2, in order to be able to add a variety of required compounding agents to rubber, raw rubber first needs to be plasticized to improve its plasticity; Then, carbon black and various rubber auxiliaries are evenly mixed with rubber to form rubber compound through mixing; The rubber material is pressed out to make a certain shape blank; It is then combined with a textile material (or with a metal material) that has been calendered or coated with glue to form a semi-finished product; Finally, after vulcanization, the plastic semi-finished product is made into a highly elastic final product.
3,Latex polystyrene butadiene rubber dissolved polystyrene butadiene rubber and thermoplastic rubber SBS butadiene rubber is prepared by solution polymerization of butadiene, butadiene rubber has particularly excellent cold resistance wear resistance and elasticity.
4, rubber tree cut rubber, after processing can be made of rubber products, latex collected from the rubber tree, after dilution with acid solidification, washing, and then pressed, dry, packaging, that is, natural rubber. Depending on the source, rubber can be divided into natural rubber and synthetic rubber.
5, early rubber is derived from rubber trees, rubber grass and other plants latex, made of elastic after processingThe role of Wireless charging and rolling machine is the most effective, practical and reliable crushing machine at present. The working principle of the impact crusher is simply the principle of stone beating stone. Let the stone collide with the stone accelerated by the impeller in the natural falling process, so as to achieve the purpose of breaking.
Basic introduction Chinese name Wireless charging and rolling machine : Tektronix Foreign language name: TEKTRONIX full name ① : TEKTRONIX Technology company established timeCompany Address: No. 1227 Chuanqiao Road, Pudong New Area, Shanghai Basic Facts, cooperation in China, Main products and services, Basic Facts Tektronix Technology Corporation is a leading global provider of test, measurement and monitoring solutions.
Simple structure and reliable performance The mechanical system has simple structure, low failure rate, high reliability and stable operation. Under the premise of ensuring the comprehensive performance, the machine structure has been optimized, and the transmission stability is high and the performance is reliable. The machine integrates hydraulic adjustment and hydraulic protection in one, and it is convenient to clean the cavity. Repair work can be taken outAfter the rack is completed, the liner replacement time is short, saving the downtime maintenance time.
The basic processes of free forging include upsetting, extension, stagger, punching, cutting, bending, twisting and forging welding. Upsetting: Forging of impellers, gears and discs is produced by reducing length and increasing cross section. Extension: By reducing the cross section and increasing the length to produce shafts, forging billets, etc. Stagger: make one part of the billet relative to the other part of the displacement, stagger each other, the axis line is still parallel to each other, more used for bendingThe production of axes.
Hammering: Hammering is one of the core processes of free forging, and the metal material that has been heated is placed on the forging machine for hammering, so that it is mechanically deformed, stretched and reduced into metal parts of the desired shape and size. Blanking: Blanking is the cutting, cutting or punching of forged metal parts to meet the requirements of various engineering projects.
Free forging sequence is generally divided into basic process, auxiliary process and finishing process. The basic process refers to the process that can greatly change the shape and size of the blank, and is also the main deformation process in the free forging process. Such as upsetting, drawing, punchingMandrel elongation, bending, misalignment, torsion, etc. Auxiliary processes refer to various pre-deformation processes before the billet enters the basic process. Such as ingot chamfering, precompression clamp handle, step shaft segment indentation.
upsetting, the height of the billet decreases, the cross-sectional area increases, often used for forging processing cake forgings, hollow forgings before punching the billet cross section increases and flattens. Drawing length, blank cross-sectional area is reduced, length is increased for shaft forging forming or to improve the internal quality of forgings. Punching, forging through holes or semi-through holes in the blank, forging forgings with holes and hollow forgings.
Has the effect of modifying the ground and improving the lawn landscape wireless charging and rolling machine . The working device of the lawn roller is the rolling roller wireless charging roller , which is usually a hollow roller rolled with steel plate wireless charging roller , and can also be made of polymer , in order to increase and adjust the weight of the roller, water or sand can be added to the inside of the roller. How to use lawn roller Wireless charging roller : rolling can be manually pushed heavy rolling or mechanical traction. The mechanical roller is 80 ~ 500kg, and the hand wheel weighs 60 ~ 200kg.
Lawns with weak growth potential and lawns with too dry or too wet soil should not be rolled.
Pest control Many lawns are easy to breed pests and diseases, need to do a good job of prevention and control in advance, regular pruning, the grass and debris clean up, do not let the lawn be blocked.And to check often, found that there are pests and diseases, must be treated in time, you can spray agents to kill, to prevent a large area of lawn wilt.
[Answer] (1) Eliminate pollution sources. (2) To formulate the maximum allowable limit standards for toxic and harmful metals in various types of food, and strengthen regular supervision and testing. (3) Keep toxic and harmful metals and their compounds properly to prevent ingestion, misuse and accidental or man-made pollutionFood.
By innovating production equipment and realizing automated operations, operators can avoid exposure to dust; The wet operation can prevent dust from flying to a large extent and reduce the dust concentration in the workplace; For places that cannot use wet operation, closed air extraction and dust removal methods should be adopted. Personnel exposed to dust during operation must wear dust-proof protective gear when it is difficult to reduce the dust concentration to meet the hygienic standards of the workplace through dust prevention and dust reduction measures at the work site.
Strengthen the management of agricultural chemicals. (2) Limit the use of food processing utensils, pipes, containers and other metals containing arsenic and leadPackaging materials, as well as additives and various raw materials containing such heavy metals. (3) Reduce environmental pollution. (4) Strengthen food hygiene supervision and management.
2, when the rolling machine can not work smoothly or produce mess, the possible reasons include: the rotating direction of the rolling head is not correct, ensure that the direction is correct to prevent mess. The specifications of the rolling head do not match those of the steel bar. Check whether the specifications match. The positioning sleeve sequence is incorrect. Adjust the positioning sleeve sequence to ensure correct operation. If the roller head is improperly installed, ensure that all components are correctly installed. rollWheel or positioning sleeve wear, replace the wear parts in time.
3, ③ the positive and negative rotation interval time is too short; ④ The circuit breaker may be burned; The length of the thread is not stable ① the center screw is loose; ② Clamping clamp is not clamping; ③ The position of the reinforcement is wrong (irregular); ④ The front travel switch does not work. Thread incomplete, messy, not on the wire ① improper debugging or rolling wheel is damaged; ② The straight axis of the rolling wheel is cracked; ③ Generating gasket pad wrong; ④ Components are installed incorrectly or components are cut incorrectly.
4, you may not parallel the two rolling wheels, and the middle part of the rolling wheel is too stressed and damaged. Or maybe twoThe adjustment of the distance between the rolling wheel is too small, and it is easy to cause damage to the rolling wheel. The correct adjustment should be that the screw thread type should be full, and the rolling wheel should be returned. If the pressure continues at this time, it is easy to cause damage to the rolling wheel.
5, always damaged from the center of the main reason is that the damaged part is the head of the bolt in this part of the work, the condition of damage is that there is a workpiece to be processed on the tooth side of the wire rolling wheel during wire rolling processing, and there is no workpiece in the tooth groove on the other side of the tooth resulting in force imbalance on both sides of the tooth, the bolt head in the part of the wire rolling wheel is damaged. In particular, the performance of material bolts with high mechanical strength is outstanding.
6, the roller adopts spiral Angle technology, which makes the steel bar easier to be involved and ensures the smooth formation of threads. The advance and retreat operation is started by pressing the main motor button, and the motor drives the rolling head to rotate. The operator carries out the feed operation through the handle, when the thread processing is completed, the stroke switch is triggered, and after a delay of a period of time, the rolling head will automatically reverse back to the initial position, at which time the machine will automatically stop, ensuring the orderly and safe process.