In this paper, the profile of the bar is detected by laser vision technology. During the detection process, obvious isolated outliers can be observed in the profile data; dimension parameter and profile-fitting accuracy are seriously affected by these outliers. In order to eliminate these outliers and improve the measurement accuracy, this paper uses Hampel identifier and moving mean identifier to identify isolated outliers. At the same time, the profile data is fitted, and the fitting results and fitting accuracy were analyzed and compared between the original data and the renovated data. The experiment proves that the outliers in the data must be identified and processed in the data measurement process. The Hampel identifier has better recognition effect, its algorithm is simple, efficient, and robust, and it can play an important role in the preprocessing of profile data based on structured light.

Hydrate formation apparatus reported so far was mainly concentrated in stirred-tank batch environments. It was difficult to produce the high gas storage hydrate efficiently. Some nonstirred technology has been attracting more attention by researchers. This work proposed a new apparatus for hydrate formation by spraying water into a gaseous phase with a fine nozzle. It can get sufficient contact surface area for gas-liquid reaction. Methane hydrate formation experiments have been conducted using pure water and sodium dodecyl sulfate (SDS) aqueous solution for comparison at 277.15 K. The experiments were conducted at 7.0 and 6.0 MPa, respectively. Kinetics of methane hydrate formation have been investigated by methane consumption per mole of water and reaction rate. The mechanism of hydrate formation and kinetics property by spraying atomization were studied with the theory of crystal chemistry.

The effects of reaction condition on hydrate formation were conducted in spray reactor. The temperature, pressure, and gas volume of reaction on hydrate formation were measured in pure water and SDS solutions at different temperature and pressure with a high‐pressure experimental rig for hydrate formation. The experimental data and result reveal that additives could improve the hydrate formation rate and gas storage capacity. Temperature and pressure can restrict the hydrate formation. Lower temperature and higher pressure can promote hydrate formation, but they can increase production cost. So these factors should be considered synthetically. The investigation will promote the advance of gas storage technology in hydrates.

Three-dimensional model of bimetallic bush was established including the drive roller and the core roller. The model adopted the appropriate interface assumptions. Based on the bonding properties of bimetallic bush the hot rolling process was analyzed. The optimum reduction ratio of 28% is obtained by using the finite element simulation software MARC on the assumption of the bonding conditions. The stress-strain distribution of three dimensions was research assumptions to interface deformation of rolling. At the same time, based on the numerical simulation, the minimum reduction ratio 20% is obtained by using a double metal composite bush rolling new technology from the experiment research. The simulation error is not more than 8%.

In this paper, an investigation is reported on graphene platelet (GPL) –Cobalt (Co)-Nickel (Ni) coatings by electrochemical deposition. Graphene nanocomposites are a kind of high performance materials with excellent mechanical, magnetic, thermal, electrical, optical and biocompatibility properties. It has very important applications in electronic devices, batteries, compos-ite materials and photosensitive components. Electroplating graphene nanocomposites is a common process, but it is found that graphene deposited in the process of electrodeposition is less and easy to agglomerate. In order to solve this problem, this paper improves this situation by adding cobalt ions. By comparing the prepared composite materials with different cobalt co-ntents, it was found that the addition of cobalt ions promoted the deposition of graphene. Microstructures of the coatings are characterized using scanning electron microscope (SEM), electronic differential system (EDS), and X-ray diffraction (XRD). Magnetic properties were measured using a Vibrating Sample Magnetometer (VSM). The results show that with the increase of cobalt ion content in the plating solution, the weight percentage of cobalt in the composite increases gradually, and the de-position of GPLs on the surface of the material increases. GPLs and cobalt ions are uniformly deposited in the nickel matrix, and the average grain size of the nickel matrix is significantly reduced, the saturation magnetization (Ms) of the composite is improved, and the coercive force (Hc) and remanence (Mr) are gradually decreased. This study provides a new way to impro-ve the magnetic properties of the coating, and provides a reference for promoting the deposition of graphene.