“I bought the Dongfeng Qichen R50 in October 2015 and have been maintaining in the 4S shop. When the vehicle mileage was about 28,000 kilometers, I discovered that the engine leaked antifreeze and I applied for a replacement engine after checking at the 4S shop at the end of February 2018.†The owner of the car from Guangdong, Mr. Chen (a pseudonym), reported to the "China Business" reporter.
The reporter's investigation found that several car owners complained about the antifreeze leakage of Dongfeng Qichen Automobile R50 through car homes, car quality nets and other channels, and according to owners, this was not a recent problem. In addition, there are media reports of engine leakage related issues, or part of the Dongfeng Kai Chen D50, R50X and T70 models.
Since there have been complaints about Dongfeng Kaichen R50 leaking antifreeze, manufacturers and related departments have not dealt with it accordingly. The reporters sent a letter to Dongfeng Qichen and the AQSIQ to find out the situation. In response, Dongfeng Qichen stated that “according to the statistics of the after-sales aspect, the phenomenon of leakage of antifreeze liquid is very rare. The relevant feedback for the owner will be treated with caution.†AQSIQ stated that on the Dongfeng Kai Chen R50 The problem of leakage of antifreeze is currently being solved. Details are waiting for notice.
When interviewed by reporters, lawyer Chen Liang, a partner of the legal system Shengbang Law Firm in Guangdong, pointed out that “When consumers encounter problems, they need to maintain their rights and protect their rights in accordance with the law. There are four main methods. They can call consumer associations to make complaints, to the relevant administrative authorities. Competent authorities report complaints, initiate civil lawsuits through judicial channels, seek public opinion or media supervision."
Dongfeng Qi Chen R50 frequent leakage problem
“I bought the Dongfeng Qichen R50 at the end of 2014. The car was produced in July of the same year. As a result, I discovered the leakage of antifreeze at the beginning of this year. My car has just passed the warranty period, but it is usually less open, and the car is also very low. The rule is that the mileage is only 11,000 kilometers, said Mr. Bai (a pseudonym) owner.
The reporter discovered from the car quality network that since 2016, there have been more complaints about the Dongfeng Qichen R50 engine antifreeze. In addition, some automobile forums also have discussions such as "about the various leaks of the Kaichen R50," and they all said that the car (Dongfeng Kaichen R50) leaked antifreeze.
Mr. Chen disclosed to reporters that after applying for replacement of the engine, there were four new engines when going to the 4S store for repair. The staff asked Mr. Chen to pick one. “I guess it is estimated that there are a lot of owners who have changed the engine due to leakage.â€
After an interview with the reporter, it was learned that the problem of Dongfeng Kaichen R50 leakage antifreeze was not a recent occurrence. Miss Chen (a pseudonym) owner from Shandong revealed to reporters that the Dongfeng Qichen R50 she purchased had a problem of leakage of antifreeze as early as a year ago.
“I started the Dongfeng Qichen R50 batch production in February 2015 two years ago. At that time, I spent more than half a year and miles took thousands of kilometers to discover the situation where the vehicle leaked antifreeze.†said Miss Chen. . After discovering the problem, Ms. Chen opened the car to the 4S shop for inspection and confirmation. The manufacturer agreed to repair it, but said that it could only change the cylinder pad. Ms. Chen is not satisfied with the manufacturer's treatment plan and requires the replacement of the engine. Later, after several rounds of dealing, the manufacturer eventually agreed to help Miss Chen replace the engine.
Ms. Chen disclosed that “listening to other bikers said that most of the batches produced in 2014~2015 had the problem of leakage of antifreeze, and some D50 and R50X models also had leakage problems in some batches of vehicles.†Mr. Shu of Nanning ( Anonymous) also told reporters that the Dongfeng Qichen R50 vehicle of the 2015 batch had originally had this problem and could make claims within the warranty period.
According to complaints from netizens, most of the feedback results indicated that “4S stores can only change the cylinder pad,†and some netizens stated that “4S stores refused to provide free maintenance on the ground of not maintaining the store, but the vehicle was purchased in April 2015. There is no warranty period."
The reporter called the Dongfeng Kaichen maintenance department. The other party claimed that the warranty period of the car was 3 years. If there were problems with the vehicle during the warranty period, the owner could directly drive to the maintenance point and the maintenance personnel would check and handle it. However, the other party did not mention specific solutions.
In response, Dongfeng Qichen responded to this reporter's report that, according to the statistics of the after-sales sector, the phenomenon of leakage of antifreeze liquid was rare. We will actively organize after-sales service departments to conduct comprehensive professional inspections on vehicles that have problems. Once problems are found, Dongfeng Qichen will strictly comply with the laws and regulations including the “Three Guarantees†policy of automobiles, and effectively protect the owners’ rights and interests.
In addition, Dongfeng Qi Chen R50 has been discontinued production, concerned about the owner of the "discontinued impact on after-sales", Dongfeng Kai Chen is committed to stop production will not affect the owner of the repair and sale of any impact.
Antifreeze leaks or causes engine damage
Recalling the process of applying for free repairs, Mr. Bai still felt helpless. “At first, I had great hopes for the car's engine, but I found that the riders reflected the leakage of the cylinder pad. Finally, my own vehicle had this kind of problem. Because I anticipate the problem of vehicle leakage and antifreeze, Originally wanted to apply for free repairs and the application was rejected on the grounds that the warranty period had expired for 3 years."
Later, Mr. Bai continued to post complaints on the Internet and informed the manufacturer that he intended to find the Consumer Association for the record. The manufacturer then promised Mr. Bai to repair it for free. It is understood that the manufacturer replaced the cylinder pad for Mr. Bai’s vehicle and no problem has been found again after the vehicle was repaired.
Mr. Bai said that he was not very satisfied with the maintenance results. He believes that the maintenance volume of the engine cylinder pad is not small, and the manufacturers should be more active. A responsible manufacturer should not only be passive when it really feels pressure.
Jia Xinguang, executive director of the China Automobile Dealers Association, said that the reason for the leakage of antifreeze may be caused by damage to the pipeline or water tank. "Antifreeze is actually a cooling fluid used to cool the engine. If the antifreeze leaks, the cooling of the engine will not be guaranteed and it will lead to engine damage," Jia Xinguang said.
For the solution to the leakage of antifreeze, Jia Xinguang said that under normal circumstances there is no need to replace the engine, the most important is to check the piping system, such as joints and water tanks. "If you find a tank leak, you need to repair or even replace the tank."
"Antifreeze leakage is not usually running immediately, so there is a process, if found early, will not cause damage to the engine. The engine problem is another matter, the general water cooling system will not cause engine failure." Jia Xinguang said.
Chen Liang believes that in the warranty period of maintenance, change the cylinder head gasket or the engine, you need to look specifically at the maintenance of the original function. "If it is a problem with the design of the engine itself, then the manufacturer is obliged to recall all defective automotive products in accordance with the "Regulations on the Revocation of Defective Automobile Products". The manufacturer shall remedy the design defect free of charge, but will not carry out specific remedial measures. If there is a problem with the production process or the production process of the engine of a specific batch of specific automobiles, replacement of the parts cannot make the batch of engines meet the corresponding national standards, and this situation also requires replacement of the entire engine."
At the same time, Chen Liang also stated that if consumers can identify through a qualified accreditation body and prove to be a defect in the production, craftsmanship, or material of the vehicle, then whether it is a batch or only a single car problem, After the warranty period, the manufacturer still has the obligation to repair or replace it.
Previously, Dongfeng Qichen successively launched the T90, M50V, the new Qichen D60 and the new Qichen T70. The four new products further strengthened the market competitiveness of mainstream segments such as MPV, sedan and SUV, and promoted the formation of a complete product matrix. Drive sales growth with strong products.
According to reports, the R50 model mainly involved in this survey is not the main model of Dongfeng Qichen and has also been discontinued. Dongfeng Kaichen responded that after the R50 model was discontinued, relevant replacement models have not yet been introduced, and there is no plan to list new models related to it in the near future.
In addition, according to the relevant data, the owner complained that the leakage of antifreeze in the R50 model did not affect Dongfeng Qichen sales temporarily. Since its inception in 2017, Dongfeng Qichen has grown at a rapid rate, which is approximately 5 times higher than the industry's. The first-year terminal sales volume exceeded 140,000 units, an increase of 22.7% year-on-year.
Dongfeng Kaichen statistics show that as of March 21, the latest sales figures in March are: 9619 vehicles in a single month and 8,102 vehicles in a single month. It is expected that sales in March will hit a record high for the same period in history.
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.xtchvof.com