{"id":1756,"date":"2024-06-05T02:54:51","date_gmt":"2024-06-05T02:54:51","guid":{"rendered":"https:\/\/hanmetallurgy.com\/?post_type=product&p=1756"},"modified":"2024-06-05T02:54:51","modified_gmt":"2024-06-05T02:54:51","slug":"introduction-to-vd-vod","status":"publish","type":"product","link":"https:\/\/luzixinzuonew.han-light.com\/index.php\/product\/introduction-to-vd-vod\/","title":{"rendered":"Introduction to VD\/VOD"},"content":{"rendered":"

VD-type vacuum ladle refining furnace has vacuum degassing capability. VOD-type vacuum ladle refining furnace has the functions of decarbonization, deoxygenation, and dehydrogenation. It can produce a variety of stainless steel or ultra-low carbon alloy steel.\u00a0\u00a0In order to increase productivity.VD system can also be designed as a multi-vessel system.<\/p>\n

\"40
40 ton VD\/VOD refining furnace<\/figcaption><\/figure>\n

The main benefits of\u00a0 VD\/VOD<\/b><\/strong><\/p>\n

1\u3001Enhanced Reaction Velocity in Vacuum.<\/p>\n

2\u3001Improved steel cleanliness.<\/p>\n

3\u3001Achieving low contents of carbon\/oxygen\/hydrogen\/nitrogen and sulfur.<\/p>\n

4\u3001Cost-Effective Investment.<\/p>\n

5\u3001Economical in Operating\u00a0Costs.<\/p>\n

VACUUM TREATMENT<\/strong>
\nInvestment in steel vacuum degassing processes, both in new plants and upgrades of existing plants are continuing as steel companies see the opportunity to increase the value of their products by improving their quality and supplying more special steels.
\nFor reasons of economy, these processes are usually conducted on large quantities of molten steel in very large plants, and consequently, very large vacuum pumping capacities are usually required. These processes are potentially very dirty with large amounts of metallic fines and oxide dust being generated.<\/p>\n

EFFECTIVE VACUUM SYSTEM DESIGN<\/strong>
\nHigh-performance vacuum pumps are the heart of secondary metallurgical vacuum processes. Our vacuum pump technologies are tuned to your specific steel conditions and to your individual plant and production requirements.
\nOur vacuum pump systems precisely control the rate of pressure reduction from atmospheric level to low vacuum pressure. During the various treatment steps, the vacuum level is accurately controlled to match the system’s metallurgical needs.
\nTo achieve optimal outcomes, our design incorporates essential elements such as high suction capacity, and low energy consumption, and optimal reliability.<\/p>\n

VACUUM PUMP INTEGRATION<\/strong>
\nFor VD, the necessary level of vacuum can be generated by conventional steam ejector pumps with steam ejectors installed alone or in combination with liquid-ring pumps allowing to save about 20% of steam consumption.
\nRecently, mechanical pumps are configured as a combination with liquid-ring pumps or screw compressors, regarded as dry mechanical pumps and Roots blowers have turned out to be an alternative. Of all advanced innovations, we have a proven record of success in many applications.<\/p>\n

\"Vacuum
Vacuum pump system<\/figcaption><\/figure>\n

1. STEAM EJECTOR SYSTEM
\nIn the manufacture of high-quality steel, the raw steel is treated under a vacuum. Multi-stage jet vacuum pumps are used to create and maintain
\nthevacuum.<\/p>\n

The pumps used in the steel degassing process have the following principal duties to perform:
\nRapid evacuation of the process tank to the required pressure.
\nMaintenance of vacuum while at the same time pumping outa large flow of inert gas
\nImmediate availability
\nResistanttodust
\nOperationally safe even under the roughest conditions Steam ejector vacuum pumps are concentrated on the larger melt sizes mainly in integrated steel plants because of theiravailability of steam.
\n2. STEAM EJECTORS WITH LIQUID-RING PUMPS
\nSteam ejector systems have made progress regarding steam
\nconsumption (save 20% approx.)by combination with liquid ring vacuum
\npumps as primary stage. In many cases, this combination is advantageous
\nfrom an economic point of view.<\/p>\n

Steam ejector pumps are mass conveyors and their suction capacity definition is done based on mass flow rates.
\nMechanical pumps are pure volume conveyors, therefore the correct way of their suction capacity definition should be referred to the volume flow rates.<\/p>\n

 <\/p>\n

\"MECHANICAL
MECHANICAL PUMPS WITH LIQUID-RING PUMPS<\/figcaption><\/figure>\n

Liquid ring pumps are a very economical and reliable way to generate fast roughing and high-capacity backing for large sets of\u00a0Rootsblower.
\nThey are simple pumps for hogging and higher pressure processes (e.g.VOD) and have been a standard alternative for steam ejectors in these duties for many years.
\nThey are inherently quite tolerant of process dust and dirts since these are largely absorbed and flushed out with the seal\u00a0water.<\/p>\n

\"DRY
DRY MECHANICAL PUMPS<\/figcaption><\/figure>\n

The dry mechanical pumps system, commonly have 3 or 4 stages using dry screw primary pumps, exhausting to the atmosphere and Roots pumps for the high-volume flow units.
\nThe proven advantages of dry mechanical pump systems are mainly lower operational costs and push-button availability. Mechanical pump systems runs with minimum cooling water requirement and low energy consumption are also very attractive.<\/p>\n","protected":false},"excerpt":{"rendered":"[caption id=\"attachment_1759\" align=\"alignnone\" width=\"300\"]\"40 40-ton VD\/VOD refining furnace[\/caption]\n

VD-type vacuum ladle refining furnace has vacuum degassing capability. VOD-type vacuum ladle refining furnace has the functions of decarbonization, deoxygenation, and dehydrogenation. It can produce a variety of stainless steel or ultra-low carbon alloy steel.\u00a0\u00a0In order to increase productivity.VD system can also be designed as a multi-vessel system.<\/p>\n","protected":false},"featured_media":1755,"template":"","meta":[],"product_brand":[],"product_cat":[986],"product_tag":[824,825,826,827,828,829,830,831],"class_list":["post-1756","product","type-product","status-publish","has-post-thumbnail","product_cat-vd-vod","product_tag-lance","product_tag-lf","product_tag-lf-furnace","product_tag-lf-furnace-roof","product_tag-lf-ladle-refining-furnace","product_tag-lifting-tool","product_tag-lining","product_tag-low-carbon","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/product\/1756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/media\/1755"}],"wp:attachment":[{"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/media?parent=1756"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=1756"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=1756"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/luzixinzuonew.han-light.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=1756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}