34results about How to "There will be no scrapping" patented technology

The invention discloses special cast steel used for preparing a large hot-work die under the high temperature and heavy load conditions. The special cast steel is composed of, by mass, 0.35-0.5% of carbon elements, 0.2-0.6% of silicon elements, 0.6-1.0% of manganese element, less than or equal to 0.02% of phosphorus elements, less than or equal to 0.02% of sulfur elements, 1.4-1.7% of chromium elements, 1.4-1.7% of nickel elements, 0.15-0.3% of molybdenum elements and the balance iron and impurities. The novel cast steel used for preparing the large hot-work die is provided, when the large hot-work die is matched with an eighty-thousand-ton die-forging hydraulic press for forming materials difficult to form under the extreme conditions with the temperature being higher than 350 DEG C and the local transient stress being greater than 650 MPa, the properties of the aspects of hardness, strength, plasticity and toughness of the large hot-work die can meet the requirements, the problem that a die substrate is severely and plastically deformed and cracked when the strength and hardness of the hot-work die are reduced rapidly under the extreme conditions is avoided, and the problem that the die fails seriously and cannot not used is avoided; and thus the service life of the hot-work die is remarkably prolonged.

The invention discloses a roving frame draft gear applicable to high draft. The roving frame draft gear comprises a cradle. A front leather roller and a second leather roller are sequentially arranged on the lower side of the cradle via a leather roller clamp leg, a corresponding front roller is arranged below the front leather roller, a second roller is arranged below the second leather roller, a third leather apron and a rear leather apron are arranged at the rear of the second leather roller, an upper lather roller and an upper pin are respectively arranged in the third leather apron and the rear leather apron, and the upper leather roller is connected with the cradle by the leather apron clamp leg; a corresponding third roller leather apron is arranged below the third leather apron, a rear roller leather apron is correspondingly arranged below the rear leather apron, and lower pins and lower leather rollers are respectively arranged in the third roller leather apron and the rear roller leather apron; roller slide seats are respectively arranged below the rear roller leather apron and the third roller leather apron, rolling shafts are arranged in the roller slide seats, and the lower leather rollers are respectively connected with the rolling shafts. The roving framer draft gear has the advantages that the roving frame draft gear is simple in structure, stable and reliable in operation and high in roving production draft multiple, and the production cost can be lowered for enterprises.

The invention discloses a multi-channel control device and a mounting method thereof. The device comprises a control mainboard and a plurality of integrated channel modules, and the integrated channelmodules are mutually independent; the integrated channel module comprises a mounting plate and a transmission circuit integrated on the mounting plate to realize an I / O channel function; each mounting plate is detachably connected with the control mainboard, and the receiving end of each transmission circuit is inserted into each control end of the control mainboard in a one-to-one correspondencemanner. Compared with the prior art, a plurality of integrated channel modules are used as a plurality of channels to access the control mainboard; each channel is composed of a single module; each channel can work independently and does not influence each other, and thus, while multi-channel control of the original control device is realized, when one channel is abnormal, other channels can alsowork normally, and when one channel is irreversibly damaged, the channel can be directly replaced, the situation that the whole product is scrapped is avoided, and the reliability of the product is improved.

An electric connector with a rotatable interface comprises an interface part and a rotating mechanism, the interface part comprises an insulation body provided with a conductive terminal; and the rotating mechanism comprises a mechanism part with a rotating shaft provided with a circle of hobbing, an assembly groove which is arranged at the rear of the insulation body and used for assembling the rotating shaft of the mechanism part, and a pair of elastic parts which are arranged at the rear part of the insulation body and cooperatively rotates with the rotating shaft of the mechanism part to locate the shaft; wherein, the elastic parts consist of a carrier rod and a spring which abuts on the carrier rod, and the carrier rod props against tooth groove positions between the hobbing on two sides of the rotating shaft. Compared with the prior art, the electric connector with a rotatable interface is characterized in that the cooperation of the elastic parts formed by the combination of the carrier rod and the spring with the rotating shaft of the mechanism part to realize relative rotation of the interface part and the rotating mechanism, thus good elasticity of the elastic parts can be kept by the spring even in frequent use, influencing no service performance.