67results about How to "Reliable quality assurance" patented technology

The invention provides a high flow regime low temperature early-strength cement based grouting material comprising the following components by mass: 100 parts of sand, 60 to 70 parts of cement, 20 to 30 parts of a mineral admixture, 0.3 to 0.7 part of a water reducing agent, 1 to 3 parts of an expansive agent, 0.03 to 0.06 part of a water retaining agent, 0.1 to 0.3 parts of dispersible latex powder, 0.1 to 0.3 parts of a defoaming agent, 0.01 to 0.05 part of an early strength agent, 0.2 to 0.5 part of a retarder, and 0 to 0.2 part of high polymer synthetic fiber. The grouting material applied in low temperature construction conditions only needs routine maintenance and is in no need of auxiliary heat to reach the designed strength, not only saves the cost in manpower and material resources brought by winter construction measures, and but also provides more reliable quality guarantee for engineering construction. The grouting material initial fluidity is greater than or equal to 340mm in a construction environment at the temperature of 5 DEG C, the fluidity in 0.5h is loss-free, the fluidity in 1h is greater than or equal to 300mm, the grouting material is long in construction time; in 5 DEG C routine maintenance condition, the 1d compressive strength is more than or equal to 30MPa, and the 28d compressive strength is more than or equal to 70MPa. When the environmental temperature is dropped to minus temperature, the 1d compressive strength is decreased, and the final strength development is not affected.

The invention relates to a heat treatment process, which is a heat treatment process for a gear sleeve of an automobile gearbox synchronizer, comprising steps: carbonitriding, press quenching, cleaning, tempering, and testing. When the equipment fails, in the carbonitriding step, The carburizing temperature is 780-850°C, the carbon potential is 0.50-1.0%, the amount of nitrogen added is 5-12m3 / h, the amount of methanol added is 4-7L / h, the amount of propane added is 0.5-0.9m3 / h, ammonia The dosage is 0~30L / h. When a failure occurs, the invention can ensure that the surface hardness, hardened layer, and metallographic structure of the product still meet the technical requirements when the time of the part in the furnace is extended to 10 hours, avoiding the phenomenon of product scrapping caused by equipment failure, and greatly Significantly reduce product failure rate and scrap rate.

The invention provides an agricultural product safe supply chain anti-fake management and control system. The agricultural product safe supply chain anti-fake management and control system comprises an agricultural product quality tracing information management platform, an agricultural product production management and control system, a production material supply chain management and control subsystem, a product quality management and control subsystem, a product selling management and control subsystem and a communication network. The agricultural product quality tracing information management platform, the agricultural product production management and control system, the production material supply chain management and control subsystem, the product quality management and control subsystem and the product selling management and control subsystem are connected into the communication network. The agricultural product safe supply chain anti-fake management and control system takes the agricultural product quality tracing information management platform as the core, supports relevant equipment of other systems, receives, summarizes, analyzes and assesses information data of other subsystems, and build an agricultural product safe supply chain whole-process anti-fake management and control system. The agricultural product safe supply chain anti-fake management and control system forms effective supervision, control and supervision standardized production operation, and effectively ensures reality of information entry, thereby achieving safe supply of agricultural products.

The invention discloses a process method for casting a low-temperature ductile iron hub for a high-power wind driven generator in a way of no frozen iron and riser, the hub is cast by adopting a low-temperature erosion-resistant ductile iron casting, and furan resin-sand is taken as molding sand; the sand mold has no riser and frozen iron, microvibration is carried out after the completion of themolding for compaction, the pouring speed of the cast liquid entering a mold cavity is controlled between 0.3m / s and 0.8m / s, and the pouring time is controlled at 160-600s, a filter screen is adoptedto filter the cast liquid when casting the cast liquid. Mold parting and core parting of the sand mold place the heavy section which is the junction surface with a main shaft at the highest place of the upper box of the sand mold. The process method can cast the hub for the high-power wind driven generator without using frozen iron and riser, which greatly reduces labor intensity, improves process casting yield and production efficiency, reduces production cost and improves inherent quality and surface quality of castings.

The invention discloses an organic carbon powder explosive reducing agent, which is prepared from the following ingredients in parts by weight: 28 to 32 parts of terephthalic acid, 8 to 12 parts of ammonium benzoate, 8 to 12 parts of calcium benzoate, 38 to 42 parts of hydrogen potassium terephthalate and 8 to 12 parts of simple substance carbon. The reducing agent provided by the invention has the advantages of safety, stability and environment protection.

The invention discloses an asexual propagation method for nuclear male sterile line, restores line and common line in cotton by utilizing perennial root. The course of action is that: planting cottonof nuclear male sterile line, restores line and common line in the area that the cotton is capable of living through the winter for the first year and reserving the cotton plant to pass the winter naturally after harvested the seeds; then in the second year or each year later, the cotton plant with perennial root of the previous year gives off lateral bud and grows out new plantlet by the asexualpropagation. Harvesting seeds on the plantlet features asexual propagation to realize the asexual propagation for the parents of cotton nuclear coenospecies and cotton line under the conditions of perennial root of high purity strain, so as to maintain the reliability of netic gene and reduce the gene recombination and genovariation due to sexual multiplication; meanwhile, in cooperation with species pollinated by insects during propagating sterile line, the invention can both maintain the hereditary purity and lower the production cost.