Company News-15-Hypersolid Metal Tech Co.,Ltd

Home > Company News

Charpy impact properties of modified tungsten materials
The ductile-brittle transfer temperature (DBTT) of modified tungsten materials can be evaluated by several test methods, such as tensile test, bending test, Charpy impact test, and fracture toughness test.The DBTT depends greatly on the test method, strain rate, and specimen shape. Among them, some researchers use Charpy impact and tensile tests to evaluate DBTT. The Charpy impact test is performed according to EU standards using KLST Charpy V-notched specimens in the L-S (plate) and L-R (rod) directions in a vacuum at temperatures ranging from 200 to 1000°C (first letter (L): direction perpendicular to the expected crack plane, second letters (S and R): direction of expected crack growth). Annealing temperature dependence picture of grain size along the S direction for pure and modified tungsten materials Even though the modified tungsten materials have the same primary chemical composition, the DBTT and upper shelf energy (USE) vary with the materials, which have undergone different fabrication methods and histories (e.g., deformation rates). Most of the materials showed a mixture of brittle fracture and brittle and delamination fracture below DBTT and delamination fracture above DBTT. In contrast, the K-doped W rods showed ductile deformation with little or no cracking above 800 °C. The DBTT vs....
2023-07-17 Learn More
20230518 Tungsten & Molybdenum Market Quotes
May 18, 2023 Tungsten Market Situation The tungsten price is stable for the time being, market participants are cautiously watching the fundamental situation, although there are some shipments of cash sentiment at the raw material end, but the overall willingness to let the price is not high, the downstream users are cautious to receive goods on demand for the continuation of the state, there is no clear good news guidance at the demand side for the time being. Tungsten products prices basically maintain a weak and stable operation in the short term, market trading is cautious, the transaction negotiation more bargaining. Tungsten concentrate quotations remain at a high level of 121,000 yuan/ton, and the spot transaction status is stagnant. APT quotation is stagnant at 180,000 yuan/ton mark, the businessmen’s gaming mentality has no obvious fluctuation for the time being, generally follow the line to maintain stability, the downstream users are less willing to take orders at high levels, the market transaction performance is under pressure, caution to avoid the risk of inversion. Tungsten powder prices are stagnant at about 276 yuan / kg, the center of gravity of the bargaining trade is relatively loose, mainly by the industry chain upstream...
2023-06-26 Learn More
Understanding the characteristics and applications of molybdenum screws
As an important fastener, molybdenum screw is widely used in various fields. Understanding the characteristics and applications of molybdenum screws can not only help us choose and use it better, but also play an important role in industrial production and maintenance. In this article, we will introduce in detail the characteristics of molybdenum screws such as types, shapes and surface treatments, as well as their applications in various industries, and remind readers of the things they need to pay attention to when using molybdenum screws and ways to avoid common problems. Introducing molybdenum screws: 　　Molybdenum screws are made of molybdenum material and their types include metal molybdenum screws and ceramic molybdenum screws. Metal molybdenum screws have high strength and hardness, and are suitable for applications where they are subjected to large loads. Ceramic molybdenum screws have the advantages of good high temperature performance and corrosion resistance, and are suitable for high temperature, corrosion and other harsh environments. 　　Applications of molybdenum screws: 　　Molybdenum screws are widely used in various industries, including manufacturing electronic products, mechanical equipment, aerospace, etc. In the electronics industry, molybdenum screws are widely used to connect circuit boards and electronic components to improve circuit stability and safety. In...
2023-05-19 Learn More
Tungsten and molybdenum market on April 18, 2023
Tungsten Market Quotes on April 18, 2023 Tungsten prices ended the downward cycle and entered the upward phase, one is due to the main source of tungsten raw materials Jiangxi opened a new round of environmental protection inspectors, reminding the market supply and cost pressure; two is due to rising temperatures and thunderstorm weather in the south, increasing mining and supply resistance; three is due to the alloy end of the centralized replenishment order entry, boosting market demand performance; four is due to a new round of large tungsten enterprises long-order offer upward, incentivizing the industry to participate Confidence. It is worth noting that the current consumer market rebound signal is still unclear, in the external environment is still complex and unstable, the market risk appetite is low, demand release potential is inhibited, so the actual rebound cycle and magnitude of tungsten prices is still open to question, continue to pay attention to the market fundamentals adjustment, as well as external inflation, the dollar interest rate hike, local geopolitical conflicts and other kinds of risk factors changes. According to Chinatungsten Online, Xiamen Tungsten’s long-order purchase price for ammonium paratungstate in the second half of April 2023 was 175,000 yuan/ton, an...
2023-04-25 Learn More

‹141516 17 ›

Home Tel Mail Inquiry