After tempering at 200℃ (at least 4 hours), the hardness can reach more than 48HRC, which has better polishability and better corrosion resistance. C Carbon Si Silicon Cr Chromium Mn Manganese Mo Moly...
The immersion nozzle is to lengthen the tundish nozzle and insert it to a certain depth below the molten steel surface of the mold, which seals the pouring flow. The advantage of using the immersion n...
1. Overview of polybutene (PB) pipelines: In recent years, the amount of cold and hot water plastic pipelines used in buildings in China has soared. By 2007, the total amount had reached 400,000 tons....
Defect characteristics of oxidized slag inclusion: most of the oxidized slag inclusion is distributed on the upper surface of the casting, at the corners of the mold where no gas flow. The fractures a...
The drainage system is one of the important facilities for the normal use of other engineering facilities in its service area, and it is very important to ensure the quality of its construction. Based...
Nowadays, as the advantages of slow-moving wire over fast-moving wire are gradually discovered and recognized, slow-moving wire cutting machines are widely used when processing high-precision parts. W...
There are non-metallic inclusions in the steel. It will destroy the continuity and compactness of the steel, which is very harmful to the performance of the steel. In order to improve the quality of s...
Material name: Alloy tool steel Brand: 4Cr5MoSiV standard: GB/T 1299-1985 4Cr5MoSiV steel is air quench hardening hot work die steel, which is the H11 steel imported from the United States. Its perf...
eported It is a new beginning in the field of American education. The main purpose of Pump Systems Matter (PSM) is to reduce the energy demand in the northern United States and increase the bottom li...
Abstract: This article first introduces the concept and working principle of water source heat pump technology, and compares it with boilers and air source heat pumps in terms of energy utilization, a...
%: C: 2.03 Si: 4.0 Mn: 7.0 Cr: 6.5 Mo: 10.5 V: 6.5 Good grinding performance Good heat treatment dimensional stability good toughness Very good red hardness Very good wear resistance ASP60 steel is...
In the first quarter of this year, the State Administration of Quality Supervision, Inspection and Quarantine deployed and the National Plastic Products Quality Supervision and Inspection Center (Beij...
Some of the cross-sectional shapes of steel are symmetrical, such as I-beams, and some are asymmetrical, such as steel rails and channel steel. Generally, the symmetrical section steel is not easy to ...
Foreword In the water supply project, the modern water treatment plant takes water from the water source, settles and filters it into the clean pool, and then pumps it to the urban pipe network to rea...
C Carbon Cr Chromium W Tungsten Mn Manganese Si Silicon V Vanadium 0.95 0.5 0.5 1.1 0.3 0.1 M238 factory specifications: hardened and tempered to 980-1080N/mm² (30-34HRC). M238 steel charact...
1 Introduction When the contact mechanical seal is in operation, the contact surface of the moving ring and the static ring should be friction and heat. For high PV value systems, the friction heat wi...
Abstract: This article focuses on analyzing the technical obstacles of the cooling tower water source heat pump air conditioning system, and through engineering examples, demonstrates the feasibility ...
On the afternoon of the 28th, the editor’s circle of friends was full of the performance of the latest subject evaluation released by major universities. So, who is happy and who is worri...
In the entire steelmaking process, the position of the oxygen lance is a very important parameter, which is directly related to the occurrence of decarburization, slagging, heating and splashing in th...
Design of special steel forge shop (design of special steel forge shop) The use of forging equipment is used to plan billeting or finished products for special steel ingots. The forging steel workshop...
The outflow direction of the sideway extrusion product is 90 with the direction of movement of the extrusion rod. The extrusion method is also called horizontal extrusion. It can be divided into one-w...
1 The composition and classification of the regulating valve The regulating valve, also known as the control valve, is the main type of actuator. By receiving the control signal output by the regulati...
In October, the overall market news was relatively calm, and the trading sentiment in the rebar futures market weakened. Since the completion of the month swap from the 1301 rebar contract to the 1305...
0 Introduction In the application of superalloys, welding is an important manufacturing process, and welding quality plays a decisive role in the entire welding structure. The high-temperature alloy w...
National standard for high-density polyethylene (HDPE) pipes for water supply National Standard of the People’s Republic of China GB/T 13663-92 High-density polyethylene (HDPE) pipes for water supply ...
Patent No.: 98120044.3 Patentee: Baoshan Iron and Steel (Group) Company Technical Abstract: The present invention relates to an ultra-low cement castable for the furnace mouth of a mixed iron car, whi...
As of the end of March Aluminum Strip Company has produced more than 1,000 tons of various alloy medium and heavy plates, exceeding 150 tons of medium and heavy plates last year. Since this year, the ...
Some investors asked Hesheng (002824), do you have any battery trays supplied to Tesla? The company replied, hello! Our company and Tesla do not directly trade new energy auto parts. Thank you for you...
Romania imported 2018 tons of aluminum bars and profiles during 2020-103,391, with an import value of US$3.608 million. In 2018, Romania imported 22,652 metric tons of aluminum rods and aluminum profi...
On August 8, the company held its August monthly work meeting in the conference room on the fifth floor of the administration building.Xie Xiaoyang, member of the company’s party committee and a...
On August 8, the Information Office of the Provincial Government held the fourth press conference of Henan Province to speed up post-disaster reconstruction. Disaster-affected enterprises postpone pay...
On the morning of September 1, the groundbreaking ceremony of Yunnan Suotongyun Aluminum Carbon Materials Co., Ltd. 900kt/a high current density energy-saving carbon materials and waste heat power gen...
Date Shanghai Spot Guangdong South Reserve 08 06 . 155 08 05 40 110 08 04 . 85 08 03 . 70 08 02 . 65 07 30 . 60 07 29 . 80 07 28 . 80 07 27 . 80 07 26 . 90 07 23 . 80 07 22 . 60 07 ... ...
Product name Description Today’s price Yesterday’s price Ups and downs Date ADC12 Tax included 23300 23200 100 2021-09-22 AlSi9Cu3 Tax included 23600 23500 100 2021-09-22 A380 Ta...
On August 20th, Wang Jiangping, a member of the Party Leadership Group and Vice Minister of the Ministry of Industry and Information Technology, presided over a discussion meeting on the key recommend...
An investor asked Nanshan Aluminum (600219) what is the company’s view on the development of the aviation board in the future? The company replied, hello, as an important product in the field of...