Novice Q&A: What specifications should welding platforms buy

Hebei Fengquan Machinery Manufacturing Co., Ltd. is located in Botou City, Hebei Province, with convenient transportation and a good location. It is engaged in casting, machining, and machine tool manufacturing; The company. Laifengquan Machinery has always been dedicated to the manufacturing of heavy equipment, striving to become one of the solution providers for large cast iron measuring tools, granite measuring tools, large machine tools, and mechanical manufacturing solutions.

Many customers come to our company to purchase welding platforms; When it comes to not knowing what specifications to buy in order to ensure that one's workpiece does not deform when placed on the platform? Some people may also be asked the following question: How thick is the welding platform you want to purchase? And this is directly related to price and later use, so customers should clarify their own needs and characteristics before purchasing.

In fact, this thickness has several aspects for the welding platform. One is the thickness of the welding platform surface, one is the thickness of the side, and to be more precise, there is also the thickness of the reinforcing ribs. And what is the relationship between them? What impact will it have on the welding platform? How should the weighing capacity of the platform be calculated?

Below, the new editor will answer your questions:

1、 Thickness of welding platform surface

When choosing a welding platform, one should consider the thickness of the platform surface. The thickness of the casting panel is not easy to be too thin, and the working surface is the contact area during use. For example, when using a cast iron welding platform in welding work, it is inevitable to strike, and the force of the strike prevents us from using panels with welding platforms that are too thin. The thickness of the work surface should be designed reasonably according to its load-bearing capacity, accuracy, slotting, and other factors. The thickness of the work surface is crucial, as it should not be too thick for optimal performance and cost-effectiveness;

It also involves the fence and reinforcement. The fence is the thickness of the side wall of the welding platform, which plays a supporting role in use. The thickness and height are closely related to the support capacity of the platform. The reinforcement plays a tensile role, and the height and thickness of the reinforcement should be designed according to the load-bearing requirements. The height of the reinforcement is usually half reinforcement, full reinforcement, or flat reinforcement.

2、 Wall thickness of welding platform

When producing castings, if the casting wall thickness is too thin, defects such as insufficient casting and cold shut may occur. Usually, under casting conditions, each casting alloy has a wall thickness that can fill the mold, commonly known as the wall thickness of the casting alloy. When designing castings, the design wall thickness of the castings should not be less than the wall thickness.

When designing the welding platform, there should be a reasonable wall thickness. Gray cast iron has a suitable platform casting wall thickness under the specified casting method. It can not only weld the mechanical properties of the platform, but also prevent casting defects in cast iron plates.

Under the casting conditions, the wall thickness of welding platform castings that can be cast from different materials of gray cast iron varies. When the designed wall thickness is less than the wall thickness of the welding platform, the welding platform castings are prone to defects such as insufficient casting and cold shut.

3. The increase in wall thickness of the welding platform increases proportionally. On the same welding platform, the thickness of the inner wall should be smaller than that of the outer wall, and the thickness of the ribs should be smaller than that of the connecting wall, in order to ensure uniform cooling speed of each part of the wall.

4. When the cast iron flat plate is subjected to a large load and requires high stiffness, reinforcement ribs can be placed in weak areas according to the nature and size of the load. To avoid thick and large sections.

5. The wall thickness of the welding platform should be as uniform as possible. If the wall thickness of each part of the cast iron worktable differs too much, metal will accumulate at the thick wall, and during solidification shrinkage, shrinkage and loosening are likely to occur at the hot joint.

3、 Welding platform reinforcement ribs

The welding platform is divided into ribbed plate and box type according to its structure. Reasonable design of the thickness, height, and number of passes of the reinforcing ribs plays an important role in the accuracy of the welding platform. Strengthening the reinforcement can improve the structural strength of the welding platform and help prevent cracking due to excessive internal stress; And due to the use of cast steel material in the body, the strength of the cast iron mold against thermal expansion and contraction is increased. Even if cracks occur, they are easy to weld and repair, making them reusable and extending their service life.

From this, it can be seen that the bottom of the welding platform is designed with enclosure and reinforcement plates to increase the stability of the welding platform.

The internal design of the welding platform flat plate is reinforced with ribs. The cast iron mold used for the welding platform includes several reinforcing ribs, which are respectively located at the bottom of the body corresponding to the bottom of the casting groove. The upper end of the reinforcing ribs is connected and fixed to the bottom of the body, with a general distance of 500mm. If the size of the welding platform is small, it can also be designed according to the actual situation.

The general thickness of reinforcing bars depends on the cast iron process and wall thickness. If many ribs are used for reinforcement, the thickness of the reinforcing bars should be appropriate. The thickness of the reinforcing rib should not exceed 50% of its adjacent wall thickness. Experience tells us that violating the above guidelines will result in uneven gloss on the surface. Strengthening ribs can enhance the impact strength of products and achieve cost-effectiveness. Poor design can cause shrinkage marks and unexpected impact strength on the surface.

The design of reinforcement bars for welding platforms is also related to the cast iron material used. From a production perspective, the physical properties of welding platform materials such as viscosity and shrinkage rate have a significant impact on the design of reinforcement bars. In addition, the creep characteristics of cast iron are also an important consideration from a structural perspective.

4、 Calculate the load-bearing method of the welding platform

The load-bearing capacity of a welding platform refers to the degree of deformation of the welding platform after bearing the weight per unit area. We can usually consider it as the pressure that a welding platform can withstand without affecting normal use after placing the workpiece on it. Measure the thickness and structure of the welding platform working surface, and generally calculate the load-bearing capacity of the platform based on the thickness of the working surface mm * 1000. The method of extending the service life of welding platforms also requires reasonable use, thereby reducing the capital investment of enterprises in tools. The load-bearing capacity is closely related to its actual design and processing production. Requirements for load-bearing capacity, length, width, height, surface accuracy, weight, material, etc. All must comply with the requirements of the "Machinery Industry Standard of the People's Republic of China" JB/T7974-2001 for welding platforms.

From the above introduction, it can be seen that when purchasing welding platforms, we cannot only focus on the price of the welding platform and ignore the quality of the welding platform. We sincerely remind our customers not to only refer to the price when purchasing cast iron flat plates and ignore the quality of the plates. Besides the above points, what other aspects should be considered when selecting a high-quality welding platform?

The precision of the welding platform.

The main factor affecting the normal use of cast iron flat plates is the surface accuracy of the plates. High quality cast iron flat plates require uniform surface scraping and grinding processes, dense surface scraping processes, and smooth surfaces. Good scraping and grinding processes require 25 scraping points per 1 cubic centimeter on the surface of the cast iron flat plate.

The appearance of the welding platform.

When customers purchase a cast iron flat plate, the first thing they see is the appearance of the plate. A good cast iron flat plate is manufactured without any scratches or dents. It is also important to observe the bottom of the tablet. A good tablet has a clean bottom with no obvious sand particles.

Thirdly, the weight of the welding platform.

A good cast iron flat plate can be very heavy, and now many manufacturers are reducing the weight of the plate in order to reduce the manufacturing cost of the nameplate and achieve cost saving quality. Lightweight tablets have a low lifespan and unstable accuracy, and in severe cases, they may break during transportation. So here, the editor reminds customers to try to choose some heavy cast iron tablets when buying a good tablet.

Fourth, the price of the welding platform.

That's right, the editor is referring to the price of cast iron flat plates. As the saying goes, you get what you pay for. If you want to buy good cast iron flat plates, the price will be higher.

The above is the relevant information that the editor has compiled for everyone. Please follow the center for more information;.