Choose an open bottom pouring system. According to the material of the casting, it is determined that the sprue cup is made of refractory bricks, and the pouring system is made of ceramic pipes. When designing the pouring system, in order to obtain good casting quality, the method of relative pouring in the width direction is adopted, that is, the two sprues are connected to the sprue cup through a "bridge" method, and their distribution is shown in Figure 2. The blocking section design method is used to calculate the dimensions of each pouring system of the casting [4. The cross-sectional area of the sprue is 50.24cm2 and the height is 1030mm; the cross-sectional area of the cross-runner is 50.24cm2 and the length is 4525mm; the cross-sectional area of the inner runner is 31.4cm2 , the length is 60mm; the cross-sectional area of the "bridge" sprue is 50.24cm2, and the length is 3040mm. The design uses riser feeding and cold iron to enhance sequential solidification. The risers are easy to cut. There are 32 risers in 1#, a cylinder with a diameter of 180mm and a height of 360mm. There are 8 risers in 2#. It is a cylinder of 250mm and 360mm high. The placement of the riser and cold iron is shown in Figure 3 and Figure 4. This piece is a long casting with an outline size of 4600mmx2550mmx550mm. In order to prevent deflection and deformation, when making the plastic pattern, an anti-deformation plastic pattern is made in the opposite direction of the possible deformation ("hot and cold convex" [5]) of the casting. ; Leave the amount of reverse deformation at 2mm/m

This casting is a large thick-walled part. According to the determined production program and the structural characteristics of the part, if ordinary casting technology is used, more sand cores will be used. Issues such as the placement, positioning, and exhaust of the sand cores will greatly increase the casting process. difficulty. In view of the single-piece and small-batch production plan, the real mold casting process (that is, the casting method that combines ordinary sand molds and lost foam molds) is used for production. This plan uses STMMA as the model material, and uses alkyd oil urethane resin sand from self-hardening urethane resin sand to fill a certain thickness of molding sand on the surface of the model, and use dry sand to fill the rest of the model, which can reduce the loss of self-hardening resin sand. dosage and reduce costs. According to the reference [3], it is determined that the coating of the steel casting is made of lost foam casting steel coating prepared from aggregates of 70% bauxite and 30% jelly powder. It is brushed and the thickness of the coating is about 4mm.

Dear visitors and customers： According to the regulations of national statutory holidays and taking into account the actual situation of the company, we hereby notify you of the arrangements for the National Day holiday in 2023 as follows: In order to enable employees to have full rest and reunite with their families, the company has decided to take a National Day holiday from September 29th to October 6th, with a total of 8 days off. Work on October 7th (Saturday) and October 8th (Sunday). During the holiday period, please ensure that your phone is unobstructed so that the company can contact you at any time. Although the company will be on vacation during the National Day holiday, our customer service will be online 24/7. If you have a need to purchase ball screws, linear guides, sliders, and castings, please feel free to contact us via email, phone, or online chat. We will reply to any questions or concerns you may have as soon as possible. Thank you for your trust and support in our company. During this period, if there are any emergencies or needs, please feel free to contact us through the following contact information: Tel:+86 17372250019 Email: zhangchaochun@njstai.com

A casting is a part formed by injecting the connector's metal, plastic, or other material into a mold and then allowing it to cool and solidify. Casting process manufacturing is a common type of manufacturing that allows the production of parts of various shapes, sizes and complexity to meet the needs of various applications. Here is some key information about castings: 1. Casting materials: Castings can be made of many different materials, including metal, plastic, ceramics, etc. Common metal castings include iron, aluminum, copper, zinc, magnesium, etc. 2. Casting methods: Casting can be divided into several different methods, including: Sand Casting: One of the oldest and most common casting methods, parts are made by dissolving metal and absorbing it into a sand mold. Die Casting: This is a high-pressure casting method commonly used to produce high-precision and high-strength metal parts. Investment Casting: Also known as lost wax casting, it is a precision casting method for manufacturing parts with complex shapes. Powder Metallurgy: A method commonly used to make powder metal parts by compressing the metal powder into the desired shape and then baking this sintering. 3. Casting applications: Castings are widely used in various industrial fields, including automobile manufacturing, aerospace, construction, electronics, medical equipment, engineering machinery, etc. 4. Casting characteristics: Casting manufacturing has the following characteristics and advantages: Variety: Castings can create parts of all shapes and sizes, from small precision parts to large structural parts. Economical: Casting is generally an economical manufacturing method because it can produce large quantities of parts in a relatively short period of time. Complexity: Casting is capable of creating parts with complex geometries where other manufacturing methods may be more expensive or impractical. Design freedom: Casting offers a wide range of design freedom, allowing for easy customization of parts. Overall, casting manufacturing is an important manufacturing process that plays a key role in various industrial fields and is beneficial to meet the needs of various different applications.

Castings are metal or alloy products manufactured through a casting process and are commonly used in the manufacture of parts and components in various industrial fields. Casting is a common manufacturing process in which liquid metal or alloy materials are poured into pre-prepared molds and then cooled and solidified to obtain the desired shape and size.

When choosing the right ball screw, you need to consider the following aspects: 1. Load requirements: Determine the load conditions of the required transmission, including load size, direction and load type (static load or dynamic load). Select the appropriate ball screw load capacity based on the load requirements to ensure it can withstand the required force and torque. 2. Accuracy requirements: According to the accuracy requirements of the application, select the appropriate accuracy grade of the ball screw. The accuracy grades of ball screws are usually represented by P grade, UP grade and precision grade (C grade). Choose the appropriate grade according to specific requirements. 3. Stroke requirements: Determine the required linear stroke length, that is, the effective movement range of the screw. Select the ball screw of appropriate length according to the stroke requirements. 4. Speed requirements: Determine the required linear motion speed according to the application requirements. The ball screw will generate heat when it moves at high speed. Factors such as heat dissipation and lubrication need to be considered to select a ball screw that can meet the speed requirements. 5. Environmental conditions: Consider the special requirements of the application environment, such as temperature, humidity, corrosion, etc. When selecting a ball screw, it is necessary to ensure that its material and coating are suitable for the environmental conditions in which it will be used. 6. Life requirements: Understand the expected life requirements of the application and select the rated life of the ball screw to meet the requirements. Rating life is usually expressed in operating hours under rated load. 7. Installation and maintenance: Consider the installation and maintenance requirements of the ball screw, such as lubrication method, sealing performance, and ease of repair and replacement. 8. Cost considerations: When choosing a suitable ball screw, you also need to consider cost factors, including the price of the ball screw itself and application-related cost factors, such as maintenance costs and replacement parts costs. It is best to consult the ball screw supplier or a professional engineer for evaluation and selection based on specific application needs. They can provide more specific advice and technical support to help you choose the most suitable ball screw to meet your needs.

A ball screw is a mechanical device used to convert rotary motion into linear motion. It consists of thread-shaped balls and corresponding threaded belts. The balls roll on the threaded belts to achieve linear motion on the rotating axis. Ball screws have the characteristics of high efficiency, precision, and good rigidity, and are widely used in many fields. The following are some common applications of ball screws: Machine tools: Ball screws are widely used in machine tools, such as CNC machine tools, lathes, milling machines, etc. It is used to realize workpiece clamping, workpiece feeding, spindle movement, etc., improving the accuracy and efficiency of processing. Robots: The application of ball screws in industrial robots is very important. It is used to drive each joint of the robot to achieve movement and ensure the positioning accuracy and stability of the robot. Automotive industry: Ball screws have multiple applications in the automotive industry, such as lathe turntables, brake systems, fuel injection systems, etc. It can provide high-precision linear motion to meet the precision and reliability requirements of the automotive industry. Aerospace: Ball screws play an important role in aerospace. It is widely used in aircraft flaps, slats, casters and other components to achieve precise motion control. Medical equipment: Ball screws are also widely used in medical equipment. For example, it is used in CT scanners, operating tables, X-ray machines, and more to provide precise positional control and motion. In addition to the above fields, ball screws are also widely used in electronic equipment, textile machinery, printing machinery, injection molding machinery and other industries. Overall, ball screws play an important role where precise and efficient linear motion control is required.

Rail: A rail is a linear structure, usually straight or nearly straight, whose surface is ground and treated with high precision to provide a smooth moving surface. There is a structure similar to a groove or a protrusion on the guide rail, which is used to cooperate with the slider to realize sliding movement. Slider: The slider is a component that slides on the guide rail through an interlocking structure with the guide rail. It is usually made of metal or engineering plastics, and has grooves or protrusions that match the guide rail, so that the slider can slide smoothly on the guide rail. Bearings: In the contact area between the slider and the guide rail, high-precision rolling bearings or plain bearings are usually used to reduce friction and achieve smooth movement. Guiding mechanism: The design of miniature linear guide usually includes guiding structure to ensure that the slider will not be skewed or tilted during motion. These structures help maintain high-precision movement. Accessories and additional components: Depending on the application requirements, the miniature linear guide system can be equipped with additional components, such as sensors, limit switches, drives, etc., for automatic control and monitoring.

Inspection of miniature straight stairs usually involves the use of various sensors and measuring devices to evaluate the geometric parameters, surface quality and motion performance of the stairs. Here are some common methods and equipment that may be used to detect micro-straight stairs: Optical inspection: use optics, such as laser range finder, sensor vision system or optical interferometer, to measure the geometric parameters of stairs, such as straightness, parallelism, perpendicularity, etc. These methods can provide non-contact optical measurements. Surface quality inspection: Use an optical microscope or a high-resolution camera to inspect defects, scratches, oxidation, etc. on the surface of the stent. Mechanical measurement: Use precision measuring tools, such as micrometers, vernier calipers, etc., to measure the size, coordinates and straightness of the trestle. Electronic Measurements: Use electronics, such as encoders or linear sensors, to monitor the position and movement of stairs. This can be used to assess the stability and repeatability of the movement of the stairs. Acoustic inspection: Evaluate the condition of the beam by analyzing the sound it produces during its movement. Unusual sounds may indicate a problem with the beam. Vibration analysis: Use a displacement meter or a vibration sensor to detect the vibration of the vibrator to determine whether there is abnormal vibration or concentration. Magnetic detection: The displacement sensor on the tunnel detects the earthquake and deformation of the tunnel by measuring the change of the magnetic field. Thermal detection: Use infrared thermal imaging cameras to detect the temperature distribution of the beam during work to determine whether there are abnormal hot spots or overheating problems. Pressure sensor: Place a pressure sensor on the stairs to monitor the force of the stairs and whether there is no uniform or abnormal force. Using the above methods comprehensively, the condition, quality and performance of the miniature linear guide can be comprehensively evaluated. Which method to choose depends on the parameters to be detected and the required precision. Before testing, it is necessary to ensure that the equipment and sensors used have sufficient performance accuracy and stability to ensure the accuracy of the test results. At the same time, according to the use and requirements of the spectrometer, corresponding testing standards and procedures can be formulated.

A miniature linear guide is a device used to achieve precise positioning and linear motion, usually consisting of a guide rail and a slider. It is used in many fields for applications that require high precision, low friction, stability, and repeatability, such as semiconductor manufacturing, medical equipment, robotics, optical equipment, etc. Miniature linear guides usually include the following main components: Rail: A rail is a linear structure, usually straight or nearly straight, whose surface is ground and treated with high precision to provide a smooth moving surface. There is a structure similar to a groove or a protrusion on the guide rail, which is used to cooperate with the slider to realize sliding movement. Slider: The slider is a component that slides on the guide rail through an interlocking structure with the guide rail. It is usually made of metal or engineering plastics, and has grooves or protrusions that match the guide rail, so that the slider can slide smoothly on the guide rail. Bearings: In the contact area between the slider and the guide rail, high-precision rolling bearings or plain bearings are usually used to reduce friction and achieve smooth movement. Guiding mechanism: The design of miniature linear guide usually includes guiding structure to ensure that the slider will not be skewed or tilted during motion. These structures help maintain high-precision movement. Accessories and additional components: Depending on the application requirements, the miniature linear guide system can be equipped with additional components, such as sensors, limit switches, drives, etc., for automatic control and monitoring. The assembly and installation of miniature linear guides requires a high degree of expertise and technology to ensure their performance and precision. Different brands and models of miniature linear guides may be different in design, installation and maintenance, so the assembly manual and guidance provided by the manufacturer should be carefully read before operation. Proper assembly and maintenance of miniature linear guides can ensure long-term reliable operation, providing precise motion control.

Miniature linear guides are compact linear motion devices for high-precision linear motion in limited spaces. It usually consists of a guide rail and a slider, which is used to allow the slider to slide smoothly and precisely on the guide rail. Miniature linear guides are suitable for applications requiring small-scale, high-precision linear positioning and motion control, such as automation equipment, electronic assembly, medical equipment, optical instruments, etc. Key Features and Benefits: Compact design: The compact design of miniature linear guides is suitable for installation and use in limited spaces. High Accuracy: Thanks to precision machining and engineering, miniature linear guides are capable of providing high precision linear motion, typically in the range of a few microns or less. Low friction: Using high-precision bearing system and lubrication technology, miniature linear guides can reduce friction when sliding and provide smooth motion. Stability: The structural design of the miniature linear guide can provide stable movement, reduce vibration and shaking, and help maintain positioning accuracy. Repeatability: Due to the precision of its design and manufacture, the miniature linear guide can maintain the same positioning accuracy in multiple movements and has good repeatability. Diverse applications: Miniature linear guides are widely used in many fields, such as semiconductor manufacturing, medical equipment, electronic assembly, optical equipment, precision measuring instruments, etc. Accessories and integration: Miniature linear guides often allow the integration of additional components such as sensors, limit switches, motor drives, etc. to achieve higher levels of automation and control. When installing and using miniature linear guides, it is important to follow the installation manual and operating instructions provided by the manufacturer to ensure proper assembly and optimum performance. Different brands and models of miniature linear guides may differ in design and operation, so operators should be familiar with the characteristics and requirements of specific products.

A linear guide is a mechanical component used to achieve linear motion, and it usually consists of a guide rail and a guide rail slider. With the characteristics of high precision, high rigidity and low friction, linear guides are widely used in many fields and industries. Here are some common uses for linear guides: CNC machine tools: Linear guides are widely used in CNC machine tools, such as machining centers, milling machines, lathes and drilling machines. They can provide high-precision linear positioning to ensure the machining accuracy and surface quality of the workpiece. Robots and automation equipment: Linear guides are often used in industrial robots and automation equipment to achieve linear motion of robotic arms and actuators. Their high stiffness and repeatability ensure accurate positioning and motion control of the robot. Printing and packaging equipment: In the printing and packaging industry, linear guides are used to convey and position equipment such as printing machines, die-cutters, and case sealers. They are able to provide stable linear motion and high-speed operation to meet the needs of efficient production. Electronic equipment manufacturing: Linear guides play an important role in electronic equipment manufacturing, for example in surface mount (SMT) equipment for precise positioning and assembly of on-board components. Measurement and inspection equipment: Linear guides are widely used in precision measurement and inspection equipment, such as coordinate measuring machines (CMM) and optical inspection equipment. Linear guides can provide stable linear motion and high-precision position measurement to ensure the accuracy of measurement and detection. In addition to the above applications, linear guides can also play a role in many fields, such as aerospace, medical equipment, semiconductor manufacturing, etc. In different application scenarios, the requirements and specifications of linear guides may vary. Therefore, when selecting and applying linear guides, specific requirements and conditions need to be considered to ensure the stability and performance of the system.