Yihui Carriage Bolt Manufacturer Is Guaranteed

First of all, from the development and production of hexagon bolts to the tolerability test, each step needs to be strictly controlled. At the same time, the tolerance test is also known as “strict”. Take the tolerability test as an example, the products should be thoroughly tested in high temperature, high heat and high humidity environment. Only the instruments that pass the test at each link can ensure “dynamic” and reliable accuracy.

Second, we must ensure the high quality and reliability of the raw materials and components of the measuring instruments. In order to do this, it is often necessary to stick to the best materials. By selecting internationally renowned lens suppliers to ensure good distance adaptability, the same distance coefficient ratio is higher than the industry average; high-grade substrates are used to reduce environmental (such as humidity) interference and electromagnetic interference; The mechanical structure of the external metal, plastic shell and other special mechanical design to prevent dust and dust, protect the internal structure and so on. High quality means high reliability and high reliability to minimize the impact of environmental hot and cold changes on the instrument.

Of course, accurate testing must follow a uniform standard and be publicly recognized and market recognized. Metrology and calibration products are widely used in calibration laboratories around the world, including national metrology agencies. These organizations need to provide strong technical support, requiring the highest level of precision, performance and reliability.

Haiyan Yihui Carriage Bolt Manufacturer has professional product manufacturing technology and spirit, providing comprehensive support and guarantee for our customers. At the same time, we also constantly update the knowledge related to the industry. If you have such needs, please pay attention. Our official website, we will bring more professional knowledge.

China’s DIN 603 Bolt Enterprises To Improve Brand Awareness

With the changes of the times, social science and technology have been developing rapidly. Nowadays, many industries are present in front of people with new developments. The development of many fields is very obvious. For example, the formation of many large-scale power generation equipment and the development of large-scale transportation vehicles are constantly progressing in a complete set of development models. The large-scale manufacturing industries developed by these people will be the development representatives in many fields in the future. From this point of view, one of the essential products in these devices will also enter the stage of fierce competition.

Nowadays, as an important part of the bolt classification, the DIN 603 bolts need to be continuously developed rapidly. How can the bolt-operating enterprises develop more stable and longer-term in the important development stage of the fasteners? After a thorough investigation of this issue, many companies are considering starting from the establishment of product brands and taking the road of product brands.

From the development history of fasteners for many years, the industry practitioners’ perception of the brand effect of DIN 603 bolts is relatively late, and China’s establishment of the brand is also relatively late. If the product wants to go abroad to get more development market, it must establish the brand road of bolts. If it is only enough to rely on small brands to obtain a big market, it is not enough to change the original development model and break through the bolts. The traditional model of developing an important development strategy is very important. Since the establishment of the brand is a relatively long process, it is necessary for the company to continue unswervingly after it is fully prepared. Once the road is successful, the brand benefits will gain the rewards. It can also use the brand to add value to the products, improve people’s awareness and improve the competitiveness of the company.

Yihui Carriage Bolt Manufacturer Create Rich Profits

316 material is resistant to chemical corrosion, pitting resistance and seawater corrosion resistance compared to 304M and 304HC. The main chemical composition has a certain relationship with the performance of stainless steel.

  1. Requirements for the mechanical properties of the body bolt material, especially the strength;
  2. Requirements for the corrosion resistance of materials under working conditions;
  3. The requirements of the working temperature on the heat resistance (high temperature strength and oxidation resistance) of the material;
  4. Requirements for material processing performance in terms of production process;

5, other aspects, such as weight, price, procurement factors must be considered.

Welcome to Haiyan Yihui Hardware Technology Co., Ltd. We are a professional Carriage Bolt Manufacturer with many years of experience in the market. We believe that we can provide you with comprehensive protection and create rich profits for you.

DIN 603 Bolt To Avoid Misalignment Method

In the use of DIN 603 bolts and nuts, a common problem is the occurrence of misalignment. So in the production process, how do we avoid misalignment? Let’s take a look at it.
In the symmetrical DIN 603 bolt and nut product, a symmetrical positioning hole can be installed to prevent misalignment during bending. When bent, the matte side of the DIN 603 bolt and nut product should be directed as far as possible in the direction of bending, so as not to tear the burr by tension. If not allowed, a process hole must be provided to position it. Rolling edge is also a special shape of the inner diameter of the curved hole. The thickness of the material of the rolled workpiece should be larger. The inner diameter of the thicker part should be larger. Generally, d>1.5 can be used. It is not necessary to set the center line of the crimping on the center of the metal sheet. If the plane of the metal sheet is placed at the tangent position of the cylinder, it is economical to manufacture.
Therefore, the DIN 603 bolt and nut can be used in these ways to avoid misalignment and ensure good performance.

The Actual Application Of Carriage Bolt Manufacturer

The body bolts are indispensable everywhere in life, the street lights erected on the road, the beautiful billboards at night, the flagpoles standing on the majesty, and the fixing of the body bolts at the bus stop signs. The role of the body bolts must not be despised. How is the body bolt so fierce? Let’s talk about the machining process of the body bolts. The body bolts are machined to the lathe wire, which requires an average of the thread, and the Carriage Bolt Manufacturer thread length must match the design criteria. The pallets and stiffening anchor plates in the body bolts are usually welded by artificial arc welding. The welds required for welding here are on average full and cannot have any pores and dry tumors. The size of the weld must be determined by the design request. The body bolts are inspected by the data clerk and then submitted to the quality inspectors for further inspection. The acceptance items are mainly to check the specifications and dimensions of the body bolts and the length of the thread buckles to see if it can meet the original design request and wait until the acceptance is passed. It is necessary to stop the archiving work, the archiving work should be registered according to the specification code, and the logo should be attached.


The street lights on the road, the station sign and so on under each steel column have body bolts and the base platform are connected together. In order to ensure the accuracy of the body bolt device, a smooth stop for the steel construction device. Before the construction device, the corresponding positions of the body bolts are fixed by bolt fixing frames. The body bolt fixing frames are made of steel plates of 6 mm and 10 mm thickness and 15 mm thick bamboo veneers. After the erection of the base platform template is completed, the body bolt group is placed into the root bottom according to the relative position, and then the bolt fixing frame and the base scaffold are tightly fixed. The time of the inspection requires the theodolite to correct the position of the body bolt. And welded with a diameter of 14 steel and body bolts into a well-shaped frame, supported on the template. The bottom of the bolt is supported by a 16-diameter steel bar and welded to the base backing reinforcement of the cap. The purpose of this is to prevent the body bolt from moving and not sinking. In the process of concrete pouring, the average and symmetrical feeding should be carried out around the roots, and try to prevent the position of the body bolts from changing due to the unevenness of the blanking. At the time of construction, the inspectors should monitor the position and elevation of the body bolts at any time. If it is found that the position of the body bolts is shifted, the adjustment should be stopped in time.

Hot-dip Galvanizing Process For DIN 603 Bolts

Due to the small size of DIN 603 bolts, irregular shapes and some threading, there are some obvious defects in hot dip galvanizing.

  1. It is difficult to screw the screw after plating. After the hot dip galvanizing, the residual zinc remains in the thread and is not easily removed, and the thickness of the zinc layer is uneven, which affects the fitting of the screw. It is stipulated in GB/T13912-1992 “Technical Requirements for Hot Dip Galvanizing Layer of Metal Covered Steel Products” and GB/T2314-1997 “General Technical Requirements for Electric Power Fittings”; the external thread of fasteners shall be in accordance with GB196 before hot dip plating. Standards are specified for machining or tanning, while internal threads can be machined before or after hot dip coating. However, in practical applications, customers often require galvanized layers for both internal and external threads. Therefore, various measures have been taken to solve the problem of hot dip galvanizing of threaded fittings. Such as the backlash after the screwing of the screw; reserved a large fit clearance; centrifugation and other methods. The backlash easily destroys the plating of the threaded part and even exposes the steel substrate, causing the fastener to rust. Deliberately over-range to increase the nut diameter or reserve clearance, it is easy to reduce the mating strength, which is not allowed for high-strength fit.

2, hot dip galvanizing operation temperature is high, will reduce the mechanical strength of high strength DIN 603 bolts. The strength of some threads of 8.8 bolts after hot dip galvanizing is lower than the standard requirements; the strength of bolts above 9.8 after hot dip galvanizing is basically unable to meet the requirements.

  1. The working environment is poor and the pollution is serious. The hot dip galvanizing process of fasteners is carried out at high temperature. The solvent drying and the zinc to be plated will cause strong irritating hydrogen gas when it is immersed in the pool; the zinc pool is exposed to high temperature for a long time, and zinc is generated on the surface of the zinc pool. Vapor, the atmosphere of the entire working environment is bad.

Although there are many defects in hot-dip galvanizing of fasteners, the thickness of the hot-dip galvanized coating, the bonding strength is good, and the long-term rot effect is good. It has always been respected in the power, communications, and transportation sectors.

Carriage Bolt Manufacturer Product Production Notice

The body bolts have the following three different ways to stop the heat treatment: three steels, quenched and tempered steel, spring steel, and carburized steel. The temperatures at which these steels are quenched during heat treatment are different. Then we also know that the selection of low carbon, that is, the alloy steel after quenching to stop the tempering below the low temperature of 250 degrees Celsius.

Today we continue to discuss. The carbon content is higher than that of medium carbon steel. After quenching, the high temperature (five to six hundred and fifty degrees Celsius) tempering (also known as quenching and tempering treatment) is stopped. This process can make the body bolts high. Under the condition of plasticity, sufficient strength is adhered to, so the ordinary steel called this kind of material is called quenched and tempered steel.

If you want the body bolts to achieve high strength, that is, to make the body bolts hard, and rather reduce the plasticity and toughness, the low-temperature tempering treatment of the gold-containing tempering with lower carbon content can obtain the so-called “ultra-high strength”. Steel”.

If the carbon content is between medium carbon and high carbon, such as 60 steel and 70 steel, and some high carbon steel is 80 steel and 90 steel, if these steels are used to make springs, then In order to ensure a high elastic limit, yield limit and fatigue limit, the medium temperature temper after quenching is used to complete the specification.

The body bolt is one of the current mainstream embedded parts. It is mainly used in the construction of the building base. When the body bolt is embedded, it is also required to operate in strict accordance with the pre-rules as the high-strength bolt. Today we mainly talk about the control of the body bolt height.

When we embed the body bolts in the bottom layer of the concrete foundation, when the length of the body bolts and the columns are not much different, the interval between the concrete cushions at the bottom of the bolts becomes very short. This time can be welded at the bottom of the body bolts. Length of steel bars. We need to use the instrument to calculate the length of the body bolt beforehand. This is to confirm the length of the section where the steel bar is taken. Then, after the spot welding of the steel bar, the flattening inspection is carried out. After surely, it is necessary to weld the steel. It is better to put it. Check the bolts after they are placed.

The Carriage Bolt Manufacturer chooses Haiyan Yihui. We have many years of development in the market and will be able to provide you with a variety of quality products and services. So if you have this need, don’t miss us.

DIN 603 Bolts More Accurate Installation Method

The DIN 603 bolt is one of the fasteners. It is responsible for the tightening of various constructions and equipment. The DIN 603 bolts are generally attributed to the pre-embedded bolts, which are buried in the lower part of the concrete and serve as the foundation. DIN 603 bolts come in a variety of shapes, some in the shape of an L, and some in the shape of an Arabic numeral nine. Different shapes of DIN 603 bolts also have different centers, of course, there are very different centers. The slim center is the same as the DIN 603 bolts, which are used to grasp the precision round surface, different structures and different constructions of different equipment.

Firstly, the scale should be accurately controlled, and the person who has been fixed must be fixed. Secondly, the fixing mold can be made according to the buried size of the bolt to ensure that the relative orientation of the bolt is not offset; then, when the concrete is poured, the instrument is used. Control the height of the bolt and the detailed distance from the axis and adjust it at any time during the casting process to ensure its accuracy.