent with the IPC standard), the test is started, and the power of the digital electric heating air drying oven is turned off after the test time meets the test requirement, and the copper plate sample is taken out for observation and analysis.
[0019] The utility model discloses a simple and reliable device structure, flexible and efficient operation, strong practicality, and low manufacturing cost, which can effectively solve the technical problems of long time consumption, poor timeliness and high cost in the development stage of tin solder new product, effectively improve the research and development efficiency of tin solder, and shorten the research and development cycle.
Claims
1. A simple device for testing the corrosiveness of a tin solder to a copper plate, characterized by, The utility model relates to a corrosion test device, including digital display electric heating blast drying oven (1), tray (2) of placing in digital display electric heating blast drying oven, top open's corrosion test container (3) of placing on the tray, fill in the corrosion test container in corrosion test container (4) of deionized water, overflow (5) of setting in the corrosion test container outer wall middle part, sample holder (7) of placing in the corrosion test container and being located above the overflow, the sample holder (7) is frame structure, including the rectangular bottom plate with uniform distribution mesh (7a), the surrounding board (7b) of surrounding in rectangular bottom plate upper four around, the clamping slot (7c) of being opened in the symmetry on opposite two surrounding boards, the handle (8) of being provided with in corrosion test container top two sides, the corrosion test container is corrosion -resistant container, and the sample holder is corrosion -resistant sample holder.
2. A simple device for testing the corrosiveness of tin solder on copper plate as claimed in claim 1, wherein The utility model relates to a corrosion test device, including digital display electric heating blast drying oven (1), tray (2) of placing in digital display electric heating blast drying oven, top open's corrosion test container (3) of placing on the tray, fill in the corrosion test container in corrosion test container (4) of deionized water, overflow (5) of setting in the corrosion test container outer wall middle part, sample holder (7) of placing in the corrosion test container and being located above the overflow, the sample holder (7) is frame structure, including the rectangular bottom plate with uniform distribution mesh (7a), the surrounding board (7b) of surrounding in rectangular bottom plate upper four around, the clamping slot (7c) of being opened in the symmetry on opposite two surrounding boards, the handle (8) of being provided with in corrosion test container top two sides, the corrosion test container is corrosion -resistant container, and the sample holder is corrosion -resistant sample holder.
3. A simple device for testing the corrosiveness of tin solder to copper plate according to claim 1 or 2, characterized in that, The utility model relates to a corrosion test device, including digital display electric heating blast drying oven (1), tray (2) of placing in digital display electric heating blast drying oven, top open's corrosion test container (3) of placing on the tray, fill in the corrosion test container in corrosion test container (4) of deionized water, overflow (5) of setting in the corrosion test container outer wall middle part, sample holder (7) of placing in the corrosion test container and being located above the overflow, the sample holder (7) is frame structure, including the rectangular bottom plate with uniform distribution mesh (7a), the surrounding board (7b) of surrounding in rectangular bottom plate upper four around, the clamping slot (7c) of being opened in the symmetry on opposite two surrounding boards, the handle (8) of being provided with in corrosion test container top two sides, the corrosion test container is corrosion -resistant container, and the sample holder is corrosion -resistant sample holder.
4. A simple device for testing the corrosiveness of tin solder on copper plate as claimed in claim 3, wherein Two or more than two clamping slots (7c) are evenly arranged on each surrounding board.