Hot Bending Steel: What Are The Advantages?
The phrase “hot bending” describes the process of shaping a curve by adding weight while the temperature goes up. The actual benefit of hot bending steel, also termed as heat-assisted bending, is that the yield strength of the material is decreased from its room-temperature value. As a result, the machine that bends hot closed die forging goods must use less force. After the member has been heated by a flame, a furnace, or an induction coil, bending pressure is applied to it.
The element may be bent around specified forms, although in most situations, the bending force is delivered by one of the bending procedures mentioned in the previous section. The HSS members can be warmed from the outside or from within. When bending beams with a gag press, heat is usually only used when the beam’s strength is higher than what the machine can handle.
What Is Hot Bending Steel?
Induction turning is a very effective and carefully controlled process for bending pipes. During the induced bending process, local heating is performed utilising electrical power produced at a high frequency. A hot bending steel machine can also bend structural forms such as channels and W&H sections, in addition to pipes and tubes.
The process of bending metal using induction is also known as “hot bending,” “incremental bending,” and “high-frequency bending.” Induction bending is the ideal option when working with larger pipe diameters or when cold bending technology is restricted. Because it is the result of hot closed die forging, an induction coil is wrapped around the pipe to be bent, and the pipe’s circumference is heated somewhere between 850 and 1100 degrees Celsius.
The Advantages Of Hot Bending Steel
The primary advantages of inductive bending are as follows:
- Explicit material is less costly than standard components (such as elbows), and bends may be manufactured more quickly using explicit material than with standard features.
- Induction bends with a larger radius may often replace elbows, reducing friction, wear, and pump capacity.
- Induction bending decreases the system’s number of welds.
- There are no welds at the critical locations on the tangents.
- Less nondestructive testing results in cost savings.
- Induction bends are more potent than elbows with uniform wall thickness.
- The number of possible elbows and conventional bends may be considerably reduced.
- Less time is necessary to bring a product to market because a straight pipe is more accessible than elbows.
Hot Bending Method
For hot bending of pipes or pipeline systems, the following methods are followed:
- The hydraulically bent pipe is held in position by clamps on the machine bed.
- Induction-powered heating and cooling coils are wrapped entirely around the pipe. Changing the induction coil into three distinct planes produces more uniform heating.
- By modifying the radius arm and the front clamp, the radius of the bend may be altered. Only one pointer is required to indicate the exact degree of rotation.
- On the pipe are length indicators for the arc. Using a set of arms with a predefined radius, a line may travel gradually while bending forces are applied.
- Before beginning the induction bending procedure, the hydraulic pressure, volume of water, and switch settings are examined.
- After reaching the appropriate temperature range, the pipe travels between 10 and 40 millimetres per minute (mm/min) gradually. The method is complete when both the needed bend angle and the set arc length are reached.
- The exterior surface of the pipe is sprayed with water to cool the portion of hot pipe material instantly beyond the induction coil.
- The induction bend result is then retrieved, analysed, and evaluated for tolerance.
- The final step of the process is applying post-bend thermal treatments to induction bends.These therapies are used for several purposes, including stress relief and normalisation.
Standard bend angles (e.g., 45°, 90°, etc.) produce induction bends. On-demand, however, they may be made with certain bend angles. A single pipe junction may also accommodate complex out-of-plane curves. The bend radius in induction bending is dependent on nominal pipe diameters (D), including 5D, 30D, and 60D curves.
Uses For Hot Bending Steel
Hot bending steel offers structurally sound support and repair for a variety of components, making it the favoured bending method in industries such as:
- Construction & More!
Hot Bending Materials
- Stainless Steel
- Structural Steel
- Carbon Steel
The hot bending technique provides exact shaping, thickness preservation, and superior component strength. Hot bending steel mainly relates to many induction bending techniques. Induction bending is a very effective technique for turning pipes because it is quick, precise, and error-free. The process of induction bending includes heating a particular pipe area so that it may rotate rapidly. No filler material is required, and the bending results in little distortion. Numerous induction benders have opted for this shape because of its energy economy.
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