表面处理设备在地坪工程施工中的应用（Application of surface treatment equipment in construction of Terrace Project）

1、表面处理设备在地坪工程施工中的应用（Application of surface treatment equipment in construction of Terrace Project）Application of surface treatment equipment in construction of Terrace Project- Shanghai shot blasting machine equipment manufacturing Co., Ltd., Peng WeiguoAccording to the statistics of China floor Assoc

2、iation, there are 3000 enterprises engaged in the production of floor materials at present. Each year, it produces millions of tons of floor materials of inorganic and organic materials, building 100 million square meters of floor construction. Based on the above situation, how to correct constructi

3、on in the construction of the floor, it is very important to ensure the quality of the construction. We Braim Tektronix product (BLASTRAC) is widely used in floor construction in Europe and the United States, and is located in the leading position in the market. As European and American famous floor

4、 construction companies enter Chinas flooring market, they also bring the advanced concepts and technologies of foreign architectural flooring into our country. Advanced BLASTRAC equipment also naturally enters china. Our statistics more than 10 years ago by construction into China and nearly 3 5 ye

5、ars Manufacturing Company Limited sales by Shanghai machinery and equipment used in various types of shot blasting Braim Tektronix equipment surface treatment of nearly 1000 sets. The application of these advanced equipment and technologies has promoted and accelerated the development of new type fl

6、ooring materials. The features and applications of surface treatment equipment are described below.First, the surface treatment of floor conceptsTreat the surface with chemical or mechanical processes to remove contaminants and impurities and clean surfaces for subsequent painting. The treated surfa

7、ce types are: concrete surface, natural stone surface, brick, wood and steel plate. By proper surface treatment, the bonding properties of the coating can be significantly improved and the service life of the coating can be extended. The surface treatment of the concrete base is only discussed here.

8、The concrete base surface treatmentRefers to the concrete base in order to meet the various requirements or protective coating on the surface of the pavement cleaning, cleaning and reach a certain roughness, processing and the necessary repair, to make it possible for the subsequent coating or pavem

9、ent and this base can be tightly bonded, improve coating or pavement the service life and avoid failure off and stripping process.Common substrate surface treatment methods are: chemical methods such as pickling, high-pressure water, flame burning and mechanical treatment, and so on. Since other met

10、hods are used only on special occasions, it is not common, so this article focuses on mechanical handling.The basic surface cleanliness, strength and roughness are key factors which affect the surface coating layer with base adhesion and shear performance, processing on the surface of the base (trea

11、tment) is the first step of the painting layer construction process in the days after the decision is whether the coating quality can fully exert the key properties of coating materials in one step.The basic requirements of concrete1 to the grass-roots strength requirements.The compressive strength

12、of concrete requires C20, and the surface moisture content is below 6% (detection depth 20cm).On the base of cleanliness requirementsThere shall be no floating slurry, sand, hollowing, pits, surface dust; no other attachments and dirt and contaminants.On the base of surface roughness requirementsThe

13、 surface roughness is a crucial factor in affecting the future of coating material with basic bond strength and shear performance, is a part of key construction technology can effectively play the performance of the material itself. To match the coating material, it must be constructed according to

14、the roughness requirement of the coating supplier before the base surface is painted. Different construction methods are chosen according to different roughness requirements.The following figure is not in accordance with the requirements of the base plane, especially cleanliness and roughness of non

15、-compliance, three months after the floor conditions.Therefore, in Europe and other countries on the concrete surface coating and pavement base in the two and thirty years ago with the corresponding norms, and as a part of the concrete floor coating and pavement construction technology can not be se

16、parated and made the corresponding requirements and regulations. Especially for different materials, the requirements of surface roughness are standardized, and the roughness grade standard is worked out;The roughness of the test has been standardized; the material suppliers and the industrial and c

17、ommercial enterprises must meet the basic requirements of the surface cleaning at the grassroots level; the requirements of roughness and the selection of construction machinery have made a clear direction.The following is the concrete surface roughness grade specified in ICRI technical guidance 037

18、32, and the contrast template.Both ICRI and SSPC set standards for concrete surface roughness, and standardized the roughness required for different surface treatments. See the following table (* represents applicability)Two 、 kinds of mechanical surface treatmentThe diamond grindingThe grinding mac

19、hine uses horizontally rotating diamond discs to produce friction on its own weight and base for leveling, removing the surface and cleaning the surface. Some grinding equipment can be used in conjunction with a variety of tools to achieve different applications, such as peeling, polishing and so on

20、. In the use of such grinding equipment, must be used in conjunction with dust removal equipment, the role of two: to achieve dust-free construction, reducing pollution two times. Cooling diamond discs to increase service life. In the selection of the grinding mill, different grinding discs must be

21、selected according to the characteristics of different concrete surfaces.Conventional application of diamond grinding:The concrete level of joint grinding and surface leveling.The removal of the coating on the surface of concrete.The rubber floor tile and removal.The grinding thin mortar layer.The p

22、retreatment of cleaning and molding epoxy concrete surface of the operation.At present, most of the ground floor construction companies are using grinding methods to deal with the ground floor, the use of the following problems:A large dust work.The ground roughness is not up to the requirements.The

23、 floating cement concrete base 100% can not remove.The defects cannot be exposed concrete base.We cant open the concrete pores, can make good washcoat and combined with the firm.The shot blasting treatmentShot blasting has been widely recognized and applied in the ground base treatment in recent ten

24、 years, especially in the construction instructions of epoxy flooring, it is clearly stipulated that shot blasting must be adopted.Principle: shot blasting machine by means of mechanical method of the pellets at very high speed, and the angle of projection onto the working surface, make steel high s

25、peed impact working surface, forming a thumping effect to surface treatment method of cleaning the impurities on the surface, attachments and other substances need to be cleaned.The surface of the rebound effect against negative pressure generated in the steel supporting dust collecting equipment an

26、d the impact itself, shot and impurity separation system together back to the machine itself, and the impurities and can be recycled with automatic separation and recovery. Good shot recycle inside the machine.All shot blasting equipment must be used in conjunction with the matched dust catcher:The

27、concrete, cleaning and pretreatment of steel surface before coating.The removal of the paint layer.The surface of the resin concrete paint removal.How to get even a rough surface and clean.The surface must be dry surface treatment.Advantages of shot blasting machine:The uniform surface roughness.The

28、 complete removal of mud and sand.It does not remove Aggregate Bond closely.The one-time construction, do not need to clean up, no environmental pollution.The high efficiency of construction.Such as shot wide size, there are 8 common , 10, 15 , 20, 30 and other specifications can be used.As shown in

29、 the previous table, the results of the surface treatment after shot blasting are determined by three parameters:When the diameter changes from small to big, equivalent to combat the use of hammer from small to large; resulting from small to large impact force, impact of concrete surface roughness b

30、ecomes rough.When the walking speed from slow to fast, the number of shots per unit time the impact surface increased; the equivalent number of hammer is increased; therefore the concrete surface roughness increase.The current work is changing from small to large, means that the number of shots with

31、in the same time the impact surface increased; also number equivalent to hammer increased; after the attack of concrete surface roughness also increased.3 milling machineThe high speed rotating knife drum drives the blade to impact the base surface, the blade hits the surface to be cleaned and the s

32、urface material is removed, using different types of blades to achieve different surface effects.The application of conventional milling machine:A variety of surface thick paint coating removal and cleaning.It can remove stickies, rubber and difficult to place the epoxy.The road marking removal.The

33、leveling concrete surface.Because the surface of the concrete treated by the method of milling is relatively rough, the method is used to treat the surface of the concrete, which is seldom used in the ground coating.Three, milling, grinding, shot blasting method comparisonThe concrete surface using

34、three kinds of method after surface effectAs shown in the above table, the tensile strength after shot blasting is shot blasting, grinding, milling and non treatment.Through the above description of concrete surface treatment methods and instructions, we believe that to ensure the quality of the construction of the ground floor should pay attention to the following points:After each process must have the standard and the test results are.The primary treatment is the foundation to ensure the quality of the project, the base is