Views: 1 Author: PEAK Publish Time: 2024-01-31 Origin: Original
Nowadays, tractors have a high failure rate, requiring major repairs every two to three years and hundreds of hours of basic work. However, in the old Shanghai 50 tractors, there is no need for major repairs every ten to twenty years of work. Is it because the technology is not as good as before or the production process is not as good as before?
To answer this question, there may be many tractor manufacturers who oppose it and believe that they intentionally refer to their products. This is to clarify that it is not targeted at any manufacturer.
Today's tractors are indeed not as durable as those in the 1970s and 1980s, which production enterprises have to admit, including imported tractors. Even if you do not admit it, it is not possible. The fact is the fact.
The tough and practical performance of the old Shanghai 50 tractor is well-known to many experienced mechanics. The durable Shanghai 50 is known as the myth of tractors, but unfortunately, it was later controlled by New Holland and never had its former glory.
I don't agree with your comparison. In the 1980s, the old Shanghai 50 was a backbone of transportation, running continuously on its axles almost every day. On average, it had to work 2000-3000 hours a year. Most of the tires on this car had changed countless times, and after 20 years of work, it retired and worked in the countryside, contributing greatly to the socialist construction at that time. Older agricultural machinery workers have feelings for the Shanghai 50.
Looking at the current tractors, there are several cars that can work without repair for three to five years, and the actual work time is mostly 200-350 hours per year, which means that Shanghai's 50 year work time is equivalent to the current tractor's 10 year work time.
Why are tractors not durable now that technology has improved?
Listen to the old farmer slowly explain to you:
1. The production technology of gears and shafts has indeed improved, but it is not just about improving, it is just about reducing costs and replacing traditional production processes with new technologies. For example, traditional forging has been replaced by modern touch forging, where thousands of hammers are refined into steel.
2. Nowadays, products pursue cost-effectiveness rather than quality. In the 1970s and 1980s, it was a state-owned economy with national allocation. Shanghai was an old industrial base with strong production capacity, and Shanghai made was synonymous with high-quality products. Manufacturers can purchase the best accessories and manufacture them step by step with the best craftsmanship. For example, gear shafts: traditionally, they need to go through processes such as forging, processing, soaking, quenching, tempering, etc. However, now it is possible to directly process a round steel with a high frequency, and the lifespan will be the same.
3. Nowadays, replacing old materials with many new materials is not just about how good the new materials are, but how cheap the new materials are. For example, using ductile iron instead of forged steel for crankshafts. Even if manufacturers try to deceive them into saying that ductile iron can reach the strength of steel parts, it is all nonsense. Do you think they dare to use ductile iron for aircraft and tank crankshafts?
4. Technical assembly. In the 1970s and 1980s, workers wanted to have a good technical job, not mainly for wages, which created a large number of technically reliable and mature technical workers. The old farmer once had a joke that even the tractors they installed with their eyes closed were fine. But now, due to low wages and high personnel turnover in agricultural machinery enterprises, many of them are recruited from society and technical schools. If they can just make do and load the vehicles, such workers will definitely encounter major problems if they go to the core workstations of tractors.
Once there was a large agricultural machinery enterprise that said: Our factory is the largest technical school, and many technical workers are trained by us, and we are proud of it!
Alas, don't you think about it? Isn't this using the money from farmers to buy machines to pay for their tuition.
5. Nowadays, products are eager to go on the market and have not undergone strict destructive experiments. The reliability of products is tested by the market, which can lead to many malfunctions, some of which can even be fatal.
A tractor consists of thousands of components, and now everyone is pursuing price. The manufacturer's production standard is to use as long as it can be used, and there will definitely be no good products.
In recent years, products have become less durable. Therefore, if a company produces a high horsepower small chassis, the 30 horsepower chassis has already reached 80 horsepower, the 80 horsepower chassis has reached 160 horsepower, and the 120 horsepower chassis has reached 210 horsepower. National leading enterprises have also joined this army, and tractors will become even less durable in the future.
