In the production of hot rolled sheet, because the working roll contacts the rolling piece directly, bears certain high temperature, certain rolling pressure and transfers considerable rolling moment at the same time, its damage is quite serious in the rolling process compared with other parts of the rolling mill. The work roll is a large…
In order to improve the service life of work rolls, corresponding measures can be taken from the following aspects. The development of new roll material and improvement of manufacturing process are effective measures to prolong the life of roll, and the way to add new alloy elements is sought to improve the crack resistance and…
Practice has proved that improper material selection,backward manufacturing processes,and poor casting quality will directly affect the life of the work rolls. The working roll of 1200mm hot rolling mill is made of platinum-containing nickel-containing chilled ductile iron.the hardness of the roll surface is as high as that of the quenched layer,so as to meet the…
For the new Qin alloy material and Qin alloy sheet production process because of its high mechanical properties at high temperatures,high hardness,and the material is not easily deformable,it often cuases the work roll to be abnormally damaged. For different processing materials,unequal fire times,the process system strictly stipulates its operation method,but for the new Qin…
From October last year to March this year, the “Beijing-Tianjin-Hebei stop-up tide” is still vivid, and this year’s suspension order has come again! ! Recently, the state issued the “Action Plan for the Comprehensive Management of Air Pollution in the Autumn and Winter of 2019-2020 in Beijing, Tianjin and Hebei and the Surrounding Areas”, which…
Faced with the rising trend of imported raw materials,how will the game between buyers and sellers be deduced?what impact will the centralized release of new production capacity of domestic needle coke in the second half of the year have on the market? In terms of import and export,China’s total export of graphite electrodes in January-November…
1. In recent years,the state has resolutely banned the floor bar steel,resulting in a sharp drop in scrap steel prices,many new electric furnaces have been built in China,which has led to a large increase in the use of graphite electrodes.at the same time,under the pressure of environmental protection,many electrodes manufacturers that do not meet the…
The latest news shows that the price of imported Philip 66 needle coke increased generally in the first half of 2019, with the price of graphite electrode needle coke rising by 23.53% and that of negative material needle coke by 16.67%. From January to June 2019, the price of imported Philip 66 needle coke from…
With the environmental protection supervision and supply-side reform, the demand for needle coke for ultra-high power and high power graphite electrodes has been accelerated, and the demand for needle coke for artificial graphite anode of lithium-ion power battery has increased year by year in recent years, which has further boosted the demand for needle coke…
As we all know, needle coke is a high-quality raw material for producing high-power and ultra-high-power electrodes, anode materials and other high-end carbon products. Graphite electrodes made of needle coke have strong thermal shock resistance, high mechanical strength and oxidation resistance. Good, low electrode consumption and high allowable current density. Needle coke can be divided…
