Causes - Remedy (1)

1. The pump delivers against an excessively high
discharge pressure
- open discharge valve further until the duty point
conditions have been attained (adjusted)

2. Excessively high back pressure
- fit an oversize impeller2)
- increase rotational speed
(applies to turbine or I.C. engine driven pumps)

Definition and Alignment Method

Alignment Definition

The process of reducing the misalignment of the two adjacent shafts connection by a coupling
so that the center or rotation for each shaft is as near as collinear as practical during normal operation.
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Desain Gating System

Tulisan ini adalah lanjutan dari tulisan terdahulu mengenai perancangan cor. Jika belum sempat membacanya silahkan klik disini

3.Desain Gating System
a. Sprue
Formula yang menghubungkan luas potongan melintang bagian atas sprue danl luas potongan melintang choke.

PERANCANGAN COR (CASTING DESIGN)

1.Tahapan-Tahapan Pendisainan sistem alir pengecoran (Gating System)

Untuk menentukan desain gating besi tuang diperlukan tahapan sebagai berikut :
a.Menghitung waktu tuang optimal dari setiap produk cor yang bersangkutan
b.Desain gating system menentukan layout ingate, runner dan sprue
c.menentukan luas potongan melintang dari ingate, runner, sprue di m ulai dari perhitungan koefesien choke
d.menghitung total berat tuangan, total waktu dan yield ratio.