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2022-12-23
What is the process of machining non-standard parts? How is it inspected?
Drawing is a process for fixing whiskers in the forging process of large shaft-type irregular parts, and it is also an important process affecting the quality of forgings. After drawing, the cross-sectional area of the billet is reduced, the length is increased, and it also plays a role in breaking up coarse crystals, forging internal pores and holes, and refining the as-cast structure. Thus, a uniform and dense forging is obtained. In the processing of irregular parts, people have gradually begun to realize the importance of the internal stress and strain state of large forgings to internal forging defects. From the general upper and lower flat anvil drawing to upper flat anvil drawing, lower V anvil drawing, and upper and lower anvil drawing, and then by changing the anvil shape and process conditions, WHF forging, KD forging, FM forging, JTS forging, FML forging, TER forging and SUF forging have been proposed. So what tests need to be done after the processing of irregular parts? In order to make the irregular parts have better performance, we need to carry out the following tests: 1. Hardness and hardenability test of irregular parts. Because it cannot be ruled out that the core part of the part will have low hardness. In general, if the material has good hardenability, the hardness of the bolt section can be uniformly distributed. As long as the hardness is appropriate, the strength and guaranteed force can also meet the requirements, but due to poor hardenability, although the strength is sometimes in the case of appropriate hardness. 2. Angle method inspection
2022-12-14
What are the methods for processing irregular parts? What is the heat treatment process for irregular parts?
[{"id": 1, "text": "What are the methods for processing irregular parts? What is the heat treatment process for irregular parts? Methods for processing irregular parts are as follows: (1) WHF forging method: This is a forging method with a wide flat anvil and strong pressing force. It is a drawing method developed by the Japan Iron and Steel Institute. It was introduced to China in the early 1980s. Its forging principle is to use upper and lower wide flat anvils with a high reduction rate. During forging, the large deformation in the center helps to eliminate defects inside the ingot, and it is widely used in the forging of large hydraulic presses. (2) KD forging method: Developed by a certain heavy machinery plant in 1966, based on the WHF forging method. Its principle is that the ingot has sufficient plasticity at high temperature for a long time. Under limited equipment conditions, wide anvil forging with a high reduction rate can be used. Using upper and lower wide anvils for forging is beneficial to increase the plasticity of the surface metal of the forging, increase the three-dimensional compressive stress state in the heart, and further effectively forge the internal defects of the cast ingot. (3) SUF forging method: This is a forging method that controls the anvil width ratio, comprehensively reduces the ingot height during forging, and then forges the cross section into a rectangular shape. It is a forging method that uses a wide flat anvil to flatten, further increasing the width of the range of metal plastic flow near the ingot axis, which is more beneficial to forging defects in the heart of the billet. (4) New F"}]
2022-12-05
What should be paid attention to in the processing of irregular parts? What is the principle of processing irregular parts?
[{"id": 1, "text": "What are the precautions for processing irregular parts? What is the principle of processing irregular parts? Let's take a detailed look below. We believe that through our introduction, you will have a more detailed understanding of this knowledge.\n\nI. Safety Precautions for Processing Irregular Parts\n(1) Easy operation, reduce the number of back and forth movements, and reduce the number of bending and tiptoeing.\n(2) Accurate and reliable positioning to prevent misoperation caused by slight vibrations.\n(3) The direction of movement of the running parts of the machine tool and equipment must comply with the regulations, and should be indicated by simple symbols.\n(4) Install interlocking mechanisms to prevent the operation parts from moving uncoordinatedly, and to prevent accidents caused by uncoordinated operation by multiple persons.\n(5) The structure and row position of the handles, handwheels and buttons should conform to the regulations. The start button should be installed in the cabinet or protective ring to prevent accidental touching. The handwheel and handle are installed on the shaft. During automatic feeding, the shaft will follow. Harm others. Therefore, an automatic release device should be installed.\n\nII. The Principle of Irregular Part Processing:\n(1) To ensure the processing accuracy of irregular parts, rough and fine processing should be carried out separately. Because the cutting amount is large during rough machining, the cutting force and clamping force of the workpiece are large, the heat is high, and the machined surface has obvious machining hardness"}]
2022-11-23
Square and round ventilation ducts: How should ventilation ducts be selected for use?
Air ducts: square and round. How to choose air ducts? Air ducts are commonly seen in our daily lives. Depending on their use, shape and manufacturing process, ducts are classified into various types. According to their applications and areas of use, they are categorized into environmental protection systems, exhaust systems, household central air conditioning ventilation, purification system exhaust, industrial ventilation systems, and mine gas extraction pipes. In terms of shape, common types include circular, square, and spiral ducts. How much do you know about the characteristics of air ducts? Let's have a detailed explanation below: ①. Hot-dip galvanized white stainless steel plate First of all, I believe everyone is familiar with this material, which is a traditional product. It has high strength, is readily available and easy to obtain, but is not corrosion-resistant, easily rusts, and is suitable for transporting dry, non-corrosive gases. It has no sound absorption or insulation function and requires additional insulation and heat preservation layers. A silencer is required, making the manufacturing process time-consuming and laborious. If the insulation layer is not ideal, cold bridges may occur, with air leakage of approximately 8-10%. ②. Inorganic fiberglass reinforced plastic (FRP) duct Inorganic FRP ducts, also known as fiberglass-reinforced magnesium oxychloride cement ducts, are a research achievement of the past ten years, and their quality is greatly affected by the material formulation.
2022-11-14
Ventilation ducts - square or round: why are ventilation ducts necessary?
Ventilation duct: How to choose the necessary ventilation duct? At present, ventilation duct production and processing are widely used in industrial production and engineering construction, involving a wide range of industries, such as hospitals, entertainment venues, large shopping malls, factories, office buildings and other buildings will assemble ventilation ducts. The processing and manufacturing of ventilation ducts have created a higher quality living environment for us, improved our quality of life, and allowed us to study and work with more peace of mind. If you want to assemble ventilation ducts, you must pay attention to suitable products. Let's talk about how to choose the necessary ventilation ducts. 1. According to the material, ventilation ducts are divided into various materials such as thick steel plates, galvanized steel plates, stainless steel plates, and fiberglass anticorrosion. When purchasing, you must first consider the advantages and disadvantages of different types of ventilation ducts and find more suitable ventilation ducts. 2. According to the use, ventilation ducts also include those used for air conditioning and purification systems, household central air conditioning systems, environmental control systems, and industrial ventilation systems. The appropriate ventilation duct should be selected according to the application site. Ventilation duct: Selection of ventilation ducts for different purposes
2022-11-03
Square and round ventilation ducts: What are the standards for duct installation?
Square and round ventilation ducts: What are the standards for duct installation? Rectangular flange ducts are used in various ways in daily life. It is essential to do a good job in the welding of rectangular flange ducts. First, it must be carried out according to the engineering drawings. Before laser cutting, the material size should be carefully checked, and material consumption should be prevented during laser cutting. If the pipe fittings are special, they should be cut overall first and then cut to control the amount of pipe used. Rectangular flange ducts are mainly used in industrial production and engineering construction, and their application range mainly involves: dust-free clean workshops for electronic component industrial production, oil fume purifiers, sterile testing workshops for the pharmaceutical and food industries, purification equipment, hotels, shopping malls, hospitals, factories, and office buildings. Geothermal heat pump air conditioning, dust removal and smoke exhaust systems for air pollution control, oil removal and other smoke exhaust pipes, industrial production environmental protection or workplace comfort air supply pipes, coal seam gas extraction systems for coal mine oil and gas extraction, and air supply systems for coal mine environmental control. If stainless steel pipes are used, mechanical cutting or plasma cutting machines should be used during laser cutting. Others can be cut by CNC flame cutting. The skew error of the opening port should not exceed 2mm. The production of rectangular flange ducts must follow standardized regulations.
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