39results about How to "Fully plastic deformation" patented technology

The invention discloses a metal-based diamond laser composite coating and a preparation method thereof. The preparation method comprises the following steps: firstly selecting high-hardness metal powder and diamond powder with proper grain size and shape, uniformly mixing the high-hardness metal powder and the diamond powder by using a ball-milling method, and finally preparing the composite coating on a matrix by using a method of synchronously compounding a laser texturing technology, a laser heat treatment technology and a cold spraying technology. The thickness of the composite coating is over 1mm, and the diamond volume content in the coating is more than 45%. The preparation of the composite coating by using the high-hardness metal powder as the diamond binding phase is realized, and the binding strength of the composite coating and the matrix is improved through the pulse texturing treatment, and finally the stable and high-quality high-hardness metal-based / diamond composite high wear-resisting coating is prepared, and the integration, the automation and the efficiency of the matrix surface treatment and the coating deposition treatment are realized.

The invention relates to a molding method of a scroll of a scroll compressor, and a scroll processed by the method. The scroll consists of a vortex-type line and a vortex end cap. The method comprises the following steps: 1. molding the vortex-type line according to the structure parameters of the vortex-type line; 2. molding the vortex end cap according to the structure parameters of the vortex end cap; and 3. fixedly installing the vortex-type line and the vortex end cap in a matching mode to obtain the scroll. Due to that the vortex-type line and the vortex end cap are processed respectively as two parts in the invention, and the two parts are finally installed to form the scroll in a matching mode, the processing technique is simple, the production efficiency is high, and the size accuracy can be ensured.

The invention relates to a centrifugal casting duplex-metal composite ring part hot extend-rolling forming technology, and belongs to the technical field of ring part rolling expansion machining. The centrifugal casting duplex-metal composite ring part hot extend-rolling forming technology is characterized by comprising the following steps: (1) isothermal heating is carried out; (2) a heated duplex-metal composite ring blank is placed on a radial and axial direction ring rolling machine; (3) the contact relation between a forming roller and the ring blank is determined; (4) a driving roller drives the duplex-metal composite ring blank and a core roller to perform rotation motion, meanwhile, the core roller does straight line feeding motion in the radial direction of the ring blank, an end face taper roller only keeps the rotary motion rather than conducting axial feeding, and continuous local plastic deformation of wall thickness reduction, diameter enlarging and cross section layout shaping is continuously carried out on the duplex-metal composite ring blank; and (5) when a preset value of the outer diameter of a duplex-metal composite ring part is obtained, a guide roller gives out a signal, the core roller stops feeding, and extend-rolling is finished. The centrifugal casting duplex-metal composite ring part hot extend-rolling forming technology has the beneficial effects that the process procedure is shortened, the device investment is reduced, and energy and materials are saved; and meanwhile, the composite ring part interface plastic deformation is sufficient, the bonding strength is high, the mechanical property is good, and the service life is long.

The invention discloses a warm-hot forming device and method for a metal and carbon fiber prepreg composite material component in the field of lightweight composite material forming and processing. An outer blank holder is arranged between a female mold and a male mold. The middle of the outer blank holder is provided with a downwards concave step positioning groove. The top of the step positioning groove can contain a steel plate, and an inner blank holder is placed at the bottom of the step positioning groove. The upper surface of the inner blank holder can contain a carbon fiber prepreg blank. A pushing plate is arranged under the male mold. The top ends of a first outer blank holder pushing rod and a second outer blank holder pushing rod can upwards jack the outer blank holder, and the bottom ends of the first outer blank holder pushing rod and the second outer blank holder pushing rod are fixedly connected to the pushing plate. The top ends of a first inner blank holder pushing rod and a second inner blank holder pushing rod can upwards jack the inner blank holder, and the bottom ends of the first inner blank holder pushing rod and the second inner blank holder pushing rod are each connected with a hydraulic cylinder. A third hydraulic cylinder is connected under the pushing plate. Large adjustable constraint resistance is applied to the steel plate. By means of the adjustable constraint resistance with a small effect on the carbon fiber prepreg blank, two heterogeneous component materials have the mutual matching forming capacities, and warm forming and hot forming are completed in a one-time stamping stroke.

The invention discloses a process and a device for preparing a stainless steel corrugated plate of a heat exchanger through continuous rolling of a special hole roll. The technological process comprises the following steps: uncoiling by using an uncoiling machine; guiding by using a guide clamp feeding roll; automatically sensing temperature and heating by a heating furnace; straightening the plate by a straightening unit; guiding by using the guide clamp feeding roll; performing continuous roll forming by using the special hole roll; cutting to length by using a V-shaped shear blade fly shear; collecting dropped materials, wherein the plate is subjected to continuous roll forming during engagement of a forming roll. Based on a continuum forming principle, the influence between adjacent ripples is considered, and a rebound angle model in a continuum rolling process is established. During design of the forming roll, the continuum rebound angle model and an optimal design principle are combined, and a roll tooth parameter design model suitable for preparing the corrugated plates of different design parameters is established. According to the continuous roll forming device for preparing the stainless steel plate corrugated structure, a smaller plate and strip strain rate can be kept, the crack defect caused by a stamping process can be avoided, the life of a machining mold can be prolonged and the machining efficiency can be improved.