Recently, the large-scale automobile recall incident triggered by the failure of Japan's Takada airbags once again pushed the " airbag " to the cusp. In China, complaints about car airbags also have a long history. Due to the lack of uniform standards, since 2009, there have been countless incidents involving airbags, accident disputes and difficult consumer rights protection. In 2011, China's national standard for automotive airbags was formally established, but it has not yet been introduced. In April 2013, the Airbag Standard Research Working Group meeting was held at Shanghai Dongfang Jiule Automobile Airbag Co., Ltd. The meeting discussed and revised the national mandatory standards for “Miscellaneous action test methods and requirements for automotive airbag systemsâ€. Sun Zhendong, a senior engineer of the Automotive Standards Institute of China Automotive Technology and Research Center, who attended the conference, told the reporter: “The national standard for airbags has been basically formulated and completed. Now we mainly do some verification work. Our goal is to announce at the end of 2013.†The road to standards is long In fact, China has been studying the national standard for airbags. In April 2006, the State issued the recommended national standard for airbags, "Airbag Components for Road Vehicles" (GB/T 19949), which is divided into three parts, the first part of the terminology, the second part of the airbag module test, the third part Gas generator assembly test. This standard specifies the test methods, environmental test procedures and requirements for the airbag components of road vehicles and the terms used therein. However, it is only a standard for an airbag module and cannot be used as an evaluation standard for an airbag integrated system. In October 2009, the associations of Liaoning, Sichuan, Jiangsu and other provinces and cities lost their standards, resulting in the inability to determine the quality of airbags and the difficulty of protecting consumers' rights. This was addressed to the Ministry of Industry and Information Technology, AQSIQ, and the National Standardization Administration. Submission of the "Proposal on the Promulgation of National Standards for Automotive Airbags as soon as possible". Sun Shidong, a passive safety engineer from Shanghai Dongfang Jiule Automobile Airbag Co., Ltd., told reporters: “There was no standard for the accidental explosion of airbags. It will certainly need such standards afterwards. After standards have been established, when airbags are inadvertently inflated, they can be compared with national standards. Check whether the airbag is qualified to avoid unnecessary disputes. Hao Xiaosong of BYD Auto Sales Co., Ltd. believes that the introduction of standards can improve security and enable users to receive benefits and security. In 2009, the National Automotive Standardization Technical Committee initiated the research project on national standards for automotive airbags and submitted an application for the standard to the National Standardization Committee. In May 2011, the Automotive Airbag Standards Research Working Group was established and consists of 21 experts from 17 organizations. Airbag national standard formulation work officially started. Multinational corporations set resistance From 2006 to 2013, the eight-year war still came to an end. Why does the airbag national standard always “do not call outâ€? What problems exist in the formulation process that cannot be overcome? An expert involved in the development of airbag standards told reporters that the formulation of airbag national standards is mainly facing two obstacles: First, technology, and first, multinational companies. According to reports, although there are some standards related to airbags in foreign countries, there is no standard for the misuse of airbags. China has formulated standards for the misuse of airbags. Foreign and joint-venture car companies believe that they are setting trade barriers and have been blocking the introduction of airbags. Liu Yuguang, deputy chief engineer of the National Automobile Quality Supervision and Inspection Center Automobile Testing Research Institute, said: “More than one rule is a constraint for car companies, especially foreign companies, they will worry about unnecessary situations, and one more technical specification may be possible. Become a trade barrier." Some experts in the industry are also playing a counter part. For example, Zhu Xixi, a professor at Tongji University’s School of Automotive Studies, was skeptical of formulating airbag national standards when interviewed by reporters. He said: "What is the standard used? Is there a standard that can solve all kinds of disputes caused by the accidental explosion of airbags? Can a few simple standards solve the complex problems of airbags? Is it standard? Are cars that meet the standards not called defects?" According to the experts involved in the formulation of standards, “In order to resolve the resistance of multinational corporations and other parties, we invited the transnational corporations to participate in the process of standard setting and coordinate with the parties.†Technical problems are being solved Returning to the technical level, China's development of standards for the misuse of airbags is entirely based on China's actual road conditions and model applications, and it is technically difficult. Liu Yuguang stated: “When an airbag is detonated and when it should not be detonated, technically speaking, ordinary cars are not the same as SUVs and MPVs. It is necessary to bring these two together to form a unified standard. Technically, Difficulty, of course, is not totally unsolvable." Sun Shidong also believes: "The test conditions for airbags are very harsh, such as the roadbed. Its height is regulated, and therefore the technical requirements are very high." Although the development of airbags mishandling national standards was a difficult process, reporters learned that everyone has a positive attitude towards the introduction of the standard. Sun Zhendong said that the current standard has basically been completed and the follow-up work is mainly to carry out technical verification of the standard and obtain the approval of domestic and foreign companies, and strive to be introduced at the end of 2013.
1.Welding materials
In
Welding, substances called filler materials or consumables are used. As the
name implies, these substances provide filler or a body of molten materials
that provides a strong bond to be formed between the base metals used. Most
welding processes will also require some form of shielding to protect both the
main components and filler from being oxidized during the process.
The
type of welding materials used during welding depends on the nature of the job
intended. Electrodes draw the necessary energy in order to perform welding
applications. Luoyang Golden Egret Company has any kind of welding materials
include CTC Welding Rod /rope, SCTC welding rod/rope, TC electronic welding rod,
Ni-based welding rod, flux-cored Welding Wires, solid welding wires and etc.
Welding
can be applied in different kinds of industries such as building and
construction, oil and gas, marine, power generation, steel, mine tools,
automobile, transportation and etc.
2. Welding rod
1)Cast tungsten carbide based tubular
rod
The
hard phase of the rod is cast tungsten carbide which leads to higher hardness
and better wear-resistance.
Wear
resistance: the wear resistance is 6-7 times better than others. Tested by ASTM
G65
Mainly
used for Mining machinery, Geological tools, Petroleum drilling tools etc, by
Oxy-Acetylene with weak carburizing flame.
Product
recommendation:
GT1103
(CTC, 60-80 mesh),
GT1103-1(CTC, 20-30 um),
GT1103-2(CTC,
40-60 um)
2)The hard phase of tube rod is carbide
pellets which leads to higher impact resistance and better wear resistance than
CTC cloase rod.
Wear
resistance: the wear resistance is 6-7 times better than others. Tested by ASTM
G65 wear test.
Mainly
used for mining machinery. Geological tools etc; by Oxy-acetylene with weak
carburizing flame.
Product recommendation:
GT2102 (Cemented carbide grit, 30-60mesh)
GT2102-2(Cemented carbide grit, 30-40mesh)
GT2102-3(Cemented carbide grit, 40-60mesh)
3)Tube rod is composited by Cemented carbide
pellets, Spherical CTC and CTC. The layer has higher impact resistance, better
wear resistance and good fluidity than other rods.
Wear resistance: the wear resistance is 6-7
times better than others. Tested by ASTM G65.
Mainly used for oil method drill bits, such as
Tri-cone bit, Steel tooth bit, PDC bit, etc. By Oxy-Acetylene with weak
carburizing flame.
Product recommendation:
GT3302 (carbide pellets, 20-40mesh)
GT3302-1(carbide pellets, 14-40um)
4)The hard phase of the rod is monocrystal WC,
the welding layer has a higher wear resistance and better impact resistance.
The wear resistance is 6-7 times better than
others, tested by ASTM G65 method.
Mainly used for the repair and strength for oil
drills bits, such as PDC bit diameter holding by Oxy-Acetylene with weak
carburizing flame.
Product recommendation:
GT4104 (Monocrystal WC, 80-200mesh)
3. Welding Rope
Made
form mixture of CTC and self-fluxing nickel alloy covering on nickel wire. The
CTC is in spherical or irregular with good wear resistance; the nickel alloy is
in spherical or nearly spherical shape with good wettability and erosion
resistance and better corrosion resistance than tubular rod.
Recommend
to use Petroleum drilling tools, Concrete mixing blade, Mud pump, Coal sluice,
Coal drill pipe, Tunnel drilling machinery etc.
By
Oxy-Acetylene Welding with weak carburizing flame.
Product
recommendation:
GS110450N
(CTC, 4mm, HRC 47-55)
GS110550N
(CTC, 5mm, HRC 47-55)
GS110650N
(CTC, 6mm, HRC 47-55)
4. Welding Bar
The
rod is sintered by CTC and Ni-based powders. The CTC(Cast Tungsten Carbide) is
in irregular or spherical shape with better wear resistance and the nickel
alloy is in spherical or nearly spherical shape and has good wettability with cast
tungsten carbide. The cladding layer has a higher impact resistance and better
wear resistance.
Its
wear resistance and corrosion resistance is between tube rod and flexible rope.
Mainly
used on the Steel PDC bit, Concrete mixer blade, Mud pump, Miner chute, Miner
drill stem and Mechanical parts of Tunnel rock drill machine etc.
Welded
by Oxy-Acetylene with weak carburizing flame.
Product
recommendation:
GD4025253-3(CTC, SCTC, 4*600/6*600)
GD4030303-3(CTC,
SCTC, 4*600/6*600)
5. Welding wire
Intensified molybdenum titanium vanadium
composite chromium carbide welding wire can improve layer`s bonding strength
and tenacity. This wire can use for multilayer welding which has no peel off,
and it can maintain good wear resistance under certain impact working condition.
Product recommendation:GSQD671Mo-4(1.6mm)
Medium carbon and high chromium wear resistance welding wire has a higher
hardness, stronger wear resistance, and excellent toughness by adding a certain
amount of molybdenum alloys and boride. It has a better impact resistance and
strip resistance than high chromium cast iron type materials
Product recommendation: GSQD621Mo-4(1.6mm)
With
high sphericity & excellent alloy organization, cemented carbide pellet is
mainly used in welding, as an adding material of PTA Powder , tubular welding
rod, to improve the wear resistance of the workpieces greatly.
Product recommendation: GQ06
Cemented
carbide grit with different percent of cobalt has good abrasive resistance and
is widely used for making grinding, polishing and cutting tools.
Product
recommendation: GS08A
Weld Materials,Tubular Welding Rod,Welding Electrodes,Stainless Steel Welding Rod Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcmetalpowder.com
Breakthrough resistance airbag GB is expected to be introduced at the end of the year