China best Export to Korea Custom Made CNC Milling Machines Outer Threaded Steel Spline Hollow Shaft with Great quality

Product Description

Product Parameters

 

Product Name Solid rod bars, Solid and hollow bars, Drilling rod bars, Drill stem, Hollow thick wall thickness pipe, Drilling pipe joint, Raise boring drill pipe
Standards AISI, ASTM, DIN, JIS, GB, BS   
Grades SAE1571/1045/4130/4140/4145H/4320/4340/5120/5140/ISO41Cr4/42CrMo/42CrMo4/20Cr/40Cr/20CrMo/SCM420/SCM440/SCM435/S235JR/S275JR/SAE1571/C45/S45C/Q345-B/45#/St52
Size Outside diameter: 100-1000mm
Inside diameter: 5-240mm
Technique Hot rolled, hot forged steel round bars
Heat treatment Normalized ; Annealed ; Quenched and Tempered, pre-hardened
Surface condition Oil anti-corrosive protection, black surface, peeling surface
Test Tensile strength, Yield strength, elongation, impact value, hardness, CZPT size, ultrasonic test, magnetic particle testing, etc. 
length 0.5m ~4.5m
OEM service We supply OEM processing on products as per your drawing on the bars
Exported to Kuwait, Venezuela, Chile, Middle East, the republic of Korea, Malaysia, Peru Etc.
Packing Sea worth standard exporting packing
Shipping term In bulk / FCL / LCL, partial shipment allowed
Delivery time Within 7 days for stocks supply.

Xinruyi Steel Group was built in year 2017 with registered capital of 30,000,000RMB, and we have been in the steel products industries for more than 10years. The group is located in HangZhou City, next to capital of ZheJiang Province, and it enjoy good transportation environment of 3 hours to nearest port and 1 hour CZPT the airport. 

As it is well known to all, HangZhou city is the biggest steel pipe base in North China, with this significant advantage on geography aspect, us company have developed into 1 modern international XINRUYI STEEL GROUP. Till now we have 2 production plants for steel pipes and plate series production and processing, and 3 warehouses for steel products. Our yearly production scale can be reach to 500,000tons, and our warehouse stocks is yearly above 20,000tons. So that we can meet all kinds of demands from different countries clients. Our salesmen are trained to get the best and professional skills on doing export trading dealing with various kinds of issues in the trading, which is a base that our buyers can have good buying experience. Till now we can supply the good quality products consisting of and not limit to the following, steel pipes, bars, rock bolts, guardrail CZPT pipe, guardrail board, color coated steel coils, galvanized coils, steel balls, steel chains, steel plates and steel bearing. Besides we can provides processing procedures for the steel products, like anti-rust protecting, cutting and chamfer, coupling, heat treating, bending, galvanizing, polishing, beveling, pickling, plastic spraying, CNC machining, and so on. 

With efforts of Xinruyi People we have the pleasure to serve the clients from more than 20 countries and areas, We earned good reputations from the clients without any claim. We finally become good friends and intimate partners with them. 

Looking forward, we get good confidence that we will expand our business scales to more countries and areas, and serve more people in the world. Because we always believe quality of the commodity is the life of company, stability is the essence of quality. Also the integrity in business will help bring the long term business relationship, so it is the code that 1 company can develop and survive. 
Xinruyi Group is looking forward to the cooperation with you! We believe 1 time cooperation, friends forever!
(Xinruyi Steel Group Swear: we do not cheat any of our client, we only do business with good faith and honesty! Xinruyi will NEVER offering incredible low rate to attract clients and sending less weight goods to make money. )
(Xinruyi Steel Group Swear: Even if we do not get the order, we do not cheat even 1 client!)
(We give Made-in-China complain center as below: complaint/)

Why Is Us

⊙More than 11 years experience in the steel industry ensuring us best ability supplying you best solutions on goods design, processing, transportation, and cost control.

⊙Abundant ready stocks and sizes assuring you the shortest delivery time and lowest purchase cost; comprehensive and various steel products production and sales range give us opportunity to serve more people.

⊙SGS authorized factory ensuring credit and truth on cooperation, No cheating to all and no shortage on weight in Xinruyi Steel, so you feel free and relaxed to place orders.

⊙Quality guaranteed. The MTC sheet issued by us will be presented together with other shipment documents for every lot. We accept any quality claim raised within 1 year. We always believe high-quality nature is stability, so you will receive same goods every time.

⊙7×24 hours on line communication. You can find us always there whenever you looking for. And for your orders, Xinruyi Sales have responsibilities to present their situations to you via pictures and videos for every stages.

⊙ Customized service help you avoid complex follow-up work, our professional processing on goods itself find you a good one-stop buying experience in our plants.

Frequently Asked Questions

1.What is your paying terms?
   Our usual paying terms are 30%TT as deposit and balance paid after seeing copy of bill of loading. For clients cooperated for more than 1 year, we accept 20% prepay. Beside we do business also under D/P and LC terms.

2.How long is your delivery time?
   For the goods we have in stocks, we deliver the goods within 5days. If it is a production order with volume not above 200tons, the delivery time will usually be within 25days after sealing contract. And the delivery time shall be slightly longer for order volume above 200tons.
3.Before cooperation we want a sample for inspecting of quality, is that okay?
  We can provide a free sample for you shall sample value not above 30USD, you only need to pay the express charge. For a sample valued more than 30USD, the express charge and just 1 half of sample value is on the account of you, and we afford the other half.
4.Does your company accept third party inspection?
   The answer is yes. Especially for new client, they have concern on product quality and quantity, so they authorized the third party inspection like SGS and BV several times to inspect the goods in stead of them, and we coordinated with their work well.
5.Do you accept annual supply order?
   Some of our clients purchase annually. They may place order at beginning or certain time of year, however they need us to supply the goods every month or every season. We can do and accept this kind of supplying. We do not ask for the storage charge, however some percentage of deposit will be with us.
6.What documents do you supply for each order?
   The documents will usually consist of Original Packing List, Commercial Invoice, Mill Test Certificate, Certificate of Origin, Insurance Policy, and Bill of Loading. Some other documents will be as per client request.

  
Finally we thank you again that you can visit Xinruyi Steel, please send your inquiry or comments freely.
We wish you always a beautiful day and in good health!

 

Applications of Spline Couplings

A spline coupling is a highly effective means of connecting 2 or more components. These types of couplings are very efficient, as they combine linear motion with rotation, and their efficiency makes them a desirable choice in numerous applications. Read on to learn more about the main characteristics and applications of spline couplings. You will also be able to determine the predicted operation and wear. You can easily design your own couplings by following the steps outlined below.
splineshaft

Optimal design

The spline coupling plays an important role in transmitting torque. It consists of a hub and a shaft with splines that are in surface contact without relative motion. Because they are connected, their angular velocity is the same. The splines can be designed with any profile that minimizes friction. Because they are in contact with each other, the load is not evenly distributed, concentrating on a small area, which can deform the hub surface.
Optimal spline coupling design takes into account several factors, including weight, material characteristics, and performance requirements. In the aeronautics industry, weight is an important design factor. S.A.E. and ANSI tables do not account for weight when calculating the performance requirements of spline couplings. Another critical factor is space. Spline couplings may need to fit in tight spaces, or they may be subject to other configuration constraints.
Optimal design of spline couplers may be characterized by an odd number of teeth. However, this is not always the case. If the external spline’s outer diameter exceeds a certain threshold, the optimal spline coupling model may not be an optimal choice for this application. To optimize a spline coupling for a specific application, the user may need to consider the sizing method that is most appropriate for their application.
Once a design is generated, the next step is to test the resulting spline coupling. The system must check for any design constraints and validate that it can be produced using modern manufacturing techniques. The resulting spline coupling model is then exported to an optimisation tool for further analysis. The method enables a designer to easily manipulate the design of a spline coupling and reduce its weight.
The spline coupling model 20 includes the major structural features of a spline coupling. A product model software program 10 stores default values for each of the spline coupling’s specifications. The resulting spline model is then calculated in accordance with the algorithm used in the present invention. The software allows the designer to enter the spline coupling’s radii, thickness, and orientation.
splineshaft

Characteristics

An important aspect of aero-engine splines is the load distribution among the teeth. The researchers have performed experimental tests and have analyzed the effect of lubrication conditions on the coupling behavior. Then, they devised a theoretical model using a Ruiz parameter to simulate the actual working conditions of spline couplings. This model explains the wear damage caused by the spline couplings by considering the influence of friction, misalignment, and other conditions that are relevant to the splines’ performance.
In order to design a spline coupling, the user first inputs the design criteria for sizing load carrying sections, including the external spline 40 of the spline coupling model 30. Then, the user specifies torque margin performance requirement specifications, such as the yield limit, plastic buckling, and creep buckling. The software program then automatically calculates the size and configuration of the load carrying sections and the shaft. These specifications are then entered into the model software program 10 as specification values.
Various spline coupling configuration specifications are input on the GUI screen 80. The software program 10 then generates a spline coupling model by storing default values for the various specifications. The user then can manipulate the spline coupling model by modifying its various specifications. The final result will be a computer-aided design that enables designers to optimize spline couplings based on their performance and design specifications.
The spline coupling model software program continually evaluates the validity of spline coupling models for a particular application. For example, if a user enters a data value signal corresponding to a parameter signal, the software compares the value of the signal entered to the corresponding value in the knowledge base. If the values are outside the specifications, a warning message is displayed. Once this comparison is completed, the spline coupling model software program outputs a report with the results.
Various spline coupling design factors include weight, material properties, and performance requirements. Weight is 1 of the most important design factors, particularly in the aeronautics field. ANSI and S.A.E. tables do not consider these factors when calculating the load characteristics of spline couplings. Other design requirements may also restrict the configuration of a spline coupling.

Applications

Spline couplings are a type of mechanical joint that connects 2 rotating shafts. Its 2 parts engage teeth that transfer load. Although splines are commonly over-dimensioned, they are still prone to fatigue and static behavior. These properties also make them prone to wear and tear. Therefore, proper design and selection are vital to minimize wear and tear on splines. There are many applications of spline couplings.
A key design is based on the size of the shaft being joined. This allows for the proper spacing of the keys. A novel method of hobbing allows for the formation of tapered bases without interference, and the root of the keys is concentric with the axis. These features enable for high production rates. Various applications of spline couplings can be found in various industries. To learn more, read on.
FE based methodology can predict the wear rate of spline couplings by including the evolution of the coefficient of friction. This method can predict fretting wear from simple round-on-flat geometry, and has been calibrated with experimental data. The predicted wear rate is reasonable compared to the experimental data. Friction evolution in spline couplings depends on the spline geometry. It is also crucial to consider the lubrication condition of the splines.
Using a spline coupling reduces backlash and ensures proper alignment of mated components. The shaft’s splined tooth form transfers rotation from the splined shaft to the internal splined member, which may be a gear or other rotary device. A spline coupling’s root strength and torque requirements determine the type of spline coupling that should be used.
The spline root is usually flat and has a crown on 1 side. The crowned spline has a symmetrical crown at the centerline of the face-width of the spline. As the spline length decreases toward the ends, the teeth are becoming thinner. The tooth diameter is measured in pitch. This means that the male spline has a flat root and a crowned spline.
splineshaft

Predictability

Spindle couplings are used in rotating machinery to connect 2 shafts. They are composed of 2 parts with teeth that engage each other and transfer load. Spline couplings are commonly over-dimensioned and are prone to static and fatigue behavior. Wear phenomena are also a common problem with splines. To address these issues, it is essential to understand the behavior and predictability of these couplings.
Dynamic behavior of spline-rotor couplings is often unclear, particularly if the system is not integrated with the rotor. For example, when a misalignment is not present, the main response frequency is 1 X-rotating speed. As the misalignment increases, the system starts to vibrate in complex ways. Furthermore, as the shaft orbits depart from the origin, the magnitudes of all the frequencies increase. Thus, research results are useful in determining proper design and troubleshooting of rotor systems.
The model of misaligned spline couplings can be obtained by analyzing the stress-compression relationships between 2 spline pairs. The meshing force model of splines is a function of the system mass, transmitting torque, and dynamic vibration displacement. This model holds when the dynamic vibration displacement is small. Besides, the CZPT stepping integration method is stable and has high efficiency.
The slip distributions are a function of the state of lubrication, coefficient of friction, and loading cycles. The predicted wear depths are well within the range of measured values. These predictions are based on the slip distributions. The methodology predicts increased wear under lightly lubricated conditions, but not under added lubrication. The lubrication condition and coefficient of friction are the key factors determining the wear behavior of splines.

China best Export to Korea Custom Made CNC Milling Machines Outer Threaded Steel Spline Hollow Shaft     with Great qualityChina best Export to Korea Custom Made CNC Milling Machines Outer Threaded Steel Spline Hollow Shaft     with Great quality

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