Cast iron welding platform

Many customers are not very clear about what specifications to choose when purchasing Weiyue Cast Iron Platform, so that their workpieces can be placed on the platform without deformation. It is also necessary to understand from the user how thick the purchased cast iron platform should be? This is directly related to both the price and later use, so it is better for customers to clarify their needs before purchasing.

Actually, this thickness involves several aspects for the cast iron platform. One is the thickness of the cast iron platform's surface, another is the thickness of the side, and to be more detailed, there is also the thickness of the reinforcing ribs. What is the relationship between them? What impact do they have on the cast iron platform? How should the platform's load-bearing capacity be calculated?

Below, Hebei Weiyue Machinery will provide you with detailed information on some details you need to be clear about when purchasing a cast iron platform:

First, let's talk about the surface thickness of the cast iron platform

When selecting a cast iron platform, the first thing to look at is the surface thickness of the platform. The thickness of the casting panel should not be too thin. The working surface is the area that comes into contact the most during use. For example, in welding work using a cast iron welding platform, it is inevitable to perform hammering. The force of hammering means we cannot use a welding platform with too thin a panel. The working surface should be designed with a certain thickness reasonably based on load-bearing capacity, precision, grooving, and other conditions. The thickness of the worktable surface is critical; it must ensure both the effectiveness of use and not be too thick, achieving a high cost-performance ratio.

High cost-performance also involves the rim and ribs. The rim refers to the sidewall thickness of the cast iron platform, which plays a supporting role during use. Both the thickness and height are closely related to the platform's support capacity. The reinforcing ribs serve a tensile function, and their height and thickness should be designed according to the load-bearing requirements. The height of reinforcing ribs is usually half-rib, full-rib, or flat-rib.

Next, let's talk about the wall thickness of the cast iron platform

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

Then, the cast iron platform should have a reasonable wall thickness during design. Gray cast iron, under specified casting methods, has an appropriate wall thickness for the platform casting. This can both ensure the mechanical properties of the cast iron platform and prevent casting defects in the cast iron plate.

Additionally, under certain casting conditions, the minimum wall thickness that can be cast for cast iron platforms varies with different materials of gray cast iron. When the designed wall thickness is less than the minimum wall thickness of the cast iron platform, defects such as insufficient pouring and cold shuts are likely to occur in the cast iron platform casting.

Of course, the wall thickness of the cast iron platform increases proportionally. On the same cast iron platform, the inner wall thickness should be smaller than the outer wall thickness, and the rib thickness should be smaller than the connecting wall, so that the cooling speed of each part of the wall is uniform. Or when the cast iron plate bears a large load and requires high strength and stiffness, reinforcement ribs can be placed in weak areas according to the nature and size of the load to avoid large cross-sections.

The wall thickness of the cast iron platform should be as uniform as possible. If the wall thickness of different parts of the cast iron platform differs too much, metal accumulation will occur in the thick-walled areas, and during solidification and contraction, shrinkage cavities and porosity are likely to occur at the hot spots.

Then there are the reinforcing ribs of the cast iron platform

According to its structure, the cast iron plate is divided into ribbed plate type and box type. Reasonable design of the thickness, height, and number of reinforcing ribs plays an important role in ensuring the precision of the cast iron platform. Reinforcing ribs can improve the structural strength of the cast iron platform, helping to prevent cracking due to excessive internal stress. Moreover, since the body uses cast steel material, it increases the resistance of the cast iron mold to thermal expansion and contraction. Even if cracking occurs, it is easy to weld and repair the crack, allowing for repeated use and greatly extending the service life.

From this, it can be seen that the design of the rim and ribs at the bottom of the cast iron platform is to increase its stability.

The interior of the cast iron platform plate should be designed with reinforcing ribs. The cast iron mold used for the cast iron platform includes several reinforcing ribs, which are respectively set at the bottom of the body corresponding to the bottom end of the casting groove, and the upper end of the reinforcing ribs is fixedly connected to the bottom of the body. The general distance is a spacing of 500. If the specifications of the cast iron platform are small, it can also be designed according to the actual situation.

The thickness of general reinforcing ribs depends on the casting process and wall thickness. If many ribs are used for reinforcement, the thickness of the ribs must be designed reasonably. The thickness of the reinforcing ribs should not exceed 50% of the connected wall thickness. Experience tells us that violating the above guidelines will result in uneven gloss on the surface. Reinforcing ribs can enhance the impact strength of the product and achieve effective results at an economical cost. Poor design can cause surface shrinkage marks and undesired impact strength.

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

From the above introduction, it can be seen that when purchasing a cast iron platform, one should not only care about the price but neglect the quality of the cast iron platform. Weiyue Machinery sincerely reminds customers not to only refer to the price when purchasing a cast iron plate but to ignore the quality of the plate.