Precision boring of aluminum alloy frames

The frame (see picture) is a key component in the gyroscope and inertial navigation test equipment. It has two high-precision coaxial holes, which are perpendicular to each other and coplanar. Because it is a large-sized thin-walled aluminum alloy frame, it is a difficult problem for boring. A.......

Improvement of the fan blade of lathe motor

Our factory purchased the LX616-1 type lathe in 1989. After less than one year of use, the main motor fan blade (Fig. 1) was broken more than 10 times. The reason was that the fan blade structure design was unreasonable and the fan blade was heavy. The turning inertia is large, and the strengt.......

Three points of rational fertilization

1. Application of organic fertilizer and inorganic fertilizer
It is best to use refined organic fertilizer for organic fertilizer. The average crop is applied about 200 kg per mu per season, and the application time is 7 to 15 days before crop plantin.......

Category of pesticides mixed

The cause of the mixed use of pesticides is complicated. At present, they are mixed according to the scope of expanding prevention and control, eliminating drug resistance and increasing drug efficiency. The main types are as follows;
1. Mixture of insecticides: It is a mixture of two.......

Jingri Kemei Company won many honors in 2008 super hard

In the production and operation in 2008, Jingri Kemei Company adhered to the principle of “honesty-based, safe production and technological innovation” and won the titles of “Contract-honoring and Credit-Reliable Enterprise” and “Advanced Unit of Safety Producti.......

Hexagon Measurement Group acquires US Measurement Services

Hexagon Metrology of Sweden recently announced that it has acquired Advanced Digital Measurement Works (LLC) in Santana, California. Originally part of the Surveyor's Service Company (also a subsidiary of Hexagon), the company has been providing precision industry for a number of industr.......

Four ways to increase organic fertilizer

Farmers who want to increase farmland organic fertilizer can do so in the following ways:


First, vigorously promote the return of straw to the field. Straw returning is an important way to increase soil nutrients, increase soil organic matter content, improve soil physical and.......

What are the causes of vegetable fat damage?

When winter arrives, greenhouse vegetables begin to be shackled again. Every season, crops grown in greenhouses often suffer from chemical fertilizer burning, ammonia hazard and nitrous acid gas poisoning.

Ammonia poisoning. In recent years, it has often occurred in the production.......

Winter crops are applied to the application of wax fertilizer

1, as the growth of the object: the leaves of the green color of the long seedlings should not be applied to the fertilizer, the leaves of the green and strong seedlings are less or not applied, the leaves of yellow-green thin and weak seedlings should be re-applied.
2, look at the so.......

How to identify soybean deficiency syndrome

(1) Nitrogen deficiency: First, the true leaves are yellow, and when it is severe, it will yellow from the bottom to the top of the new leaves. There are parallel continuous or discontinuous iron plaques along the veins on the compound leaves. The chlorotic spreads from the tip to the bas.......