Study on multi-roller rotary feed forming mechanism of spiral tube with uniform wall thickness

Shi, Changshuai; Li, Jinping; Deng, Juan; Zhu, Xiaohua; Jia, Yunzhong

doi:10.1007/s00170-019-04903-8

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…The screw compressor rotor with asymmetric spiral teeth and steps can be directly formed by the FACR process, which obviously improve production efficiency and the material utilization rate. The multi-roller rotary feed forming (MRRFF) method [33,34] is a modified method for forming screw-shaped parts, and its schematic diagram is shown in Figure 6. During the MRRFF procedure, rolling wheels are radially located at the side of the workpiece.…”

Section: Solid Plastic Forming Processmentioning

confidence: 99%

“…The workpiece rotates at a constant speed around itself and simultaneously moves in the direction of its axis. Shi et al [34] examined the effect of process parameters on the product quality of the MRRFF process for uniform-wall-thickness spiral tubes. The experimental result revealed that a relatively high forming precision and relatively low damage value of 304 stainless was obtained under the rolling depth of 3.3 mm and formation speeds below 15 mm/s.…”

Section: Solid Plastic Forming Processmentioning

confidence: 99%

“…The experimental result revealed that a relatively high forming precision and relatively low damage value of 304 stainless was obtained under the rolling depth of 3.3 mm and formation speeds below 15 mm/s. The multi-roller rotary feed forming (MRRFF) method [33,34] is a modified method for forming screw-shaped parts, and its schematic diagram is shown in Figure 6. During the MRRFF procedure, rolling wheels are radially located at the side of the workpiece.…”

Section: Solid Plastic Forming Processmentioning

confidence: 99%

See 2 more Smart Citations

Research Progress on the Manufacturing of Screw-Shaped Parts in Screw Compressors

Wang,

Xiong,

Feng

et al. 2024

Applied Sciences

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Screw compressors are highly researched and developed prospects in industry because of their long service life, high transmission efficiency, low footprint and low vibration. As the key core part of the screw compressor, the screw is a typical, long-shaft, complex profile part. Its processing method, manufacturing accuracy and quality have an extremely important impact on the performance of the whole screw compressor. In this work, the research progress on the manufacturing of screw-shaped parts in screw compressors is summarised from the aspects of the cutting process, solid plastic forming, casting and additive manufacturing. The merits and demerits of these manufacturing processes are provided and discussed, which is conducive to the development of the high-efficiency, precise and high-performance forming process of screw-shaped parts. Additionally, a novel forming process is proposed to solve the problems of serious material waste and low production efficiency for the screw-shaped parts. In the proposed process, the semi-solid spherical grain is firstly prepared by radial forging and the isothermal treatment of long-shaft raw materials. The large strain energy can be stored in the bar by the radial forging of long-shaft raw materials, which is used to induce the generation of semi-solid spherical grains with the assistance of the isothermal procedure. After that, the screw is fabricated by the high-efficiency semi-solid closed extrusion process.

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Section: Solid Plastic Forming Processmentioning

confidence: 99%

Section: Solid Plastic Forming Processmentioning

confidence: 99%

Section: Solid Plastic Forming Processmentioning

confidence: 99%

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Research Progress on the Manufacturing of Screw-Shaped Parts in Screw Compressors

Wang,

Xiong,

Feng

et al. 2024

Applied Sciences

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“…The all-metal screw drill stator is the core component of oil resource drilling equipment, because of its excellent properties such as high temperature resistance and wear resistance, it has a broad application prospect in deep well and ultra-deep well oil exploitation [1][2][3][4][5][6][7]. Due to the complex structure of all-metal screw drill stator and the large amount of removal [8,9], traditional machining has the problems of serious tool wear, low e ciency and high scrap rate, which cannot meet the production demand [10,11].…”

Section: Introductionmentioning

confidence: 99%

Research on the precision forming cathode design method of electrochemical machining all-metal screw drill stator

Tang,

Wang,

Zhang

et al. 2023

Preprint

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In order to shorten the cathode design cycle, reduce design cost and improve forming accuracy for all-metal screw drill stator electrochemical machining (ECM), this paper proposed a precision forming cathode design method based on particle swarm optimization BP neural network (PSO-BP). The cathode design algorithm model of all-metal screw drill stator electrochemical machining was established, completed the three-side feed cathode design. By using self-developed large scale horizontal CNC electrochemical machining equipment, under the condition of voltage 19V, electrolyte 15%NaCl, electrolyte temperature 35 ± 1℃, electrolyte inlet pressure 1.6MPa, and feed speed 10mm/min, the stable and reliable electrochemical machining processing of the 4-meter length of 38CrMoAlA all-metal screw drill stator was completed. The contour forming accuracy is ± 0.03mm, and the surface roughness is Ra0.848µm. Research showed that it is an efficient and feasible method to design the electrochemical machining three-side feed cathode of all-metal screw drill stator using particle swarm optimization BP neural network.

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“…Zhu et al. studied the roll forming of a spiral tube with equal wall thickness of the stator, the research results show that this is a feasible machining method, but the machining accuracy of the stator is low [10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Research on Hydroforming Micro-Sized Spiral Pipe With Equal Wall Thickness

Shi

Zhu

2021

Preprint

Self Cite

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The positive displacement motor is currently the most widely used downhole power tool. In order to reduce the cost of drilling and exploration, small boreholes have been used to replace conventional boreholes. The working conditions are complex, so a high-performance positive displacement motor for micro-holes is required. In order to solve the problem of the difficulty in processing the inner spiral surface of the small size and large aspect ratio, the tiny size spiral tube stator is proposed in this paper and the normal temperature and hot state hydroforming of the small size spiral tube is proposed in this paper. The material is 42crmo, and the uniaxial tensile test is carried out at different temperatures. According to the material mechanical properties experiment and the forming process, the finite element model of the hydroformed spiral tube at different temperatures is established. The study found that the suitable tube size is 48mm in outer diameter, 5.5mm in wall thickness, and 1405mm in length. When the processing temperature is 700℃, the hydraulic pressure required for full expansion of the spiral tube is only 70MPa, and the rebound of the spiral tube is very small. The minimum wall thickness is the maximum of 4.31mm, and the maximum wall thickness is the minimum of 5.356mm, and the wall thickness distribution is relatively uniform. The maximum plastic strain of the spiral tube is 0.65, so the damage to the material during the forming process is small, and when the processing temperature is 700℃, the quality of the spiral tube is better.

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Study on multi-roller rotary feed forming mechanism of spiral tube with uniform wall thickness

Cited by 6 publications

References 16 publications

Research Progress on the Manufacturing of Screw-Shaped Parts in Screw Compressors

Research Progress on the Manufacturing of Screw-Shaped Parts in Screw Compressors

Research on the precision forming cathode design method of electrochemical machining all-metal screw drill stator

Research on Hydroforming Micro-Sized Spiral Pipe With Equal Wall Thickness

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