A novel rotatable inner-surface laser cladding method

2021 ◽  
Author(s):  
Keyan Wang ◽  
Chong Xie ◽  
Kaiping Du ◽  
Chengxin Li ◽  
Xianqing Yin
Keyword(s):  
Laser Cladding ◽  
Inner Surface ◽  
Surface Laser

Microstructure and Properties of Surface Laser Cladding Ni-Base Alloy on 40Cr

Applied laser ◽  
2011 ◽  
Vol 31 (5) ◽  
pp. 396-399
Author(s):  
李养良 Li Yangliang ◽  
王洪涛 Wang Hongtao ◽  
王利 Wang Li ◽  
甘春飞 Gan Chunfei
Keyword(s):  
Laser Cladding ◽  
Base Alloy ◽  
Microstructure And Properties ◽  
Surface Laser

Effect of Al on Microstructure and Wear-Resisting Property of Titanium Alloy Surface Laser Cladding

Applied laser ◽  
2011 ◽  
Vol 31 (4) ◽  
pp. 313-316
Author(s):  
崔爱永 Cui Aiyong ◽  
胡芳友 Hu Fangyou ◽  
赵培仲 Zhao Peizhong ◽  
卢长亮 Lu Changliang ◽  
胡滨 Hu Bin ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Laser Cladding ◽  
Alloy Surface ◽  
Surface Laser

scholarly journals Increasing corrosion resistance of carbon steels by surface laser cladding

2016 ◽  
Vol 130 ◽  
pp. 012011
Author(s):  
V I Polsky ◽  
V L Yakushin ◽  
P S Dzhumaev ◽  
V N Petrovsky ◽  
D V Safonov
Keyword(s):  
Corrosion Resistance ◽  
Laser Cladding ◽  
Carbon Steels ◽  
Surface Laser

scholarly journals Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 947 ◽  
Author(s):  
Guofu Lian ◽  
Yang Zhang ◽  
Hao Zhang ◽  
Xu Huang ◽  
Changrong Chen ◽  
...  
Keyword(s):  
Dilution Rate ◽  
Laser Cladding ◽  
Laser Power ◽  
Gas Flow ◽  
Scanning Speed ◽  
Industrial Applications ◽  
Curved Surface ◽  
Geometric Characteristics ◽  
Surface Laser ◽  
The Difference

Laser cladding on curved surfaces is essential in industrial applications for restoration and remanufacturing of high-value parts. This study investigated the influence of different factors on clad width, clad height, and dilution rate in curved surface laser cladding with curved path. Mathematical models were developed using central composite designs to predict these geometric characteristics by controlling laser power, scanning speed, gas flow, and altering the outside radius of the cylindrical substrate. Analysis of variance and response surface methodology indicated that clad width increased with increasing laser power and reducing scanning speed. Clad height positively correlated to laser power and negatively correlated to the outside radius of the cylindrical substrate. Increasing the laser power while decreasing the scanning speed led to an increase in dilution rate. Afterwards, the geometric characteristics of the clad were improved by optimizing these factors with the target to maximize clad width and height as well as to minimize dilution rate. The difference between model predictions and experimental validations for clad width, clad height, and dilution rate were 3.485%, 3.863%, and 6.566%, respectively. The predicted accuracy was verified with these models, and they were able to provide theoretical guidance to predict and control the geometric characteristics of curved surface laser cladding with a curved path.

Experimental Study on Surface Laser Cladding Based on Spot Control Technology

2020 ◽  
Vol 57 (17) ◽  
pp. 171404
Author(s):  
崔权维 Cui Quanwei ◽  
孙文磊 Sun Wenlei ◽  
黄勇 Huang Yong ◽  
黄海博 Huang Haibo
Keyword(s):  
Experimental Study ◽  
Laser Cladding ◽  
Control Technology ◽  
Surface Laser

A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

1971 ◽  
Vol 29 ◽  
pp. 358-359
Author(s):  
B. J. Panessa ◽  
J. F. Gennaro
Keyword(s):  
Methylene Blue ◽  
Toluidine Blue ◽  
Outer Surface ◽  
Microscope Study ◽  
Light Microscope ◽  
Carnivorous Plant ◽  
Sarracenia Purpurea ◽  
Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

Gastric Ulcers Produced by Cisplatin

1981 ◽  
Vol 39 ◽  
pp. 582-583
Author(s):  
S.K. Aggarwal ◽  
J. San Antonio
Keyword(s):  
Electron Microscopy ◽  
Single Dose ◽  
Side Effects ◽  
Antitumor Agent ◽  
Gastric Ulcers ◽  
Enzyme Cytochemistry ◽  
Intestinal Toxicity ◽  
Ovarian Cancers ◽  
Inner Surface

Cisplatin (cis-dichlorodiammineplatinum(II)) a potent antitumor agent is now available for the treatment of testicular and ovarian cancers. It is however, not free from its serious side effects including nephrotoxicity, gastro intestinal toxicity, myelosuppression, and ototoxicity. Here we now report that the drug produces peculiar bloating of the stomach in rats and induces acute ulceration.Wistar-derived rats weighing 200-250 g were administered cisplatin(9 mg/kg) ip as a single dose in 0.15 M NaCl. After 3 days the animals were sacrificed by decapitation. The stomachs were removed, the contents analyzed for pepsin and acidity. The inner surface was examined with a dissecting microscope after a moderate stretching for ulcers. Affected areas were fixed and processed for routine electron microscopy and enzyme cytochemistry.The drug treated animals kept on food and water consistently showed bloating and lesions (Fig. 1) with a frequency of 6-70 ulcers in the rumen section of the stomachs.

Probabilistic evaluation of detection capability of eddy current testing to inspect pitting on a stainless steel clad using multiple signal features

2020 ◽  
Vol 64 (1-4) ◽  
pp. 47-55
Author(s):  
Takuma Tomizawa ◽  
Haicheng Song ◽  
Noritaka Yusa
Keyword(s):  
Stainless Steel ◽  
Eddy Current ◽  
Pressure Vessels ◽  
Eddy Current Testing ◽  
Probability Of Detection ◽  
Current Testing ◽  
Multiple Signal ◽  
Signal Features ◽  
Inner Surface ◽  
Drill Holes

This study proposes a probability of detection (POD) model to quantitatively evaluate the capability of eddy current testing to detect flaws on the inner surface of pressure vessels cladded by stainless steel and in the presence of high noise level. Welded plate samples with drill holes were prepared to simulate corrosion that typically appears on the inner surface of large-scale pressure vessels. The signals generated by the drill holes and the noise caused by the weld were examined using eddy current testing. A hit/miss-based POD model with multiple flaw parameters and multiple signal features was proposed to analyze the measured signals. It is shown that the proposed model is able to more reasonably characterize the detectability of eddy current signals compared to conventional models that consider a single signal feature.

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