With the increasing application of Roots pumps, equipment is often affected by harsh environments such as high temperature, high pressure, strong corrosion, cavitation erosion, etc., which often cause wear, corrosion, leakage, etc., which restricts the normal production of the enterprise. It even leads to serious safety accidents such as fire, explosion and pollution. At the same time, the unexpected shutdown of the Roots pump failure also affects the efficiency of production and the quality of the product, increasing the cost of the enterprise. Common faults of Roots pumps are mainly divided into the following two categories:
Roots pump shaft bearing wear wear parts wear is a common problem of Roots pump, and the number is large, frequent damage, including bearing position, bearing seat, bearing chamber, keyway and thread. The traditional welding machine processing method is easy to cause material damage, resulting in deformation or fracture of the parts, which has great limitations. Brush plating and spray re-machining methods often require external support, which not only has a long repair cycle, high cost, but also repairs. The material is still a metal material and cannot fundamentally solve the cause of wear.
The new method of contemporary Zui is to use polymer composite materials, which have superior adhesion, excellent compressive strength, wear resistance and corrosion resistance. The 2211F polymer composite repairing material can be dismantled and repaired on site without relatively large wear and tear in the transmission part, which avoids mechanical processing and heat stress without repair welding. The thickness of the repair is not limited, and the product has resistance. Abrasiveness and non-recessibility of metal materials ensure 100% contact and fit of repair parts, reduce shock and vibration of equipment, avoid the possibility of wear, and greatly extend the service life of equipment components (including bearings), saving a lot of business The downtime creates huge economic value.
Repair steps:
1, mold processing: production standard open mold 2, surface treatment: oil, polishing, cleaning, to ensure that the surface is clean, dry, strong.
3, blending materials: the proportion is accurate, even and even.
4, the application of materials: to ensure bonding, filling and thickness.
5. Install the mold: apply the release agent and fix it to ensure that the excess material is squeezed out.
6. Demoulding: After curing, remove the mold to clean the excess material, the material can not be knocked, and it can be removed by tools such as polishing machine and file to meet the installation requirements.
The shape of corrosion and erosion metal corrosion of Roots pump can be divided into two categories: comprehensive (uniform) corrosion and local corrosion. The former occurs more evenly on the entire surface of the device, and the latter only occurs locally. For example, pitting corrosion, crevice corrosion, intergranular corrosion, stress corrosion cracking, corrosion fatigue, hydrogen corrosion cracking, wear corrosion, delamination corrosion, and the like.
The use of MEGAHUA polymer composites to implement surface organic coating corrosion protection is one of the effective anti-corrosion measures. Surface adhesion protection is widely used in abrasion, cavitation, corrosion repair and pre-protection coatings. It has good chemical resistance and excellent mechanical properties and bonding properties. Compared with the traditional pressure vessel welding repair, it has the characteristics of simple construction, low cost, safe performance and good repair effect.
Repair steps:
1. Surface treatment: thoroughly remove the surface oxide layer and clean the surface with acetone.
2, blending materials: reconcile in strict proportion, and stir evenly until there is no color difference.
3, smear material: first apply a thin layer of material, to ensure bonding and complete coverage, and then evenly spread the material to the repair surface to achieve the required repair thickness.
4, curing: 24 hours / 24 ° C (material temperature), the material temperature is increased by 11 ° C, the curing time is reduced by half, but the lifting temperature must not exceed the material withstand temperature.
5, installation and precautions: according to the assembly requirements for installation, repair and protection of materials should be protected from external impact or impact, if the material affects the assembly, you can use the grinding method, do not knock, to avoid damage to other materials.
Esculin Powder is A bitter. Naringin dihydrochalcone obtained by hydrolysis and hydrogenation is a Sweetener, and its sweetness is about 150 times that of sucrose.
It has anti-inflammatory, antibacterial, anti hemagglutination, analgesic and other activities, and has significant diuretic effect on mice. It can inhibit the aldose reductase of rat lens, and it is the growth inhibitor of Bacillus subtilis. At the same time, it can also inhibit the chemical carcinogenesis. It can inhibit the increase of capillary permeability caused by histamine and has a weak analgesic effect. At the same time, it has antibacterial, anticoagulant and inhibition of aldose reductase in rat lens.
Product Name: Esculin Powder
Other Name: Horse Chestnut Extract
Part: Bark
Grade: Food & Medicine Grade
Appearance: White crystalline powder
Specification: 98%
Test Method: HPLC; UV
Esculin, also rendered Aesculin or Asculin, is a coumarin glucoside that naturally occurs in the horse chestnut (Aesculus hippocastanum), California buckeye (Aesculus californica), prickly box (Bursaria spinosa) and in daphnin (the dark green resin of Daphne mesereum). It's also found in dandelion coffee.
1. Anti-inflammation,Anti-cancer, Ease pain, Anti-arrhythmic, Anti-histaminic, Anti- cruor . Esculin is a glycoside composed of glucose and a dihydroxycoumarin compound ;
2. Esculin is a product of a coumarin derivative extracted from the bark of flowering ash (Fraxinus ornus;
3. Esculin is used in the manufacturing of pharmaceuticals with venotonic, capillary- strengthening and antiphlogistic action similar to that of Vitamin P.
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