8results about How to "Avoid early failure" patented technology

This application relates to a method for preparing high-purity iron, comprising the following steps: forming an electrode rod from pure iron raw material; subjecting the electrode rod to vacuum arc melting; the vacuum arc melting includes an arc initiation stage, a melting stage, and a feeding stage; the melting current in the arc initiation stage is 1.5 kA~3.0 kA, and the arc stabilization current is 4 A~10 A; the melting current in the melting stage is 2.5 kA~3.5 kA, the melting rate is 2.5 cm / min~5.5 cm / min, and the arc stabilization current is 8 A~20 A; the melting current in the feeding stage is 1.2 kA~3.3 kA, the melting rate is 1 cm / min~4.5 cm / min, and the arc stabilization current is 4 A~11 A. This method can effectively reduce the density and refine the size of inclusions in pure iron, while also making the inclusions dispersed in the material. The high-purity iron prepared by this method has a significantly reduced inclusion density, small inclusion size, and is in a dispersed state, which meets the manufacturing requirements of iron-based supports.

This invention discloses a self-healing, anti-corrosion, and cooling coating and its preparation method. The preparation method includes: TiO2 surface activation treatment; in-situ construction of a mesoporous silica shell and loading of a corrosion inhibitor; surface silane modification; and coating and curing after blending the obtained filler with resin and curing agent. The coating consists of a polymer resin matrix and a multifunctional core-shell nanocomposite material uniformly dispersed therein; the composite material has a three-level structure of core-shell-interface layer: titanium dioxide as the core, mesoporous silica loaded with corrosion inhibitor as the functional shell, and a silane coupling agent as the interfacial compatibility layer. Through multi-level structural design, this invention enables a single filler to simultaneously achieve high solar reflectance, high infrared emission, and intelligent release of corrosion inhibitors. The coating combines a physical barrier, active corrosion prevention, and radiation cooling triple protection mechanism, and can be widely used for long-term protection of outdoor metal or non-metal substrates.

This invention belongs to the field of polymer materials technology, specifically relating to a tear-resistant polyethylene release liner, its preparation method, and its application. The tear-resistant polyethylene release liner comprises the following raw materials in parts by weight: 20-28 parts low-density polyethylene, 18-20 parts high-density polyethylene, 15-22 parts ultra-low-density polyethylene, 3-8 parts polyolefin elastomer, 8-15 parts ethylene copolymer, 2-4 parts maleic anhydride-grafted polyethylene, 12-18 parts linear low-density polyethylene, 0.5-1.0 parts plasticizer, 0.4-0.7 parts oleamide, and 1.5-3.0 parts modified nano-silica. The release liner of this invention simultaneously possesses high tensile strength, high elongation at break, and high right-angle tear strength, and can be reused more than 20 times.

The invention relates to the technical field of electronic control devices, in particular to a contact part and a relay. The contact part is provided with at least two parallel branches which are arranged in the same current path in parallel, each parallel branch is provided with a contact group, and each contact group comprises a movable contact and a static contact; at least two of the parallel branches form an alternating group; in the alternating groups, the movable contact and / or the static contact of each contact group comprises at least two electric contact layers, and each electric contact layer is arranged along the height direction of the corresponding movable contact or static contact.

The application discloses a kind of mechanical processing parameter self-adaptive tuning method and system, it is related to numerical control processing technical field.The method is by obtaining the initial cutting parameter and tool parameter of process planning system, and is combined with the processing signal of real-time acquisition of machine tool, realizes the dynamic perception to processing process.Using the prediction output working condition result of fusion physical model and data-driven model, while generating working condition index through machine learning model processing real-time signal, after the combination of the two, input optimization method based on probability modeling, obtain and screen the candidate parameter combination satisfying constraint condition.During processing execution stage, introduce dynamic threshold monitoring, when detecting abnormality, can real-time correction or back parameter.The execution result and processing data are fed back to process planning system.The application can realize parameter self-adaptive tuning, improve prediction accuracy and processing stability, prolong tool life, reduce risk, and have sustained optimization capacity, suitable for intelligent manufacturing under complex working condition.

The present application relates to a kind of aluminum electrolytic capacitor safety pressure relief film patch structure, including aluminum electrolytic capacitor body, the aluminum electrolytic capacitor body has a pressure relief hole, the periphery of the pressure relief hole is sealed with safety pressure relief film patch by high-temperature adhesive adhesive.

The invention provides a vibration reduction assembly which comprises a shell, a dot matrix support and a plurality of composite balls, the shell comprises an inner cavity, the dot matrix support is fixed in the inner cavity and comprises a plurality of unit cell units, a hollow area comprises a gap between the dot matrix support and the shell and internal pores of the dot matrix support, and the hollow area is filled with the composite balls. Comprising a vibration reduction shell and an energy dissipation core. According to the vibration reduction assembly, the dot matrix support is fixed in the inner cavity of the shell, the hollow area is filled with the multiple composite balls, a hydraulic vibration damper does not need to be adopted, and therefore the vibration reduction assembly does not depend on a liquid medium, and the liquid leakage risk is avoided. Besides, the composite ball is arranged in the shell and is not in direct contact with an external vibration source in the working process, and the vibration reduction shell generates elastic deformation instead of bearing continuous high-pressure load when colliding with other composite balls or dot matrix supports, so that permanent deformation or failure caused by long-term compression is avoided.

The invention discloses a surface composite treatment method for prolonging the service life of a lithium battery slitting knife and application of the surface composite treatment method. The surface composite treatment method comprises the following steps: carrying out precise cleaning treatment on the surface of the lithium battery slitting knife, wherein an adopted cleaning agent is an alkaline compound system containing hydroxide, carbonate, silicate, a nonionic surfactant and a complexing agent; performing plasma etching activation on the lithium battery slitting knife subjected to the precise cleaning treatment; a magnetic filter cathode vacuum arc technology is adopted, and a diamond-like carbon coating with the spbond content higher than 70% and the hardness larger than or equal to 5000 Hv is deposited on the surface of the lithium battery slitting knife subjected to plasma etching activation. According to the surface composite treatment method provided by the invention, the problem of binding force between the coating and the matrix is effectively solved, the slitting knife is endowed with extremely high wear resistance and adhesion resistance, the surface performance of the lithium battery slitting knife is greatly improved, the comprehensive performance of the matrix is further effectively improved, and the service life of the matrix is effectively prolonged.